Perpetual benchmark thread... - Page 4

RickC · 2004-11-13, 19:36

Dell Dimension 8400
Prescott P4 530 3Ghz with HT enabled
800Mhz FSB
1GB DDR2 533Mhz SDRAM
Memory timings 4-4-4-11

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 2992.62 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: unknown
L2 cache size: 1024 KB
L1 cache line size: unknown
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 13.496 ms.
Best time for 448K FFT length: 16.435 ms.
Best time for 512K FFT length: 18.520 ms.
Best time for 640K FFT length: 22.103 ms.
Best time for 768K FFT length: 26.495 ms.
Best time for 896K FFT length: 32.001 ms.
Best time for 1024K FFT length: 35.678 ms.
Best time for 1280K FFT length: 47.433 ms.
Best time for 1536K FFT length: 56.837 ms.
Best time for 1792K FFT length: 68.142 ms.
Best time for 2048K FFT length: 75.934 ms.

Xyzzy · 2004-11-17, 01:04

Dell Dimension 3000
2.8GHz Prescott with 1MB L2 cache
2x256MB dual channel PC3200 @ PC2700 (533MHz FSB) CAS 2.5-3-3-7
No HT, PAT enabled
Onboard integrated graphics (I added a PCI video card but the times were the same!)

Intel(R) Pentium(R) 4 CPU 2.80GHz
CPU speed: 2792.91 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: unknown
L2 cache size: 1024 KB
L1 cache line size: unknown
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 14.153 ms.
Best time for 448K FFT length: 17.207 ms.
Best time for 512K FFT length: 19.421 ms.
Best time for 640K FFT length: 22.937 ms.
Best time for 768K FFT length: 27.816 ms.
Best time for 896K FFT length: 33.254 ms.
Best time for 1024K FFT length: 37.036 ms.
Best time for 1280K FFT length: 49.127 ms.
Best time for 1536K FFT length: 59.320 ms.
Best time for 1792K FFT length: 70.765 ms.
Best time for 2048K FFT length: 79.966 ms.
Best time for 2560K FFT length: 101.899 ms.
Best time for 3072K FFT length: 127.414 ms.
Best time for 3584K FFT length: 151.838 ms.
Best time for 4096K FFT length: 169.765 ms.

Pconfig · 2004-12-05, 09:51

Precott 550 CPU on LGA775
1024mb DDR2 ram
225*17 = 3825 MHz

Intel(R) Pentium(R) 4 CPU 3.40GHz
CPU speed: 3825.20 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: unknown
L2 cache size: 1024 KB
L1 cache line size: unknown
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 10.609 ms.
Best time for 448K FFT length: 12.911 ms.
Best time for 512K FFT length: 14.638 ms.
Best time for 640K FFT length: 17.431 ms.
Best time for 768K FFT length: 20.925 ms.
Best time for 896K FFT length: 25.299 ms.
Best time for 1024K FFT length: 28.172 ms.
Best time for 1280K FFT length: 37.391 ms.
Best time for 1536K FFT length: 44.654 ms.
Best time for 1792K FFT length: 53.613 ms.
Best time for 2048K FFT length: 59.840 ms.

call_apple · 2004-12-08, 23:18

Cpu One
======================================================
Old:
AMD Athlon(TM) MP 2200+
CPU speed: 1800.15 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 version 23.3, RdtscTiming=1
Best time for 384K FFT length: 41.519 ms.
Best time for 448K FFT length: 47.322 ms.
Best time for 512K FFT length: 52.143 ms.
Best time for 640K FFT length: 66.722 ms.
Best time for 768K FFT length: 81.191 ms.
Best time for 896K FFT length: 94.903 ms.
Best time for 1024K FFT length: 109.538 ms.
Best time for 1280K FFT length: 143.869 ms.
Best time for 1536K FFT length: 173.316 ms.
Best time for 1792K FFT length: 207.672 ms.
Best time for 2048K FFT length: 233.781 ms.

New:
AMD Athlon(TM) MP 2200+
CPU speed: 1800.17 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 39.208 ms.
Best time for 640K FFT length: 52.837 ms.
Best time for 768K FFT length: 64.023 ms.
Best time for 896K FFT length: 77.936 ms.
Best time for 1024K FFT length: 86.933 ms.
Best time for 1280K FFT length: 121.610 ms.
Best time for 1536K FFT length: 144.434 ms.
Best time for 1792K FFT length: 173.274 ms.
Best time for 2048K FFT length: 195.461 ms.

Cpu Two
==========================================================

Old:
AMD Athlon(TM) MP 2200+
CPU speed: 1800.17 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 42.440 ms.
Best time for 448K FFT length: 49.725 ms.
Best time for 512K FFT length: 55.982 ms.
Best time for 640K FFT length: 69.025 ms.
Best time for 768K FFT length: 86.266 ms.
Best time for 896K FFT length: 102.657 ms.
Best time for 1024K FFT length: 118.855 ms.
Best time for 1280K FFT length: 161.338 ms.
Best time for 1536K FFT length: 187.211 ms.
Best time for 1792K FFT length: 234.243 ms.
Best time for 2048K FFT length: 272.827 ms.

New:

AMD Athlon(TM) MP 2200+
CPU speed: 1799.98 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 37.970 ms.
Best time for 640K FFT length: 51.516 ms.
Best time for 768K FFT length: 65.473 ms.
Best time for 896K FFT length: 76.852 ms.
Best time for 1024K FFT length: 84.473 ms.
Best time for 1280K FFT length: 121.307 ms.
Best time for 1536K FFT length: 148.918 ms.
Best time for 1792K FFT length: 170.046 ms.
Best time for 2048K FFT length: 196.279 ms.

Arthanis · 2004-12-13, 22:44

AMD Athlon(tm) XP 2800+
CPU speed: 2104.25 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 32.000 ms.
Best time for 448K FFT length: 37.268 ms.
Best time for 512K FFT length: 39.828 ms.
Best time for 640K FFT length: 52.321 ms.
Best time for 768K FFT length: 62.694 ms.
Best time for 896K FFT length: 74.428 ms.
Best time for 1024K FFT length: 83.805 ms.
Best time for 1280K FFT length: 112.444 ms.
Best time for 1536K FFT length: 130.893 ms.
Best time for 1792K FFT length: 162.407 ms.
Best time for 2048K FFT length: 175.045 ms.
[Sat Dec 11 19:57:26 2004]

Sorry for ask, isnt mine too low for a Athlon XP barton 2800 +? I f it is, what can I do to improve it?

db597 · 2004-12-14, 02:31

Results for P4 560 LGA775 cpu overclocked to 3.5GHz (using dual channel DDR2 533MHz memory). CPU is the Prescott D0 stepping. Operating system used is Linux Fedora Core 3 on the v2.6.9 SMP kernel.

The cpu is totally stable, and I can even overclock to 3.6+GHz. But when running Prime95, the temperature soon nears 80 degrees.... something I'm not too comfortable with. Once over the 3.5GHz mark, temperature increases exponentially. I've capped the overclock to 3.5GHz - temp is just a tad under 70 degrees using stock cooling.

-----------------------------------------

Intel(R) Pentium(R) 4 CPU 3.20GHz
CPU speed: 3498.11 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: unknown
L2 cache size: 1024 KB
L1 cache line size: unknown
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.5, RdtscTiming=1
Best time for 384K FFT length: 11.793 ms.
Best time for 448K FFT length: 14.393 ms.
Best time for 512K FFT length: 16.170 ms.
Best time for 640K FFT length: 19.264 ms.
Best time for 768K FFT length: 23.014 ms.
Best time for 896K FFT length: 27.900 ms.
Best time for 1024K FFT length: 31.025 ms.
Best time for 1280K FFT length: 41.291 ms.
Best time for 1536K FFT length: 49.396 ms.
Best time for 1792K FFT length: 59.506 ms.
Best time for 2048K FFT length: 66.311 ms.
Best time for 2560K FFT length: 86.558 ms.
Best time for 3072K FFT length: 106.501 ms.
Best time for 3584K FFT length: 127.698 ms.
Best time for 4096K FFT length: 141.639 ms.

db597 · 2004-12-14, 02:43

Quote:

Originally Posted by Arthanis

Sorry for ask, isnt mine too low for a Athlon XP barton 2800 +? I f it is, what can I do to improve it?

Go download the new 24.6 version of Prime95 (you are using v23.8). It should give you almost a 20% speed up! :)

Arthanis · 2004-12-14, 08:51

Oh, thank you, I will try that

Arthanis · 2004-12-14, 09:00

Wherer do I find it? It isnt in theDownload section...

ET_ · 2004-12-14, 09:17

http://www.mersenne.org/gimps/p95v246.zip

Luigi

E_tron · 2004-12-16, 00:14

Whoa, there's a new version? That helps Athlons?!!! I stopped checking like a year ago.

Uncwilly · 2004-12-16, 00:20

Quote:

Originally Posted by E_tron

Whoa, there's a new version? That helps Athlons?!!! I stopped checking like a year ago.

It is a beta. "No yet ready for prime time" so to speak. A few problems have been found. At least 1 fixed. Another is being checked on. A tweak is need to keep it from slowing down the P-III's. And we need to turn in a few DC's to check on it.

Uncwilly · 2004-12-19, 05:59

For the fun of it I ran benches on the same machine with v22.1 (what I started with on this machine) in my normal config and v24.6 in safe mode.

First the old V22.1

Code:

AMD Athlon(tm) processor
CPU speed: 1128.29 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 24
L2 TLBS: 256
Prime95 version 22.10, RdtscTiming=1
Best time for 256K FFT length: 50.613 ms.
Best time for 320K FFT length: 64.620 ms.
Best time for 384K FFT length: 82.011 ms.
Best time for 448K FFT length: 92.731 ms.
Best time for 512K FFT length: 102.519 ms.
Best time for 640K FFT length: 129.162 ms.
Best time for 768K FFT length: 158.742 ms.
Best time for 896K FFT length: 183.559 ms.
Best time for 1024K FFT length: 211.919 ms.
Best time for 1280K FFT length: 279.228 ms.
Best time for 1536K FFT length: 335.572 ms.
Best time for 1792K FFT length: 402.351 ms.

Now the new V24.6 in safe mode

Code:

AMD Athlon(tm) processor
CPU speed: 1128.92 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 24
L2 TLBS: 256
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 58.654 ms.
Best time for 640K FFT length: 81.064 ms.
Best time for 768K FFT length: 99.040 ms.
Best time for 896K FFT length: 121.605 ms.
Best time for 1024K FFT length: 135.980 ms.
Best time for 1280K FFT length: 177.290 ms.
Best time for 1536K FFT length: 209.383 ms.
Best time for 1792K FFT length: 254.494 ms.
Best time for 2048K FFT length: 282.304 ms.

Comparison

Code:

FFT	V22.1	V24.6 sm	% change
 512	102.5	 58.6		43
 640	129.2	 81.1		37
 768	158.7	 99.0		38
 896	183.6	121.6		34
1024	211.9	136.0		36
1280	279.2	177.3		36
1536	335.6	209.4		38
1792	402.4	254.5		37
			Avg.	37

Danath · 2004-12-25, 16:02

Celeron (Northwood) 2.4GHz @ 2.8GHz, chipset i865G (video-on-board), DDR 400MHz @ 311MHz

Intel(R) Celeron(R) CPU 2.40GHz
CPU speed: 2806.21 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 128 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.7, RdtscTiming=1
Best time for 384K FFT length: 19.329 ms.
Best time for 448K FFT length: 24.803 ms.
Best time for 512K FFT length: 32.872 ms.
Best time for 640K FFT length: 33.125 ms.
Best time for 768K FFT length: 40.236 ms.
Best time for 896K FFT length: 48.984 ms.
Best time for 1024K FFT length: 55.322 ms.
Best time for 1280K FFT length: 80.108 ms.
Best time for 1536K FFT length: 99.579 ms.
Best time for 1792K FFT length: 137.465 ms.
Best time for 2048K FFT length: 162.117 ms.

Intel(R) Celeron(R) CPU 2.40GHz
CPU speed: 2806.18 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 128 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 31.994 ms.
Best time for 640K FFT length: 31.768 ms.
Best time for 768K FFT length: 41.484 ms.
Best time for 896K FFT length: 46.763 ms.
Best time for 1024K FFT length: 52.918 ms.
Best time for 1280K FFT length: 80.034 ms.
Best time for 1536K FFT length: 101.632 ms.
Best time for 1792K FFT length: 134.529 ms.
Best time for 2048K FFT length: 161.108 ms.

kaeptn_kork · 2004-12-28, 16:16

Asus P4P800, RAM 192 MHz 2-2-2-5 DC

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 3600.77 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 9.890 ms.
Best time for 448K FFT length: 11.761 ms.
Best time for 512K FFT length: 13.348 ms.
Best time for 640K FFT length: 16.041 ms.
Best time for 768K FFT length: 19.508 ms.
Best time for 896K FFT length: 23.160 ms.
Best time for 1024K FFT length: 25.942 ms.
Best time for 1280K FFT length: 34.017 ms.
Best time for 1536K FFT length: 41.864 ms.
Best time for 1792K FFT length: 49.859 ms.
Best time for 2048K FFT length: 56.399 ms.

new version slightly slower on my machine:

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 3600.85 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 13.409 ms.
Best time for 640K FFT length: 16.000 ms.
Best time for 768K FFT length: 19.889 ms.
Best time for 896K FFT length: 23.393 ms.
Best time for 1024K FFT length: 26.156 ms.
Best time for 1280K FFT length: 34.041 ms.
Best time for 1536K FFT length: 42.975 ms.
Best time for 1792K FFT length: 50.143 ms.
Best time for 2048K FFT length: 56.739 ms.

patrik · 2005-02-19, 17:30

Following the discussion in this thread (about running one or two instances of Prime95) I did some benchmarks. The interesting ones are from my new 3.2 GHz Prescott. I also downclocked an overclocked Northwood 3.0 GHz to about 3.2 GHz for easy comparison.

The very interensting result is that for a hyperthreaded Prescott you get an overall performance gain by running two instances of Prime95, even when doing two Lucas-Lehmer tests. Furthermore, the benchmark then almost matches the Northwood.

The benchmarks below are the best times for three or four benchmarks.

1. Benchmark while DoubleCheck=13201703,64,1 running in the background.

Intel(R) Pentium(R) 4 CPU 3.20GHz
CPU speed: 3206.73 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.9, RdtscTiming=1
Best time for 384K FFT length: 22.869 ms.
Best time for 448K FFT length: 27.621 ms.
Best time for 512K FFT length: 30.467 ms.
Best time for 640K FFT length: 37.389 ms.
Best time for 768K FFT length: 45.457 ms.
Best time for 896K FFT length: 54.429 ms.
Best time for 1024K FFT length: 60.250 ms.
Best time for 1280K FFT length: 79.546 ms.
Best time for 1536K FFT length: 97.146 ms.
Best time for 1792K FFT length: 117.733 ms.
Best time for 2048K FFT length: 131.689 ms.
Best time for 2560K FFT length: 166.244 ms.
Best time for 3072K FFT length: 204.503 ms.
Best time for 3584K FFT length: 247.794 ms.
Best time for 4096K FFT length: 278.716 ms.

2. Benchmark while Test=27013621,67,1 running in the background.

Intel(R) Pentium(R) 4 CPU 3.20GHz
CPU speed: 3207.83 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.9, RdtscTiming=1
Best time for 384K FFT length: 22.850 ms.
Best time for 448K FFT length: 27.544 ms.
Best time for 512K FFT length: 30.459 ms.
Best time for 640K FFT length: 37.607 ms.
Best time for 768K FFT length: 45.587 ms.
Best time for 896K FFT length: 54.744 ms.
Best time for 1024K FFT length: 60.321 ms.
Best time for 1280K FFT length: 80.209 ms.
Best time for 1536K FFT length: 98.357 ms.
Best time for 1792K FFT length: 118.863 ms.
Best time for 2048K FFT length: 133.361 ms.
Best time for 2560K FFT length: 168.011 ms.
Best time for 3072K FFT length: 208.208 ms.
Best time for 3584K FFT length: 253.071 ms.
Best time for 4096K FFT length: 285.369 ms.

3. Benchmark when only one mprime client running.

Intel(R) Pentium(R) 4 CPU 3.20GHz
CPU speed: 3207.83 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.9, RdtscTiming=1
Best time for 384K FFT length: 12.799 ms.
Best time for 448K FFT length: 15.582 ms.
Best time for 512K FFT length: 17.519 ms.
Best time for 640K FFT length: 20.947 ms.
Best time for 768K FFT length: 25.195 ms.
Best time for 896K FFT length: 30.331 ms.
Best time for 1024K FFT length: 33.974 ms.
Best time for 1280K FFT length: 45.011 ms.
Best time for 1536K FFT length: 54.056 ms.
Best time for 1792K FFT length: 65.079 ms.
Best time for 2048K FFT length: 72.909 ms.
Best time for 2560K FFT length: 93.961 ms.
Best time for 3072K FFT length: 115.239 ms.
Best time for 3584K FFT length: 138.523 ms.
Best time for 4096K FFT length: 153.291 ms.

4. Reference Northwood benchmark (no speed improvement was made from v23.5 to v23.9 AFAIK)

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 3208.66 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.5, RdtscTiming=1
Best time for 384K FFT length: 11.321 ms.
Best time for 448K FFT length: 13.444 ms.
Best time for 512K FFT length: 15.293 ms.
Best time for 640K FFT length: 18.250 ms.
Best time for 768K FFT length: 22.253 ms.
Best time for 896K FFT length: 26.336 ms.
Best time for 1024K FFT length: 29.525 ms.
Best time for 1280K FFT length: 38.728 ms.
Best time for 1536K FFT length: 47.640 ms.
Best time for 1792K FFT length: 56.561 ms.
Best time for 2048K FFT length: 64.160 ms.
Best time for 2560K FFT length: 81.034 ms.
Best time for 3072K FFT length: 101.501 ms.
Best time for 3584K FFT length: 123.872 ms.
Best time for 4096K FFT length: 138.102 ms.

Hardware:
Pentium 4 3.20E GHz (Prescott core) 800 MHz system bus
ASUS P4P800S-X
Kingston KVR400X64C25/256 (single channel 400 MHz DDR)

Pentium 4 3.0 GHz (Northwood core) 800 MHz system bus
ASUS P4P800-E Deluxe
2xKingston KVR400X64C25/256 (dual channel 400 MHz DDR)
overclocked to 3.2 GHz (FSB214)

Edit: OS: Linux kernel 2.4.20-8smp, Red Hat Linux release 9 (Shrike)

ET_ · 2005-02-20, 12:25

Quote:

Originally Posted by patrik

Following the discussion in this thread (about running one or two instances of Prime95) I did some benchmarks. The interesting ones are from my new 3.2 GHz Prescott. I also downclocked an overclocked Northwood 3.0 GHz to about 3.2 GHz for easy comparison.

Did you try a comparison during factoring?

I've a 3.2 GHz Prescott where I run Prime95 and LLR.
I noticed a sudden slow of LLR as soon as I switched from double-check to factoring in Prime95.

The switching was motivated by another thread, where it was said that hyperthreading was useful if factoring and ll-testing were done together.

Luigi

geoff · 2005-02-20, 14:19

Quote:

Originally Posted by patrik

1. Benchmark while DoubleCheck=13201703,64,1 running in the background.

If you run two instances of mprime doing different tasks or even doing the same task using different FFT sizes, then one will take more of the total processor time than the other, so I don't think it will be possible to get an accurate benchmark this way. On one machine the mprime running the benchmark task might be faster just because the LL testing task is running slower.

Danath · 2005-02-20, 16:46

So it would be the best to run two regular LL tests simultaneously for some time (rather than one LL test and a benchmark), and then watch the average timings for this period of time (you need to set the "time between screen outputs" to some value, say 10-30 minutes).

Prime95 · 2005-02-20, 21:14

Quote:

Originally Posted by Danath

So it would be the best to run two regular LL tests simultaneously for some time (rather than one LL test and a benchmark).

I agree. The benchmark is not good because it returns the BEST time, where as a second LL test returns an AVERAGE time.

The danger with looking at the best time is that it can be easily skewed. If the OS swaps out the first LL test to run a thread that does some non-FPU work, then all of a sudden the benchmark gets a speed boost that will not be indicative of your average throughput in an LL test.

patrik · 2005-02-20, 21:33

Quote:

Originally Posted by ET_

Did you try a comparison during factoring?

I've a 3.2 GHz Prescott where I run Prime95 and LLR.
I noticed a sudden slow of LLR as soon as I switched from double-check to factoring in Prime95.

The switching was motivated by another thread, where it was said that hyperthreading was useful if factoring and ll-testing were done together.

Luigi

No, not for the Prescott, but I run 1 factoring + 1 LL-test on my two HT-capable Northwoods. It has been known for some time to give higher throughput than running them on separate computers.

The interesting point is that for Prescott two LL tests also give higher throughput. That is not the case for my Northwoods. My guess is that this applies to all Northwoods and Prescotts. Since most GIMPSters buy Northwoods we have believed that running two LL tests in parallel was always a bad thing. Just like I did until yesterday.

My timings seem to be roughly accurate for the 768K FFT length my LL-tests are running at for the moment. Then I get 0.026 s and 0.046 s iteration times for one or two clients running. (That's why I decided to do some benchmarks.) But one or two FFT levels might of course still be a bit off.

TauCeti · 2005-04-01, 06:05

Mainboard ECS-nForce4-A939, DDR-400:

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1809.08 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 29.930 ms.
Best time for 640K FFT length: 37.258 ms.
Best time for 768K FFT length: 45.091 ms.
Best time for 896K FFT length: 54.571 ms.
Best time for 1024K FFT length: 60.653 ms.
Best time for 1280K FFT length: 80.412 ms.
Best time for 1536K FFT length: 98.028 ms.
Best time for 1792K FFT length: 118.198 ms.
Best time for 2048K FFT length: 131.602 ms.
[Fri Apr 01 07:57:33 2005]

Results from 23.5 Version:

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1809.25 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 23.5, RdtscTiming=1
Best time for 384K FFT length: 23.853 ms.
Best time for 448K FFT length: 28.699 ms.
Best time for 512K FFT length: 32.122 ms.
Best time for 640K FFT length: 40.456 ms.
Best time for 768K FFT length: 49.149 ms.
Best time for 896K FFT length: 59.255 ms.
Best time for 1024K FFT length: 66.528 ms.
Best time for 1280K FFT length: 88.512 ms.
Best time for 1536K FFT length: 106.524 ms.
Best time for 1792K FFT length: 128.484 ms.
Best time for 2048K FFT length: 144.814 ms.

Jeff Gilchrist · 2005-04-01, 17:52

TauCeti, how does 24.6 compare as well in speed?

TauCeti · 2005-04-01, 18:29

I do only TF on my A64, so i never used 24.6 before. If you need more/other benchmarks, just drop a line...

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1809.32 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 23.796 ms.
Best time for 448K FFT length: 28.631 ms.
Best time for 512K FFT length: 31.960 ms.
Best time for 640K FFT length: 40.412 ms.
Best time for 768K FFT length: 48.982 ms.
Best time for 896K FFT length: 58.961 ms.
Best time for 1024K FFT length: 66.275 ms.
Best time for 1280K FFT length: 88.329 ms.
Best time for 1536K FFT length: 105.977 ms.
Best time for 1792K FFT length: 128.341 ms.
Best time for 2048K FFT length: 144.325 ms.

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1809.32 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 32.344 ms.
Best time for 640K FFT length: 40.449 ms.
Best time for 768K FFT length: 49.196 ms.
Best time for 896K FFT length: 59.287 ms.
Best time for 1024K FFT length: 66.484 ms.
Best time for 1280K FFT length: 88.567 ms.
Best time for 1536K FFT length: 106.343 ms.
Best time for 1792K FFT length: 128.518 ms.
Best time for 2048K FFT length: 144.893 ms.
[Fri Apr 01 20:05:29 2005]

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1809.14 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 33.003 ms.
Best time for 640K FFT length: 44.065 ms.
Best time for 768K FFT length: 53.294 ms.
Best time for 896K FFT length: 64.741 ms.
Best time for 1024K FFT length: 72.098 ms.
Best time for 1280K FFT length: 94.982 ms.
Best time for 1536K FFT length: 113.497 ms.
Best time for 1792K FFT length: 136.471 ms.
Best time for 2048K FFT length: 151.474 ms.

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1808.97 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 29.906 ms.
Best time for 640K FFT length: 37.193 ms.
Best time for 768K FFT length: 45.105 ms.
Best time for 896K FFT length: 54.600 ms.
Best time for 1024K FFT length: 60.659 ms.
Best time for 1280K FFT length: 80.405 ms.
Best time for 1536K FFT length: 98.117 ms.
Best time for 1792K FFT length: 118.071 ms.
Best time for 2048K FFT length: 131.648 ms.

Dresdenboy · 2005-04-04, 20:13

I have an A64 3000+ (2Ghz, 512kB L2, single channel RAM) with C0 stepping (unfortunately not the new E0-Stepping - several percent faster than 130nm steppings thanks to the core improvements).

Now the numbers:

Prime95 version 23.8

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 2002.45 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 23.219 ms.
Best time for 448K FFT length: 27.941 ms.
Best time for 512K FFT length: 31.232 ms.
Best time for 640K FFT length: 39.588 ms.
Best time for 768K FFT length: 48.090 ms.
Best time for 896K FFT length: 58.028 ms.
Best time for 1024K FFT length: 65.605 ms.
Best time for 1280K FFT length: 87.466 ms.
Best time for 1536K FFT length: 104.623 ms.
Best time for 1792K FFT length: 127.425 ms.
Best time for 2048K FFT length: 143.992 ms.

Prime95 version 24.6:

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 2002.55 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 31.568 ms.
Best time for 640K FFT length: 39.566 ms.
Best time for 768K FFT length: 48.178 ms.
Best time for 896K FFT length: 58.333 ms.
Best time for 1024K FFT length: 65.933 ms.
Best time for 1280K FFT length: 87.748 ms.
Best time for 1536K FFT length: 105.167 ms.
Best time for 1792K FFT length: 127.511 ms.
Best time for 2048K FFT length: 144.549 ms.

Prime95 version 24.11 (32 bit):

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 2002.89 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 28.314 ms.
Best time for 640K FFT length: 33.947 ms.
Best time for 768K FFT length: 40.932 ms.
Best time for 896K FFT length: 49.756 ms.
Best time for 1024K FFT length: 55.855 ms.
Best time for 1280K FFT length: 73.371 ms.
Best time for 1536K FFT length: 90.066 ms.
Best time for 1792K FFT length: 108.263 ms.
Best time for 2048K FFT length: 121.138 ms.
Best time for 58 bit trial factors: 6.010 ms.
Best time for 59 bit trial factors: 6.032 ms.
Best time for 60 bit trial factors: 6.003 ms.
Best time for 61 bit trial factors: 6.029 ms.
Best time for 62 bit trial factors: 10.961 ms.
Best time for 63 bit trial factors: 10.963 ms.
Best time for 64 bit trial factors: 13.932 ms.
Best time for 65 bit trial factors: 13.836 ms.
Best time for 66 bit trial factors: 13.849 ms.
Best time for 67 bit trial factors: 13.831 ms.

Prime95 version 24.11 (32 bit - no prefetching):

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 2002.59 MHz
CPU features: RDTSC, CMOV, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 28.202 ms.
Best time for 640K FFT length: 33.791 ms.
Best time for 768K FFT length: 40.883 ms.
Best time for 896K FFT length: 49.690 ms.
Best time for 1024K FFT length: 55.278 ms.
Best time for 1280K FFT length: 73.254 ms.
Best time for 1536K FFT length: 89.828 ms.
Best time for 1792K FFT length: 107.797 ms.
Best time for 2048K FFT length: 120.921 ms.
Best time for 58 bit trial factors: 6.025 ms.
Best time for 59 bit trial factors: 6.031 ms.
Best time for 60 bit trial factors: 6.022 ms.
Best time for 61 bit trial factors: 6.034 ms.
Best time for 62 bit trial factors: 10.988 ms.
Best time for 63 bit trial factors: 11.008 ms.
Best time for 64 bit trial factors: 13.936 ms.
Best time for 65 bit trial factors: 13.850 ms.
Best time for 66 bit trial factors: 13.884 ms.
Best time for 67 bit trial factors: 13.805 ms.

Prime95 version 24.11 (64 bit):

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 2002.99 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 28.344 ms.
Best time for 640K FFT length: 34.008 ms.
Best time for 768K FFT length: 41.064 ms.
Best time for 896K FFT length: 49.705 ms.
Best time for 1024K FFT length: 55.251 ms.
Best time for 1280K FFT length: 73.524 ms.
Best time for 1536K FFT length: 90.159 ms.
Best time for 1792K FFT length: 108.715 ms.
Best time for 2048K FFT length: 121.390 ms.
Best time for 58 bit trial factors: 3.786 ms.
Best time for 59 bit trial factors: 3.782 ms.
Best time for 60 bit trial factors: 4.032 ms.
Best time for 61 bit trial factors: 4.140 ms.
Best time for 62 bit trial factors: 4.843 ms.
Best time for 63 bit trial factors: 5.643 ms.
Best time for 64 bit trial factors: 6.816 ms.
Best time for 65 bit trial factors: 8.007 ms.
Best time for 66 bit trial factors: 7.951 ms.
Best time for 67 bit trial factors: 7.934 ms.

Dresdenboy · 2005-04-04, 20:29

And now the results at nearly the same clock as TauCeti's results (so it's a single channel C0 stepping vs. dual channel D0 stepping comparison):

Prime95 version 23.8:

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1802.17 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 25.667 ms.
Best time for 448K FFT length: 30.738 ms.
Best time for 512K FFT length: 34.357 ms.
Best time for 640K FFT length: 43.645 ms.
Best time for 768K FFT length: 53.144 ms.
Best time for 896K FFT length: 64.121 ms.
Best time for 1024K FFT length: 72.369 ms.
Best time for 1280K FFT length: 96.437 ms.
Best time for 1536K FFT length: 115.376 ms.
Best time for 1792K FFT length: 140.484 ms.
Best time for 2048K FFT length: 158.688 ms.

Prime95 version 24.6:

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1802.60 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.6, RdtscTiming=1
Best time for 512K FFT length: 34.759 ms.
Best time for 640K FFT length: 43.714 ms.
Best time for 768K FFT length: 53.068 ms.
Best time for 896K FFT length: 64.443 ms.
Best time for 1024K FFT length: 72.695 ms.
Best time for 1280K FFT length: 97.047 ms.
Best time for 1536K FFT length: 115.727 ms.
Best time for 1792K FFT length: 140.678 ms.
Best time for 2048K FFT length: 159.164 ms.

Prime95 version 24.11 (32 bit):

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1802.18 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 30.952 ms.
Best time for 640K FFT length: 37.624 ms.
Best time for 768K FFT length: 45.487 ms.
Best time for 896K FFT length: 55.276 ms.
Best time for 1024K FFT length: 61.360 ms.
Best time for 1280K FFT length: 81.566 ms.
Best time for 1536K FFT length: 99.931 ms.
Best time for 1792K FFT length: 119.917 ms.
Best time for 2048K FFT length: 134.330 ms.

(I didn't repeat the 64bit test at 1.8 GHz and also removed the TF results)

db597 · 2005-04-29, 15:18

My benchmarks for primality tests show between 2% to 2.5% improvement in speed over v23.8. I've omitted trial factoring results - for speed reasons, these should obviously be done on an Athlon64 instead.

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 3606.52 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2
L1 cache size: unknown
L2 cache size: 1024 KB
L1 cache line size: unknown
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 11.277 ms.
Best time for 448K FFT length: 13.754 ms.
Best time for 512K FFT length: 15.516 ms.
Best time for 640K FFT length: 18.498 ms.
Best time for 768K FFT length: 22.251 ms.
Best time for 896K FFT length: 26.829 ms.
Best time for 1024K FFT length: 29.903 ms.
Best time for 1280K FFT length: 39.753 ms.
Best time for 1536K FFT length: 47.627 ms.
Best time for 1792K FFT length: 57.110 ms.
Best time for 2048K FFT length: 63.914 ms.

------------------------------------------------------------------

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 3606.36 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 15.204 ms.
Best time for 640K FFT length: 17.987 ms.
Best time for 768K FFT length: 21.828 ms.
Best time for 896K FFT length: 26.251 ms.
Best time for 1024K FFT length: 29.212 ms.
Best time for 1280K FFT length: 38.418 ms.
Best time for 1536K FFT length: 46.333 ms.
Best time for 1792K FFT length: 55.928 ms.
Best time for 2048K FFT length: 62.366 ms.

Peter Nelson · 2005-05-02, 03:28

I was able to benchmark prime95 on one of Intel's new processors.
Interesting to compare with standard Northwood/Prescott 3GHz processors.

Not massively fast, dual channel memory would help it, but at least it runs ok. There are big potential speedups if a 64 bit client can be made to work on this processor but a 64 bit OS would be required. Note the L2 cache is 2MB.

[INTEL 630 @ native 3GHz]
Primenet client version 24.11.2
HP/Compaq machine running SINGLE channel 512MB memory using XP HOME.

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 3000.78 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 2048 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 18.358 ms.
Best time for 640K FFT length: 21.796 ms.
Best time for 768K FFT length: 26.365 ms.
Best time for 896K FFT length: 31.650 ms.
Best time for 1024K FFT length: 35.298 ms.
Best time for 1280K FFT length: 46.438 ms.
Best time for 1536K FFT length: 55.953 ms.
Best time for 1792K FFT length: 67.795 ms.
Best time for 2048K FFT length: 75.294 ms.
Best time for 58 bit trial factors: 9.258 ms.
Best time for 59 bit trial factors: 9.919 ms.
Best time for 60 bit trial factors: 9.899 ms.
Best time for 61 bit trial factors: 9.947 ms.
Best time for 62 bit trial factors: 13.751 ms.
Best time for 63 bit trial factors: 13.761 ms.
Best time for 64 bit trial factors: 15.693 ms.
Best time for 65 bit trial factors: 15.589 ms.
Best time for 66 bit trial factors: 15.661 ms.
Best time for 67 bit trial factors: 15.525 ms.

dans · 2005-05-21, 06:07

Using the x64 version of 24.11 I benchmarked a cheap-o Frys (ECS motherboard, AMD Athlon x64 3000 combo) with 512mb SDRAM, using the release version of Microsofts Windows XP 2003 x64 SP1. Here are the three sequential benchmarks:

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1998.94 MHz
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 28.234 ms.
Best time for 640K FFT length: 34.057 ms.
Best time for 768K FFT length: 40.837 ms.
Best time for 896K FFT length: 49.316 ms.
Best time for 1024K FFT length: 55.013 ms.
Best time for 1280K FFT length: 73.149 ms.
Best time for 1536K FFT length: 90.600 ms.
Best time for 1792K FFT length: 108.582 ms.
Best time for 2048K FFT length: 121.559 ms.

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1998.94 MHz
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 28.384 ms.
Best time for 640K FFT length: 34.024 ms.
Best time for 768K FFT length: 40.827 ms.
Best time for 896K FFT length: 49.260 ms.
Best time for 1024K FFT length: 55.037 ms.
Best time for 1280K FFT length: 73.128 ms.
Best time for 1536K FFT length: 90.858 ms.
Best time for 1792K FFT length: 108.570 ms.
Best time for 2048K FFT length: 121.433 ms.

AMD Athlon(tm) 64 Processor 3000+
CPU speed: 1998.94 MHz
Prime95 version 24.11, RdtscTiming=1
Best time for 512K FFT length: 28.387 ms.
Best time for 640K FFT length: 34.020 ms.
Best time for 768K FFT length: 40.843 ms.
Best time for 896K FFT length: 49.293 ms.
Best time for 1024K FFT length: 55.024 ms.
Best time for 1280K FFT length: 73.018 ms.
Best time for 1536K FFT length: 90.954 ms.
Best time for 1792K FFT length: 108.646 ms.
Best time for 2048K FFT length: 121.696 ms.

nomadicus · 2005-07-13, 04:26

AMD X2 4400+ dual-core, DFI mobo, OCZ memory

CPU0 - Benchmark
CPU1 - Idle

Code:

[Tue Jul 12 21:00:53 2005]
AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
CPU speed: 2210.14 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 21.049 ms.
Best time for 640K FFT length: 27.487 ms.
Best time for 768K FFT length: 33.360 ms.
Best time for 896K FFT length: 39.836 ms.
Best time for 1024K FFT length: 44.425 ms.
Best time for 1280K FFT length: 56.564 ms.
Best time for 1536K FFT length: 69.115 ms.
Best time for 1792K FFT length: 83.712 ms.
Best time for 2048K FFT length: 93.139 ms.
Best time for 2560K FFT length: 122.299 ms.
Best time for 3072K FFT length: 149.325 ms.
Best time for 3584K FFT length: 180.292 ms.
Best time for 4096K FFT length: 200.947 ms.
Best time for 58 bit trial factors: 5.387 ms.
Best time for 59 bit trial factors: 5.402 ms.
Best time for 60 bit trial factors: 5.381 ms.
Best time for 61 bit trial factors: 5.402 ms.
Best time for 62 bit trial factors: 9.684 ms.
Best time for 63 bit trial factors: 9.718 ms.
Best time for 64 bit trial factors: 12.549 ms.
Best time for 65 bit trial factors: 12.460 ms.
Best time for 66 bit trial factors: 12.471 ms.
Best time for 67 bit trial factors: 12.426 ms.

CPU0 - Benchmark
CPU1 - Torture test: Custom, 1024FFT, 512MB

Code:

AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
CPU speed: 2210.14 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 21.042 ms.
Best time for 640K FFT length: 27.546 ms.
Best time for 768K FFT length: 33.439 ms.
Best time for 896K FFT length: 39.926 ms.
Best time for 1024K FFT length: 44.548 ms.
Best time for 1280K FFT length: 56.819 ms.
Best time for 1536K FFT length: 69.385 ms.
Best time for 1792K FFT length: 83.998 ms.
Best time for 2048K FFT length: 93.520 ms.
Best time for 2560K FFT length: 122.645 ms.
Best time for 3072K FFT length: 149.550 ms.
Best time for 3584K FFT length: 180.499 ms.
Best time for 4096K FFT length: 201.461 ms.
Best time for 58 bit trial factors: 5.387 ms.
Best time for 59 bit trial factors: 5.402 ms.
Best time for 60 bit trial factors: 5.379 ms.
Best time for 61 bit trial factors: 5.407 ms.
Best time for 62 bit trial factors: 9.674 ms.
Best time for 63 bit trial factors: 9.712 ms.
Best time for 64 bit trial factors: 12.549 ms.
Best time for 65 bit trial factors: 12.452 ms.
Best time for 66 bit trial factors: 12.471 ms.
Best time for 67 bit trial factors: 12.417 ms.

CPU0 - Idle
CPU1 - Benchmark

Code:

[Tue Jul 12 21:02:35 2005]
AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
CPU speed: 2210.14 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 21.061 ms.
Best time for 640K FFT length: 27.479 ms.
Best time for 768K FFT length: 33.349 ms.
Best time for 896K FFT length: 39.856 ms.
Best time for 1024K FFT length: 44.431 ms.
Best time for 1280K FFT length: 56.533 ms.
Best time for 1536K FFT length: 69.104 ms.
Best time for 1792K FFT length: 83.691 ms.
Best time for 2048K FFT length: 93.151 ms.
Best time for 2560K FFT length: 122.160 ms.
Best time for 3072K FFT length: 149.143 ms.
Best time for 3584K FFT length: 180.023 ms.
Best time for 4096K FFT length: 200.761 ms.
Best time for 58 bit trial factors: 5.389 ms.
Best time for 59 bit trial factors: 5.400 ms.
Best time for 60 bit trial factors: 5.378 ms.
Best time for 61 bit trial factors: 5.405 ms.
Best time for 62 bit trial factors: 9.684 ms.
Best time for 63 bit trial factors: 9.712 ms.
Best time for 64 bit trial factors: 12.540 ms.
Best time for 65 bit trial factors: 12.454 ms.
Best time for 66 bit trial factors: 12.464 ms.
Best time for 67 bit trial factors: 12.417 ms.

CPU0 - Torture test: Custom, 1024FFT, 512MB
CPU1 - Benchmark results

Code:

AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
CPU speed: 2210.15 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 21.031 ms.
Best time for 640K FFT length: 27.525 ms.
Best time for 768K FFT length: 33.428 ms.
Best time for 896K FFT length: 39.945 ms.
Best time for 1024K FFT length: 44.504 ms.
Best time for 1280K FFT length: 56.806 ms.
Best time for 1536K FFT length: 69.468 ms.
Best time for 1792K FFT length: 84.002 ms.
Best time for 2048K FFT length: 93.488 ms.
Best time for 2560K FFT length: 122.551 ms.
Best time for 3072K FFT length: 149.565 ms.
Best time for 3584K FFT length: 180.501 ms.
Best time for 4096K FFT length: 201.201 ms.
Best time for 58 bit trial factors: 5.403 ms.
Best time for 59 bit trial factors: 5.401 ms.
Best time for 60 bit trial factors: 5.383 ms.
Best time for 61 bit trial factors: 5.405 ms.
Best time for 62 bit trial factors: 9.695 ms.
Best time for 63 bit trial factors: 9.716 ms.
Best time for 64 bit trial factors: 12.538 ms.
Best time for 65 bit trial factors: 12.493 ms.
Best time for 66 bit trial factors: 12.464 ms.
Best time for 67 bit trial factors: 12.421 ms.

HTT looks like it has eliminated almost all memory contention.
Nice coding George!

wfgarnett3 · 2005-07-13, 23:40

Can you have both "CPUs" run their own respective benchmarks simultaneously, and then post the results? Do 2 dual cores almost behave like 2 separate PCs (i.e. twice as much done)? Anyone have a dual core P4 do test on?

Dresdenboy · 2005-07-14, 06:43

Quote:

Originally Posted by nomadicus

HTT looks like it has eliminated almost all memory contention.
Nice coding George!

Did you mean the Hypertransport link? If so, then your statement is not correct, because the link between the 2 cores is avoiding the HT controller. Communication happens via the SRQ ("System Request Queue"), which is the next thing after the L2 for both cores. IIRC bandwidth is 64bit@cpu clock in both directions (Hypertransport is 16bit@DDR2000 in both directions) and latency is also lower.

Quote:

Originally Posted by wfgarnett3

Can you have both "CPUs" run their own respective benchmarks simultaneously, and then post the results? Do 2 dual cores almost behave like 2 separate PCs (i.e. twice as much done)? Anyone have a dual core P4 do test on?

Some of the benchmarks done by nomadicus should already give you the desired numbers. I think, it doesn't matter, if the non-benched core runs a torture test with big FFTs or another benchmark, except if the second benchmark is running small FFTs while the other the big ones, which would corrupt the result.

What we see there is what I expected according to the architecture and the way, Prime95 works. Prime95 now needs low latency for memory accesses more than high bandwidth.

This can be seen in the development of the 24.xx versions on a Socket 754 (single channel) A64 vs. a Socket 939 (dual channel) A64. One observation is, that the improvements on S754 were greater than on S939 and the results came closer to the latter. This means, Prime95 became less dependent on memory bandwidth and maybe memory accesses at all (since George mainly optimized the use of the caches).

For results of 2 x Prime95 on a Smithfield, you could also take results of a dual Xeon system with 2 Prescotts and FSB800. If memory type and behaviour of the chipset are similar, the results should be too.

Mike · 2005-07-15, 05:45

Dell Latitude D610

Intel(R) Pentium(R) M processor 2.00GHz
CPU speed: 798.04 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: 2048 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 128
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 34.729 ms.
Best time for 640K FFT length: 45.092 ms.
Best time for 768K FFT length: 55.294 ms.
Best time for 896K FFT length: 66.351 ms.
Best time for 1024K FFT length: 76.485 ms.
Best time for 1280K FFT length: 93.653 ms.
Best time for 1536K FFT length: 114.354 ms.
Best time for 1792K FFT length: 137.284 ms.
Best time for 2048K FFT length: 154.242 ms.
Best time for 2560K FFT length: 197.927 ms.
Best time for 3072K FFT length: 241.244 ms.
Best time for 3584K FFT length: 288.680 ms.
Best time for 4096K FFT length: 323.769 ms.
Best time for 58 bit trial factors: 6.590 ms.
Best time for 59 bit trial factors: 6.617 ms.
Best time for 60 bit trial factors: 6.609 ms.
Best time for 61 bit trial factors: 6.599 ms.
Best time for 62 bit trial factors: 9.313 ms.
Best time for 63 bit trial factors: 9.359 ms.
Best time for 64 bit trial factors: 16.100 ms.
Best time for 65 bit trial factors: 15.991 ms.
Best time for 66 bit trial factors: 16.019 ms.
Best time for 67 bit trial factors: 15.981 ms.

Btw, it says it's running at about 800 MHz, but it's actually at 1.99 GHz (100% according to Windows). There's no hyperthreading either

wfgarnett3 · 2005-07-16, 05:52

Does anyone have a dual core P4? If so, can you please post some benchmarks similar to nomadicus above. I am curious that when running 2 instances of Prime95 on a dual core P4, how close do you get to getting "twice" as much done? Nomadicus benchmarks seem to show the dual core X2 from AMD gets real close. Finally, even though for single cores, the Pentium 4 is faster, which architecture (at same clock speeds) gets 2 tests done quicker, a dual core X2 or a dual core P4? Is P4 overall still ahead, or will a dual core X2 be the new CPU of choice?

lunna · 2005-07-16, 10:00

Pentium D 830 (dual-core 3.0 GHz, no hyperthreading)
ASUS P5WD2 Premium/WiFi-TV (Intel 955X chipset)
Kingston ValueRAM 2*1GB PC2-4300 ECC memory (DDR2-533 CL4)
Windows XP Professional SP2 (32-bit)

(The benchmarks in the same order as nomadicus to make comparisons. Also, benchmarks only run once so no "taking the best run".)

CPU0 - Benchmark
CPU1 - Idle

Code:

Intel(R) Pentium(R) D CPU 3.00GHz
CPU speed: 3010.65 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 15.576 ms.
Best time for 640K FFT length: 19.791 ms.
Best time for 768K FFT length: 24.072 ms.
Best time for 896K FFT length: 29.257 ms.
Best time for 1024K FFT length: 33.584 ms.
Best time for 1280K FFT length: 41.234 ms.
Best time for 1536K FFT length: 50.019 ms.
Best time for 1792K FFT length: 59.813 ms.
Best time for 2048K FFT length: 66.894 ms.
Best time for 2560K FFT length: 88.706 ms.
Best time for 3072K FFT length: 106.831 ms.
Best time for 3584K FFT length: 128.068 ms.
Best time for 4096K FFT length: 143.323 ms.
Best time for 58 bit trial factors: 9.224 ms.
Best time for 59 bit trial factors: 9.251 ms.
Best time for 60 bit trial factors: 9.165 ms.
Best time for 61 bit trial factors: 9.174 ms.
Best time for 62 bit trial factors: 12.597 ms.
Best time for 63 bit trial factors: 12.619 ms.
Best time for 64 bit trial factors: 14.757 ms.
Best time for 65 bit trial factors: 14.734 ms.
Best time for 66 bit trial factors: 14.706 ms.
Best time for 67 bit trial factors: 14.622 ms.

CPU0 - Benchmark
CPU1 - Torture test: Custom, 1024FFT, 512MB

Code:

Intel(R) Pentium(R) D CPU 3.00GHz
CPU speed: 3010.56 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 15.750 ms.
Best time for 640K FFT length: 20.044 ms.
Best time for 768K FFT length: 24.368 ms.
Best time for 896K FFT length: 29.629 ms.
Best time for 1024K FFT length: 34.155 ms.
Best time for 1280K FFT length: 41.928 ms.
Best time for 1536K FFT length: 50.902 ms.
Best time for 1792K FFT length: 60.814 ms.
Best time for 2048K FFT length: 67.936 ms.
Best time for 2560K FFT length: 89.980 ms.
Best time for 3072K FFT length: 108.772 ms.
Best time for 3584K FFT length: 130.326 ms.
Best time for 4096K FFT length: 146.301 ms.
Best time for 58 bit trial factors: 9.222 ms.
Best time for 59 bit trial factors: 9.208 ms.
Best time for 60 bit trial factors: 9.146 ms.
Best time for 61 bit trial factors: 9.201 ms.
Best time for 62 bit trial factors: 12.639 ms.
Best time for 63 bit trial factors: 12.623 ms.
Best time for 64 bit trial factors: 14.853 ms.
Best time for 65 bit trial factors: 14.795 ms.
Best time for 66 bit trial factors: 14.768 ms.
Best time for 67 bit trial factors: 14.704 ms.

CPU0 - Idle
CPU1 - Benchmark

Code:

Intel(R) Pentium(R) D CPU 3.00GHz
CPU speed: 3010.54 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 15.534 ms.
Best time for 640K FFT length: 19.746 ms.
Best time for 768K FFT length: 24.000 ms.
Best time for 896K FFT length: 29.139 ms.
Best time for 1024K FFT length: 33.482 ms.
Best time for 1280K FFT length: 41.112 ms.
Best time for 1536K FFT length: 49.799 ms.
Best time for 1792K FFT length: 59.478 ms.
Best time for 2048K FFT length: 66.362 ms.
Best time for 2560K FFT length: 88.267 ms.
Best time for 3072K FFT length: 106.235 ms.
Best time for 3584K FFT length: 127.332 ms.
Best time for 4096K FFT length: 142.559 ms.
Best time for 58 bit trial factors: 9.137 ms.
Best time for 59 bit trial factors: 9.166 ms.
Best time for 60 bit trial factors: 9.150 ms.
Best time for 61 bit trial factors: 9.158 ms.
Best time for 62 bit trial factors: 12.582 ms.
Best time for 63 bit trial factors: 12.583 ms.
Best time for 64 bit trial factors: 14.718 ms.
Best time for 65 bit trial factors: 14.657 ms.
Best time for 66 bit trial factors: 14.662 ms.
Best time for 67 bit trial factors: 14.593 ms.

CPU0 - Torture test: Custom, 1024FFT, 512MB
CPU1 - Benchmark results

Code:

Intel(R) Pentium(R) D CPU 3.00GHz
CPU speed: 3010.51 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 15.679 ms.
Best time for 640K FFT length: 19.797 ms.
Best time for 768K FFT length: 24.237 ms.
Best time for 896K FFT length: 29.451 ms.
Best time for 1024K FFT length: 33.796 ms.
Best time for 1280K FFT length: 41.628 ms.
Best time for 1536K FFT length: 50.561 ms.
Best time for 1792K FFT length: 60.404 ms.
Best time for 2048K FFT length: 67.470 ms.
Best time for 2560K FFT length: 89.416 ms.
Best time for 3072K FFT length: 107.962 ms.
Best time for 3584K FFT length: 129.294 ms.
Best time for 4096K FFT length: 144.779 ms.
Best time for 58 bit trial factors: 9.173 ms.
Best time for 59 bit trial factors: 9.169 ms.
Best time for 60 bit trial factors: 9.168 ms.
Best time for 61 bit trial factors: 9.191 ms.
Best time for 62 bit trial factors: 12.579 ms.
Best time for 63 bit trial factors: 12.570 ms.
Best time for 64 bit trial factors: 14.762 ms.
Best time for 65 bit trial factors: 14.714 ms.
Best time for 66 bit trial factors: 14.654 ms.
Best time for 67 bit trial factors: 14.651 ms.

When not doing these benchmarks I have it overclocked to 3.5 GHz and both cores do LL tests with the 2048K FFT size. The iteration times are in the 58-60 ms area for both cores.

Xyzzy: Do you still want "FullBench=1" in prime.ini when doing the benchmarks?

lunna · 2005-07-17, 12:41

Because dual-core machines are still new I made a screendump of what LL testing looks like. Upper left is core 0, lower right is core 1.

You can see the machine isn't used much by the consistant iteration times - it's still waiting for some hardware components before the real install is done.

Also, LL testing on core 0 is slightly slower which I believe is due to the Windows scheduler putting jobs on the first available processor, and since none is available, on the first one.

Dresdenboy · 2005-07-17, 16:48

Quote:

Originally Posted by lunna

Because dual-core machines are still new I made a screendump of what LL testing looks like. Upper left is core 0, lower right is core 1.

You can see the machine isn't used much by the consistant iteration times - it's still waiting for some hardware components before the real install is done.

Also, LL testing on core 0 is slightly slower which I believe is due to the Windows scheduler putting jobs on the first available processor, and since none is available, on the first one.

This difference of only 1 ms is something everybody could experience when running Prime95, closing it, and running it again on a single core (+/- HT) CPU.

markhl · 2005-09-21, 00:24

Comparing versions 23.8 and 24.14 on a PIII. I already posted a summary of this in the thread Best version for Pentium III?. Version 24.14 runs a bit faster esp. for smaller FFTs:

Intel(R) Pentium(R) III processor
CPU speed: 863.94 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 16 KB
L2 cache size: 256 KB
L1 cache line size: 32 bytes
L2 cache line size: 32 bytes
TLBS: 64
Prime95 version 23.8, RdtscTiming=1
Best time for 384K FFT length: 89.321 ms.
Best time for 448K FFT length: 105.162 ms.
Best time for 512K FFT length: 118.724 ms.
Best time for 640K FFT length: 155.014 ms.
Best time for 768K FFT length: 186.329 ms.
Best time for 896K FFT length: 220.750 ms.
Best time for 1024K FFT length: 251.107 ms.
Best time for 1280K FFT length: 332.890 ms.
Best time for 1536K FFT length: 391.854 ms.
Best time for 1792K FFT length: 489.075 ms.
Best time for 2048K FFT length: 536.903 ms.
[Thu Sep 15 10:46:23 2005]
Compare your results to other computers at http://www.mersenne.org/bench.htm
That web page also contains instructions on how your results can be included.

Intel(R) Pentium(R) III processor
CPU speed: 863.68 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE
L1 cache size: 16 KB
L2 cache size: 256 KB
L1 cache line size: 32 bytes
L2 cache line size: 32 bytes
TLBS: 64
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 105.534 ms.
Best time for 640K FFT length: 141.510 ms.
Best time for 768K FFT length: 172.151 ms.
Best time for 896K FFT length: 207.871 ms.
Best time for 1024K FFT length: 238.667 ms.
Best time for 1280K FFT length: 325.389 ms.
Best time for 1536K FFT length: 390.802 ms.
Best time for 1792K FFT length: 468.968 ms.
Best time for 2048K FFT length: 521.360 ms.
Best time for 2560K FFT length: 686.274 ms.
Best time for 3072K FFT length: 840.009 ms.
Best time for 3584K FFT length: 1011.680 ms.
Best time for 4096K FFT length: 1155.709 ms.
Best time for 58 bit trial factors: 16.110 ms.
Best time for 59 bit trial factors: 16.103 ms.
Best time for 60 bit trial factors: 16.059 ms.
Best time for 61 bit trial factors: 16.132 ms.
Best time for 62 bit trial factors: 30.487 ms.
Best time for 63 bit trial factors: 30.523 ms.
Best time for 64 bit trial factors: 68.564 ms.
Best time for 65 bit trial factors: 69.811 ms.
Best time for 66 bit trial factors: 70.682 ms.
Best time for 67 bit trial factors: 71.022 ms.

Xyzzy · 2005-09-24, 03:52

IBM Thinkpad X20... I have no idea why there are errors above the 4096K FFT... The first result is Prime95 and the second is Mprime...

Code:

Intel(R) Pentium(R) III processor
CPU speed: 597.44 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE
L1 cache size: 16 KB
L2 cache size: 256 KB
L1 cache line size: 32 bytes
L2 cache line size: 32 bytes
TLBS: 64
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 4K FFT length: 0.638 ms.
Best time for 5K FFT length: 0.927 ms.
Best time for 6K FFT length: 1.113 ms.
Best time for 7K FFT length: 1.365 ms.
Best time for 8K FFT length: 1.433 ms.
Best time for 10K FFT length: 2.005 ms.
Best time for 12K FFT length: 2.417 ms.
Best time for 14K FFT length: 2.938 ms.
Best time for 16K FFT length: 3.130 ms.
Best time for 20K FFT length: 4.332 ms.
Best time for 24K FFT length: 5.495 ms.
Best time for 28K FFT length: 6.984 ms.
Best time for 32K FFT length: 7.846 ms.
Best time for 40K FFT length: 10.096 ms.
Best time for 48K FFT length: 12.349 ms.
Best time for 56K FFT length: 15.317 ms.
Best time for 64K FFT length: 16.934 ms.
Best time for 80K FFT length: 23.217 ms.
Best time for 96K FFT length: 25.294 ms.
Best time for 112K FFT length: 30.300 ms.
Best time for 128K FFT length: 33.351 ms.
Best time for 160K FFT length: 44.469 ms.
Best time for 192K FFT length: 53.440 ms.
Best time for 224K FFT length: 64.894 ms.
Best time for 256K FFT length: 70.546 ms.
Best time for 320K FFT length: 92.765 ms.
Best time for 384K FFT length: 111.991 ms.
Best time for 448K FFT length: 135.164 ms.
Best time for 512K FFT length: 148.237 ms.
Best time for 640K FFT length: 200.921 ms.
Best time for 768K FFT length: 244.135 ms.
Best time for 896K FFT length: 301.245 ms.
Best time for 1024K FFT length: 342.908 ms.
Best time for 1280K FFT length: 442.164 ms.
Best time for 1536K FFT length: 535.957 ms.
Best time for 1792K FFT length: 640.236 ms.
Best time for 2048K FFT length: 707.801 ms.
Best time for 2560K FFT length: 947.244 ms.
Best time for 3072K FFT length: 1149.050 ms.
Best time for 3584K FFT length: 1382.488 ms.
Best time for 4096K FFT length: 1563.608 ms.
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Best time for 58 bit trial factors: 23.303 ms.
Best time for 59 bit trial factors: 23.267 ms.
Best time for 60 bit trial factors: 23.271 ms.
Best time for 61 bit trial factors: 23.336 ms.
Best time for 62 bit trial factors: 44.808 ms.
Best time for 63 bit trial factors: 45.114 ms.
Best time for 64 bit trial factors: 99.481 ms.
Best time for 65 bit trial factors: 100.564 ms.
Best time for 66 bit trial factors: 102.319 ms.
Best time for 67 bit trial factors: 102.628 ms.

Code:

Intel(R) Pentium(R) III processor
CPU speed: 597.48 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE
L1 cache size: 16 KB
L2 cache size: 256 KB
L1 cache line size: 32 bytes
L2 cache line size: 32 bytes
TLBS: 64
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 4K FFT length: 0.641 ms.
Best time for 5K FFT length: 0.925 ms.
Best time for 6K FFT length: 1.120 ms.
Best time for 7K FFT length: 1.367 ms.
Best time for 8K FFT length: 1.442 ms.
Best time for 10K FFT length: 2.026 ms.
Best time for 12K FFT length: 2.472 ms.
Best time for 14K FFT length: 3.043 ms.
Best time for 16K FFT length: 3.320 ms.
Best time for 20K FFT length: 4.695 ms.
Best time for 24K FFT length: 5.781 ms.
Best time for 28K FFT length: 7.366 ms.
Best time for 32K FFT length: 8.044 ms.
Best time for 40K FFT length: 10.185 ms.
Best time for 48K FFT length: 12.449 ms.
Best time for 56K FFT length: 15.343 ms.
Best time for 64K FFT length: 16.831 ms.
Best time for 80K FFT length: 23.333 ms.
Best time for 96K FFT length: 25.234 ms.
Best time for 112K FFT length: 30.402 ms.
Best time for 128K FFT length: 33.356 ms.
Best time for 160K FFT length: 44.899 ms.
Best time for 192K FFT length: 53.966 ms.
Best time for 224K FFT length: 65.367 ms.
Best time for 256K FFT length: 70.967 ms.
Best time for 320K FFT length: 93.376 ms.
Best time for 384K FFT length: 113.044 ms.
Best time for 448K FFT length: 135.201 ms.
Best time for 512K FFT length: 148.715 ms.
Best time for 640K FFT length: 202.005 ms.
Best time for 768K FFT length: 247.623 ms.
Best time for 896K FFT length: 308.115 ms.
Best time for 1024K FFT length: 324.878 ms.
Best time for 1280K FFT length: 454.747 ms.
Best time for 1536K FFT length: 546.414 ms.
Best time for 1792K FFT length: 650.640 ms.
Best time for 2048K FFT length: 721.138 ms.
Best time for 2560K FFT length: 961.606 ms.
Best time for 3072K FFT length: 1173.866 ms.
Best time for 3584K FFT length: 1423.258 ms.
Best time for 4096K FFT length: 1590.826 ms.
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Cannot initialize FFT code, errcode=1002
Best time for 58 bit trial factors: 23.782 ms.
Best time for 59 bit trial factors: 24.489 ms.
Best time for 60 bit trial factors: 23.737 ms.
Best time for 61 bit trial factors: 24.552 ms.
Best time for 62 bit trial factors: 44.196 ms.
Best time for 63 bit trial factors: 44.558 ms.
Best time for 64 bit trial factors: 100.792 ms.
Best time for 65 bit trial factors: 103.109 ms.
Best time for 66 bit trial factors: 104.189 ms.
Best time for 67 bit trial factors: 105.397 ms.

Prime95 · 2005-09-24, 13:51

Quote:

Originally Posted by Xyzzy

IBM Thinkpad X20... I have no idea why there are errors above the 4096K FFT...

FFTs above 4096K are only supported on SSE2 machines

2005-10-21, 03:24

Actually I met problem when I overclock my Sempron(2400), from FSB 166Mhz to 200 Mhz the Prime95(24.14) can never run anymore. I tried the stress test, result as attached photo.

Did you have any idea? I just seek for any consult. Thank you!

also post the benchmark result of mine:
AMD Sempron(tm)
CPU speed: 2004.38 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 32-bit version 24.14, RdtscTiming=2
Best time for 512K FFT length: 33.027 ms.
Best time for 640K FFT length: 45.046 ms.
Best time for 768K FFT length: 54.728 ms.
Best time for 896K FFT length: 66.896 ms.
Best time for 1024K FFT length: 74.485 ms.
Best time for 1280K FFT length: 96.607 ms.
Best time for 1536K FFT length: 116.334 ms.
Best time for 1792K FFT length: 141.390 ms.
Best time for 2048K FFT length: 157.385 ms.
Best time for 2560K FFT length: 218.517 ms.
Best time for 3072K FFT length: 259.720 ms.
Best time for 3584K FFT length: 314.750 ms.
Best time for 4096K FFT length: 350.173 ms.
Best time for 58 bit trial factors: 6.082 ms.
Best time for 59 bit trial factors: 6.109 ms.
Best time for 60 bit trial factors: 6.113 ms.
Best time for 61 bit trial factors: 6.110 ms.
Best time for 62 bit trial factors: 10.956 ms.
Best time for 63 bit trial factors: 10.881 ms.
Best time for 64 bit trial factors: 26.608 ms.
Best time for 65 bit trial factors: 27.032 ms.
Best time for 66 bit trial factors: 27.681 ms.
Best time for 67 bit trial factors: 27.766 ms.

before overclock:
AMD Sempron(tm)
CPU speed: 1663.53 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 69.079 ms.
Best time for 640K FFT length: 85.363 ms.
Best time for 768K FFT length: 128.393 ms.
Best time for 896K FFT length: 144.048 ms.
Best time for 1024K FFT length: 149.749 ms.
Best time for 1280K FFT length: 209.540 ms.
Best time for 1536K FFT length: 265.102 ms.
Best time for 1792K FFT length: 321.525 ms.
Best time for 2048K FFT length: 341.563 ms.
Best time for 2560K FFT length: 512.462 ms.
Best time for 3072K FFT length: 620.824 ms.
Best time for 3584K FFT length: 763.532 ms.
Best time for 4096K FFT length: 866.837 ms.
Best time for 58 bit trial factors: 7.576 ms.
Best time for 59 bit trial factors: 7.529 ms.
Best time for 60 bit trial factors: 7.576 ms.
Best time for 61 bit trial factors: 7.630 ms.
Best time for 62 bit trial factors: 13.561 ms.
Best time for 63 bit trial factors: 13.556 ms.
Best time for 64 bit trial factors: 62.503 ms.
Best time for 65 bit trial factors: 64.393 ms.
Best time for 66 bit trial factors: 64.519 ms.
Best time for 67 bit trial factors: 64.960 ms.

So looks a significent difference, but I can handle this override it.
I have tried to set CPU core Voltage from 1.6 to 1.625 and 1.65 no change.
also CPU/Ram interface: Enable/Disable no change

please help,

or I have to chang back to normal?

Cruelty · 2005-10-21, 08:43

Looks like you are pushing your system beyond the actual possibilities of your CPU / cooling / RAM configuration. If your CPU has an unlocked multiplier then lower it to 8 - if you still get an error, then your RAM is your problem (you should change FSB/RAM divider to 5/6, or lower your current memory timings).
If "8" works fine then increase the multiplier until it's not fine, and then apply some more voltage to CPU, lower RAM timings, change FSB/RAM divider etc. Overclocking is all about experimenting

E_tron · 2006-01-12, 09:06

AMD K8 Sempron machine without AMD64. Uses via embedded video.

Mobile AMD Sempron(tm) Processor 2800+
CPU speed: 1603.59 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2
L1 cache size: 64 KB
L2 cache size: 256 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 512
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 29.475 ms.
Best time for 640K FFT length: 39.598 ms.
Best time for 768K FFT length: 48.071 ms.
Best time for 896K FFT length: 57.625 ms.
Best time for 1024K FFT length: 64.099 ms.
Best time for 1280K FFT length: 81.349 ms.
Best time for 1536K FFT length: 99.367 ms.
Best time for 1792K FFT length: 120.121 ms.
Best time for 2048K FFT length: 133.777 ms.
Best time for 2560K FFT length: 178.057 ms.
Best time for 3072K FFT length: 218.279 ms.
Best time for 3584K FFT length: 264.239 ms.
Best time for 4096K FFT length: 296.623 ms.
Best time for 58 bit trial factors: 7.455 ms.
Best time for 59 bit trial factors: 7.453 ms.
Best time for 60 bit trial factors: 7.443 ms.
Best time for 61 bit trial factors: 7.462 ms.
Best time for 62 bit trial factors: 13.372 ms.
Best time for 63 bit trial factors: 13.389 ms.
Best time for 64 bit trial factors: 17.326 ms.
Best time for 65 bit trial factors: 17.200 ms.
Best time for 66 bit trial factors: 17.247 ms.
Best time for 67 bit trial factors: 17.165 ms.

E_tron · 2006-01-12, 09:18

...and of course, my ancient K7 running as a 3200+ on the nForce 2 chipset.

I can't believe its 3 years old...

AMD Athlon(tm) XP 3200+
CPU speed: 2194.22 MHz
CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 256
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 31.203 ms.
Best time for 640K FFT length: 42.154 ms.
Best time for 768K FFT length: 55.773 ms.
Best time for 896K FFT length: 66.333 ms.
Best time for 1024K FFT length: 76.116 ms.
Best time for 1280K FFT length: 99.318 ms.
Best time for 1536K FFT length: 116.653 ms.
Best time for 1792K FFT length: 152.558 ms.
Best time for 2048K FFT length: 169.162 ms.
Best time for 2560K FFT length: 225.129 ms.
Best time for 3072K FFT length: 280.908 ms.
Best time for 3584K FFT length: 335.248 ms.
Best time for 4096K FFT length: 338.973 ms.
Best time for 58 bit trial factors: 5.600 ms.
Best time for 59 bit trial factors: 5.616 ms.
Best time for 60 bit trial factors: 5.631 ms.
Best time for 61 bit trial factors: 5.621 ms.
Best time for 62 bit trial factors: 10.025 ms.
Best time for 63 bit trial factors: 10.019 ms.
Best time for 64 bit trial factors: 26.163 ms.
Best time for 65 bit trial factors: 24.848 ms.
Best time for 66 bit trial factors: 26.810 ms.
Best time for 67 bit trial factors: 26.188 ms.

xtreme2k · 2006-02-06, 13:21

Got the Intel Dual Core P-D 930. Overclocked it to 3.6GHz/1.2750v. Damn 65nm is really nice. Memory is DDR2-533 overclocked to DDR2-640 4-4-4-12 running in Dual Channel. Asus P5WD2 Premium.

---
Intel(R) Pentium(R) D CPU 3.00GHz
CPU speed: 3606.88 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 2048 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 12.597 ms.
Best time for 640K FFT length: 16.128 ms.
Best time for 768K FFT length: 19.673 ms.
Best time for 896K FFT length: 23.874 ms.
Best time for 1024K FFT length: 27.440 ms.
Best time for 1280K FFT length: 33.784 ms.
Best time for 1536K FFT length: 40.852 ms.
Best time for 1792K FFT length: 48.905 ms.
Best time for 2048K FFT length: 54.445 ms.
Best time for 2560K FFT length: 72.677 ms.
Best time for 3072K FFT length: 87.273 ms.
Best time for 3584K FFT length: 105.199 ms.
Best time for 4096K FFT length: 116.954 ms.
Best time for 58 bit trial factors: 7.618 ms.
Best time for 59 bit trial factors: 7.679 ms.
Best time for 60 bit trial factors: 7.599 ms.
Best time for 61 bit trial factors: 7.638 ms.
Best time for 62 bit trial factors: 10.491 ms.
Best time for 63 bit trial factors: 10.518 ms.
Best time for 64 bit trial factors: 12.315 ms.
Best time for 65 bit trial factors: 12.266 ms.
Best time for 66 bit trial factors: 12.215 ms.
Best time for 67 bit trial factors: 12.239 ms.

R.D. Silverman · 2006-02-06, 13:30

Quote:

Originally Posted by xtreme2k

Got the Intel Dual Core P-D 930. Overclocked it to 3.6GHz/1.2750v. Damn 65nm is really nice. Memory is DDR2-533 overclocked to DDR2-640 4-4-4-12 running in Dual Channel. Asus P5WD2 Premium.

If I send you some executables and some data (source too, if you like)
could/would you run a lattice sieve benchmark on your machine, with both
processors running?

xtreme2k · 2006-02-06, 14:08

Quote:

Originally Posted by R.D. Silverman

If I send you some executables and some data (source too, if you like)
could/would you run a lattice sieve benchmark on your machine, with both
processors running?

Sure. PM'd

lycorn · 2006-03-03, 00:09

There follows an update of my P4 Northwood benchmarks:

Intel(R) Pentium(R) 4 CPU 3.20GHz
CPU speed: 3550.86 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.13, RdtscTiming=1
Best time for 512K FFT length: 12.092 ms.
Best time for 640K FFT length: 15.644 ms.
Best time for 768K FFT length: 19.374 ms.
Best time for 896K FFT length: 22.791 ms.
Best time for 1024K FFT length: 25.509 ms.
Best time for 1280K FFT length: 32.602 ms.
Best time for 1536K FFT length: 40.291 ms.
Best time for 1792K FFT length: 47.481 ms.
Best time for 2048K FFT length: 53.093 ms.
Best time for 2560K FFT length: 69.443 ms.
Best time for 3072K FFT length: 88.424 ms.
Best time for 3584K FFT length: 104.012 ms.
Best time for 4096K FFT length: 118.710 ms.
Best time for 58 bit trial factors: 8.068 ms.
Best time for 59 bit trial factors: 8.153 ms.
Best time for 60 bit trial factors: 8.218 ms.
Best time for 61 bit trial factors: 8.162 ms.
Best time for 62 bit trial factors: 8.895 ms.
Best time for 63 bit trial factors: 8.907 ms.
Best time for 64 bit trial factors: 10.883 ms.
Best time for 65 bit trial factors: 10.839 ms.
Best time for 66 bit trial factors: 10.791 ms.
Best time for 67 bit trial factors: 10.774 ms.

After all this time, the old good Northwood still proves to be a great core...

victor · 2006-03-03, 11:09

Code:

Intel(R) Pentium(R) 4 CPU 2.80GHz
CPU speed: 2792.15 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 8 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 16.028 ms.
Best time for 640K FFT length: 20.697 ms.
Best time for 768K FFT length: 25.469 ms.
Best time for 896K FFT length: 30.756 ms.
Best time for 1024K FFT length: 34.554 ms.
Best time for 1280K FFT length: 45.479 ms.
Best time for 1536K FFT length: 55.205 ms.
Best time for 1792K FFT length: 65.780 ms.
Best time for 2048K FFT length: 74.676 ms.
Best time for 2560K FFT length: 99.163 ms.
Best time for 3072K FFT length: 128.772 ms.
Best time for 3584K FFT length: 144.310 ms.
Best time for 4096K FFT length: 164.700 ms.
Best time for 58 bit trial factors: 10.962 ms.
Best time for 59 bit trial factors: 10.764 ms.
Best time for 60 bit trial factors: 11.020 ms.
Best time for 61 bit trial factors: 10.765 ms.
Best time for 62 bit trial factors: 11.615 ms.
Best time for 63 bit trial factors: 11.612 ms.
Best time for 64 bit trial factors: 14.439 ms.
Best time for 65 bit trial factors: 14.396 ms.
Best time for 66 bit trial factors: 14.572 ms.
Best time for 67 bit trial factors: 14.514 ms.

Eivind · 2006-03-03, 14:45

Out of the box, standard compagny computer. No tweaking.

Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 2992.43 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 64 bytes
L2 cache line size: 128 bytes
TLBS: 64
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 16.149 ms.
Best time for 640K FFT length: 20.820 ms.
Best time for 768K FFT length: 25.277 ms.
Best time for 896K FFT length: 31.356 ms.
Best time for 1024K FFT length: 35.228 ms.
Best time for 1280K FFT length: 43.594 ms.
Best time for 1536K FFT length: 52.577 ms.
Best time for 1792K FFT length: 63.381 ms.
Best time for 2048K FFT length: 70.185 ms.
Best time for 2560K FFT length: 92.746 ms.
Best time for 3072K FFT length: 111.623 ms.
Best time for 3584K FFT length: 135.101 ms.
Best time for 4096K FFT length: 149.395 ms.
Best time for 58 bit trial factors: 9.273 ms.
Best time for 59 bit trial factors: 9.264 ms.
Best time for 60 bit trial factors: 9.228 ms.
Best time for 61 bit trial factors: 9.281 ms.
Best time for 62 bit trial factors: 12.881 ms.
Best time for 63 bit trial factors: 12.910 ms.
Best time for 64 bit trial factors: 14.643 ms.
Best time for 65 bit trial factors: 14.590 ms.
Best time for 66 bit trial factors: 14.629 ms.
Best time for 67 bit trial factors: 14.555 ms.

-Eivind

2004-11-13, 19:36	#151
RickC Mar 2003 3²×5 Posts	Prescott Benchmark Dell Dimension 8400 Prescott P4 530 3Ghz with HT enabled 800Mhz FSB 1GB DDR2 533Mhz SDRAM Memory timings 4-4-4-11 Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 2992.62 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: unknown L2 cache size: 1024 KB L1 cache line size: unknown L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 13.496 ms. Best time for 448K FFT length: 16.435 ms. Best time for 512K FFT length: 18.520 ms. Best time for 640K FFT length: 22.103 ms. Best time for 768K FFT length: 26.495 ms. Best time for 896K FFT length: 32.001 ms. Best time for 1024K FFT length: 35.678 ms. Best time for 1280K FFT length: 47.433 ms. Best time for 1536K FFT length: 56.837 ms. Best time for 1792K FFT length: 68.142 ms. Best time for 2048K FFT length: 75.934 ms.

2004-12-08, 23:18	#154
call_apple Nov 2002 Ashburn, Va. 15₁₆ Posts	Cpu One ====================================================== Old: AMD Athlon(TM) MP 2200+ CPU speed: 1800.15 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE L1 cache size: 64 KB L2 cache size: 256 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 version 23.3, RdtscTiming=1 Best time for 384K FFT length: 41.519 ms. Best time for 448K FFT length: 47.322 ms. Best time for 512K FFT length: 52.143 ms. Best time for 640K FFT length: 66.722 ms. Best time for 768K FFT length: 81.191 ms. Best time for 896K FFT length: 94.903 ms. Best time for 1024K FFT length: 109.538 ms. Best time for 1280K FFT length: 143.869 ms. Best time for 1536K FFT length: 173.316 ms. Best time for 1792K FFT length: 207.672 ms. Best time for 2048K FFT length: 233.781 ms. New: AMD Athlon(TM) MP 2200+ CPU speed: 1800.17 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE L1 cache size: 64 KB L2 cache size: 256 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 39.208 ms. Best time for 640K FFT length: 52.837 ms. Best time for 768K FFT length: 64.023 ms. Best time for 896K FFT length: 77.936 ms. Best time for 1024K FFT length: 86.933 ms. Best time for 1280K FFT length: 121.610 ms. Best time for 1536K FFT length: 144.434 ms. Best time for 1792K FFT length: 173.274 ms. Best time for 2048K FFT length: 195.461 ms. Cpu Two ========================================================== Old: AMD Athlon(TM) MP 2200+ CPU speed: 1800.17 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE L1 cache size: 64 KB L2 cache size: 256 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 42.440 ms. Best time for 448K FFT length: 49.725 ms. Best time for 512K FFT length: 55.982 ms. Best time for 640K FFT length: 69.025 ms. Best time for 768K FFT length: 86.266 ms. Best time for 896K FFT length: 102.657 ms. Best time for 1024K FFT length: 118.855 ms. Best time for 1280K FFT length: 161.338 ms. Best time for 1536K FFT length: 187.211 ms. Best time for 1792K FFT length: 234.243 ms. Best time for 2048K FFT length: 272.827 ms. New: AMD Athlon(TM) MP 2200+ CPU speed: 1799.98 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE L1 cache size: 64 KB L2 cache size: 256 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 37.970 ms. Best time for 640K FFT length: 51.516 ms. Best time for 768K FFT length: 65.473 ms. Best time for 896K FFT length: 76.852 ms. Best time for 1024K FFT length: 84.473 ms. Best time for 1280K FFT length: 121.307 ms. Best time for 1536K FFT length: 148.918 ms. Best time for 1792K FFT length: 170.046 ms. Best time for 2048K FFT length: 196.279 ms. Last fiddled with by call_apple on 2004-12-08 at 23:25

2004-12-14, 02:31	#156
db597 Jan 2003 11001011₂ Posts	P4 560 LGA775 Results for P4 560 LGA775 cpu overclocked to 3.5GHz (using dual channel DDR2 533MHz memory). CPU is the Prescott D0 stepping. Operating system used is Linux Fedora Core 3 on the v2.6.9 SMP kernel. The cpu is totally stable, and I can even overclock to 3.6+GHz. But when running Prime95, the temperature soon nears 80 degrees.... something I'm not too comfortable with. Once over the 3.5GHz mark, temperature increases exponentially. I've capped the overclock to 3.5GHz - temp is just a tad under 70 degrees using stock cooling. ----------------------------------------- Intel(R) Pentium(R) 4 CPU 3.20GHz CPU speed: 3498.11 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: unknown L2 cache size: 1024 KB L1 cache line size: unknown L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.5, RdtscTiming=1 Best time for 384K FFT length: 11.793 ms. Best time for 448K FFT length: 14.393 ms. Best time for 512K FFT length: 16.170 ms. Best time for 640K FFT length: 19.264 ms. Best time for 768K FFT length: 23.014 ms. Best time for 896K FFT length: 27.900 ms. Best time for 1024K FFT length: 31.025 ms. Best time for 1280K FFT length: 41.291 ms. Best time for 1536K FFT length: 49.396 ms. Best time for 1792K FFT length: 59.506 ms. Best time for 2048K FFT length: 66.311 ms. Best time for 2560K FFT length: 86.558 ms. Best time for 3072K FFT length: 106.501 ms. Best time for 3584K FFT length: 127.698 ms. Best time for 4096K FFT length: 141.639 ms. Last fiddled with by db597 on 2004-12-14 at 02:39

2005-02-19, 17:30	#166
patrik "Patrik Johansson" Aug 2002 Uppsala, Sweden 5²×17 Posts	Prescotts almost matching Northwoods? Following the discussion in this thread (about running one or two instances of Prime95) I did some benchmarks. The interesting ones are from my new 3.2 GHz Prescott. I also downclocked an overclocked Northwood 3.0 GHz to about 3.2 GHz for easy comparison. The very interensting result is that for a hyperthreaded Prescott you get an overall performance gain by running two instances of Prime95, even when doing two Lucas-Lehmer tests. Furthermore, the benchmark then almost matches the Northwood. The benchmarks below are the best times for three or four benchmarks. 1. Benchmark while DoubleCheck=13201703,64,1 running in the background. Intel(R) Pentium(R) 4 CPU 3.20GHz CPU speed: 3206.73 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 16 KB L2 cache size: 1024 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.9, RdtscTiming=1 Best time for 384K FFT length: 22.869 ms. Best time for 448K FFT length: 27.621 ms. Best time for 512K FFT length: 30.467 ms. Best time for 640K FFT length: 37.389 ms. Best time for 768K FFT length: 45.457 ms. Best time for 896K FFT length: 54.429 ms. Best time for 1024K FFT length: 60.250 ms. Best time for 1280K FFT length: 79.546 ms. Best time for 1536K FFT length: 97.146 ms. Best time for 1792K FFT length: 117.733 ms. Best time for 2048K FFT length: 131.689 ms. Best time for 2560K FFT length: 166.244 ms. Best time for 3072K FFT length: 204.503 ms. Best time for 3584K FFT length: 247.794 ms. Best time for 4096K FFT length: 278.716 ms. 2. Benchmark while Test=27013621,67,1 running in the background. Intel(R) Pentium(R) 4 CPU 3.20GHz CPU speed: 3207.83 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 16 KB L2 cache size: 1024 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.9, RdtscTiming=1 Best time for 384K FFT length: 22.850 ms. Best time for 448K FFT length: 27.544 ms. Best time for 512K FFT length: 30.459 ms. Best time for 640K FFT length: 37.607 ms. Best time for 768K FFT length: 45.587 ms. Best time for 896K FFT length: 54.744 ms. Best time for 1024K FFT length: 60.321 ms. Best time for 1280K FFT length: 80.209 ms. Best time for 1536K FFT length: 98.357 ms. Best time for 1792K FFT length: 118.863 ms. Best time for 2048K FFT length: 133.361 ms. Best time for 2560K FFT length: 168.011 ms. Best time for 3072K FFT length: 208.208 ms. Best time for 3584K FFT length: 253.071 ms. Best time for 4096K FFT length: 285.369 ms. 3. Benchmark when only one mprime client running. Intel(R) Pentium(R) 4 CPU 3.20GHz CPU speed: 3207.83 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 16 KB L2 cache size: 1024 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.9, RdtscTiming=1 Best time for 384K FFT length: 12.799 ms. Best time for 448K FFT length: 15.582 ms. Best time for 512K FFT length: 17.519 ms. Best time for 640K FFT length: 20.947 ms. Best time for 768K FFT length: 25.195 ms. Best time for 896K FFT length: 30.331 ms. Best time for 1024K FFT length: 33.974 ms. Best time for 1280K FFT length: 45.011 ms. Best time for 1536K FFT length: 54.056 ms. Best time for 1792K FFT length: 65.079 ms. Best time for 2048K FFT length: 72.909 ms. Best time for 2560K FFT length: 93.961 ms. Best time for 3072K FFT length: 115.239 ms. Best time for 3584K FFT length: 138.523 ms. Best time for 4096K FFT length: 153.291 ms. 4. Reference Northwood benchmark (no speed improvement was made from v23.5 to v23.9 AFAIK) Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 3208.66 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 8 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.5, RdtscTiming=1 Best time for 384K FFT length: 11.321 ms. Best time for 448K FFT length: 13.444 ms. Best time for 512K FFT length: 15.293 ms. Best time for 640K FFT length: 18.250 ms. Best time for 768K FFT length: 22.253 ms. Best time for 896K FFT length: 26.336 ms. Best time for 1024K FFT length: 29.525 ms. Best time for 1280K FFT length: 38.728 ms. Best time for 1536K FFT length: 47.640 ms. Best time for 1792K FFT length: 56.561 ms. Best time for 2048K FFT length: 64.160 ms. Best time for 2560K FFT length: 81.034 ms. Best time for 3072K FFT length: 101.501 ms. Best time for 3584K FFT length: 123.872 ms. Best time for 4096K FFT length: 138.102 ms. Hardware: Pentium 4 3.20E GHz (Prescott core) 800 MHz system bus ASUS P4P800S-X Kingston KVR400X64C25/256 (single channel 400 MHz DDR) Pentium 4 3.0 GHz (Northwood core) 800 MHz system bus ASUS P4P800-E Deluxe 2xKingston KVR400X64C25/256 (dual channel 400 MHz DDR) overclocked to 3.2 GHz (FSB214) Edit: OS: Linux kernel 2.4.20-8smp, Red Hat Linux release 9 (Shrike) Last fiddled with by patrik on 2005-02-19 at 17:33

2005-04-01, 06:05	#172
TauCeti Mar 2003 Braunschweig, Germany 2×113 Posts	New Beta 24.11 with Athlon64 (W32/32 bit) Mainboard ECS-nForce4-A939, DDR-400: AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1809.08 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 29.930 ms. Best time for 640K FFT length: 37.258 ms. Best time for 768K FFT length: 45.091 ms. Best time for 896K FFT length: 54.571 ms. Best time for 1024K FFT length: 60.653 ms. Best time for 1280K FFT length: 80.412 ms. Best time for 1536K FFT length: 98.028 ms. Best time for 1792K FFT length: 118.198 ms. Best time for 2048K FFT length: 131.602 ms. [Fri Apr 01 07:57:33 2005] Results from 23.5 Version: AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1809.25 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 23.5, RdtscTiming=1 Best time for 384K FFT length: 23.853 ms. Best time for 448K FFT length: 28.699 ms. Best time for 512K FFT length: 32.122 ms. Best time for 640K FFT length: 40.456 ms. Best time for 768K FFT length: 49.149 ms. Best time for 896K FFT length: 59.255 ms. Best time for 1024K FFT length: 66.528 ms. Best time for 1280K FFT length: 88.512 ms. Best time for 1536K FFT length: 106.524 ms. Best time for 1792K FFT length: 128.484 ms. Best time for 2048K FFT length: 144.814 ms.

2004-11-17, 01:04	#152
Xyzzy "Mike" Aug 2002 20065₈ Posts	Dell Dimension 3000 2.8GHz Prescott with 1MB L2 cache 2x256MB dual channel PC3200 @ PC2700 (533MHz FSB) CAS 2.5-3-3-7 No HT, PAT enabled Onboard integrated graphics (I added a PCI video card but the times were the same!) Intel(R) Pentium(R) 4 CPU 2.80GHz CPU speed: 2792.91 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: unknown L2 cache size: 1024 KB L1 cache line size: unknown L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 14.153 ms. Best time for 448K FFT length: 17.207 ms. Best time for 512K FFT length: 19.421 ms. Best time for 640K FFT length: 22.937 ms. Best time for 768K FFT length: 27.816 ms. Best time for 896K FFT length: 33.254 ms. Best time for 1024K FFT length: 37.036 ms. Best time for 1280K FFT length: 49.127 ms. Best time for 1536K FFT length: 59.320 ms. Best time for 1792K FFT length: 70.765 ms. Best time for 2048K FFT length: 79.966 ms. Best time for 2560K FFT length: 101.899 ms. Best time for 3072K FFT length: 127.414 ms. Best time for 3584K FFT length: 151.838 ms. Best time for 4096K FFT length: 169.765 ms.

2004-12-05, 09:51	#153
Pconfig Jun 2004 5×11 Posts	Precott 550 CPU on LGA775 1024mb DDR2 ram 225*17 = 3825 MHz Intel(R) Pentium(R) 4 CPU 3.40GHz CPU speed: 3825.20 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: unknown L2 cache size: 1024 KB L1 cache line size: unknown L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 10.609 ms. Best time for 448K FFT length: 12.911 ms. Best time for 512K FFT length: 14.638 ms. Best time for 640K FFT length: 17.431 ms. Best time for 768K FFT length: 20.925 ms. Best time for 896K FFT length: 25.299 ms. Best time for 1024K FFT length: 28.172 ms. Best time for 1280K FFT length: 37.391 ms. Best time for 1536K FFT length: 44.654 ms. Best time for 1792K FFT length: 53.613 ms. Best time for 2048K FFT length: 59.840 ms.

2004-12-13, 22:44	#155
Arthanis Dec 2004 2²·3 Posts	AMD Athlon(tm) XP 2800+ CPU speed: 2104.25 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 32.000 ms. Best time for 448K FFT length: 37.268 ms. Best time for 512K FFT length: 39.828 ms. Best time for 640K FFT length: 52.321 ms. Best time for 768K FFT length: 62.694 ms. Best time for 896K FFT length: 74.428 ms. Best time for 1024K FFT length: 83.805 ms. Best time for 1280K FFT length: 112.444 ms. Best time for 1536K FFT length: 130.893 ms. Best time for 1792K FFT length: 162.407 ms. Best time for 2048K FFT length: 175.045 ms. [Sat Dec 11 19:57:26 2004] Sorry for ask, isnt mine too low for a Athlon XP barton 2800 +? I f it is, what can I do to improve it?

2004-12-14, 08:51	#158
Arthanis Dec 2004 1100₂ Posts	Oh, thank you, I will try that

2004-12-14, 09:00	#159
Arthanis Dec 2004 2²×3 Posts	Wherer do I find it? It isnt in theDownload section...

2004-12-14, 09:17	#160
ET_ Banned "Luigi" Aug 2002 Team Italia 1001011010011₂ Posts	http://www.mersenne.org/gimps/p95v246.zip Luigi

2004-12-16, 00:14	#161
E_tron Sep 2002 Austin, TX 1000110001₂ Posts	Whoa, there's a new version? That helps Athlons?!!! I stopped checking like a year ago.

2004-12-25, 16:02	#164
Danath May 2003 Republic of Moldova 2³·5 Posts	Celeron (Northwood) 2.4GHz @ 2.8GHz, chipset i865G (video-on-board), DDR 400MHz @ 311MHz Intel(R) Celeron(R) CPU 2.40GHz CPU speed: 2806.21 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 8 KB L2 cache size: 128 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.7, RdtscTiming=1 Best time for 384K FFT length: 19.329 ms. Best time for 448K FFT length: 24.803 ms. Best time for 512K FFT length: 32.872 ms. Best time for 640K FFT length: 33.125 ms. Best time for 768K FFT length: 40.236 ms. Best time for 896K FFT length: 48.984 ms. Best time for 1024K FFT length: 55.322 ms. Best time for 1280K FFT length: 80.108 ms. Best time for 1536K FFT length: 99.579 ms. Best time for 1792K FFT length: 137.465 ms. Best time for 2048K FFT length: 162.117 ms. Intel(R) Celeron(R) CPU 2.40GHz CPU speed: 2806.18 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 8 KB L2 cache size: 128 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 31.994 ms. Best time for 640K FFT length: 31.768 ms. Best time for 768K FFT length: 41.484 ms. Best time for 896K FFT length: 46.763 ms. Best time for 1024K FFT length: 52.918 ms. Best time for 1280K FFT length: 80.034 ms. Best time for 1536K FFT length: 101.632 ms. Best time for 1792K FFT length: 134.529 ms. Best time for 2048K FFT length: 161.108 ms.

2004-12-28, 16:16	#165
kaeptn_kork Sep 2002 24₁₀ Posts	Asus P4P800, RAM 192 MHz 2-2-2-5 DC Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 3600.77 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 8 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 9.890 ms. Best time for 448K FFT length: 11.761 ms. Best time for 512K FFT length: 13.348 ms. Best time for 640K FFT length: 16.041 ms. Best time for 768K FFT length: 19.508 ms. Best time for 896K FFT length: 23.160 ms. Best time for 1024K FFT length: 25.942 ms. Best time for 1280K FFT length: 34.017 ms. Best time for 1536K FFT length: 41.864 ms. Best time for 1792K FFT length: 49.859 ms. Best time for 2048K FFT length: 56.399 ms. new version slightly slower on my machine: Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 3600.85 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 8 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 13.409 ms. Best time for 640K FFT length: 16.000 ms. Best time for 768K FFT length: 19.889 ms. Best time for 896K FFT length: 23.393 ms. Best time for 1024K FFT length: 26.156 ms. Best time for 1280K FFT length: 34.041 ms. Best time for 1536K FFT length: 42.975 ms. Best time for 1792K FFT length: 50.143 ms. Best time for 2048K FFT length: 56.739 ms.

2005-02-20, 16:46	#169
Danath May 2003 Republic of Moldova 2³·5 Posts	So it would be the best to run two regular LL tests simultaneously for some time (rather than one LL test and a benchmark), and then watch the average timings for this period of time (you need to set the "time between screen outputs" to some value, say 10-30 minutes).

2005-04-01, 17:52	#173
Jeff Gilchrist Jun 2003 Ottawa, Canada 3×17×23 Posts	TauCeti, how does 24.6 compare as well in speed?

2005-04-01, 18:29	#174
TauCeti Mar 2003 Braunschweig, Germany 2×113 Posts	23.8 / 24.6 / 24.11 on my A64-3000+ Winnie / DDR400 I do only TF on my A64, so i never used 24.6 before. If you need more/other benchmarks, just drop a line... AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1809.32 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 23.796 ms. Best time for 448K FFT length: 28.631 ms. Best time for 512K FFT length: 31.960 ms. Best time for 640K FFT length: 40.412 ms. Best time for 768K FFT length: 48.982 ms. Best time for 896K FFT length: 58.961 ms. Best time for 1024K FFT length: 66.275 ms. Best time for 1280K FFT length: 88.329 ms. Best time for 1536K FFT length: 105.977 ms. Best time for 1792K FFT length: 128.341 ms. Best time for 2048K FFT length: 144.325 ms. AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1809.32 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 32.344 ms. Best time for 640K FFT length: 40.449 ms. Best time for 768K FFT length: 49.196 ms. Best time for 896K FFT length: 59.287 ms. Best time for 1024K FFT length: 66.484 ms. Best time for 1280K FFT length: 88.567 ms. Best time for 1536K FFT length: 106.343 ms. Best time for 1792K FFT length: 128.518 ms. Best time for 2048K FFT length: 144.893 ms. [Fri Apr 01 20:05:29 2005] AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1809.14 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 33.003 ms. Best time for 640K FFT length: 44.065 ms. Best time for 768K FFT length: 53.294 ms. Best time for 896K FFT length: 64.741 ms. Best time for 1024K FFT length: 72.098 ms. Best time for 1280K FFT length: 94.982 ms. Best time for 1536K FFT length: 113.497 ms. Best time for 1792K FFT length: 136.471 ms. Best time for 2048K FFT length: 151.474 ms. AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1808.97 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 29.906 ms. Best time for 640K FFT length: 37.193 ms. Best time for 768K FFT length: 45.105 ms. Best time for 896K FFT length: 54.600 ms. Best time for 1024K FFT length: 60.659 ms. Best time for 1280K FFT length: 80.405 ms. Best time for 1536K FFT length: 98.117 ms. Best time for 1792K FFT length: 118.071 ms. Best time for 2048K FFT length: 131.648 ms.

2005-04-04, 20:13	#175
Dresdenboy Apr 2003 Berlin, Germany 19² Posts	23.8 / 24.6 / 24.11 (32/64bit) on my A64-3000+ (orig. Sledgehammer core)/DDR400CL2.5 I have an A64 3000+ (2Ghz, 512kB L2, single channel RAM) with C0 stepping (unfortunately not the new E0-Stepping - several percent faster than 130nm steppings thanks to the core improvements). Now the numbers: Prime95 version 23.8 AMD Athlon(tm) 64 Processor 3000+ CPU speed: 2002.45 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 23.219 ms. Best time for 448K FFT length: 27.941 ms. Best time for 512K FFT length: 31.232 ms. Best time for 640K FFT length: 39.588 ms. Best time for 768K FFT length: 48.090 ms. Best time for 896K FFT length: 58.028 ms. Best time for 1024K FFT length: 65.605 ms. Best time for 1280K FFT length: 87.466 ms. Best time for 1536K FFT length: 104.623 ms. Best time for 1792K FFT length: 127.425 ms. Best time for 2048K FFT length: 143.992 ms. Prime95 version 24.6: AMD Athlon(tm) 64 Processor 3000+ CPU speed: 2002.55 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 31.568 ms. Best time for 640K FFT length: 39.566 ms. Best time for 768K FFT length: 48.178 ms. Best time for 896K FFT length: 58.333 ms. Best time for 1024K FFT length: 65.933 ms. Best time for 1280K FFT length: 87.748 ms. Best time for 1536K FFT length: 105.167 ms. Best time for 1792K FFT length: 127.511 ms. Best time for 2048K FFT length: 144.549 ms. Prime95 version 24.11 (32 bit): AMD Athlon(tm) 64 Processor 3000+ CPU speed: 2002.89 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 28.314 ms. Best time for 640K FFT length: 33.947 ms. Best time for 768K FFT length: 40.932 ms. Best time for 896K FFT length: 49.756 ms. Best time for 1024K FFT length: 55.855 ms. Best time for 1280K FFT length: 73.371 ms. Best time for 1536K FFT length: 90.066 ms. Best time for 1792K FFT length: 108.263 ms. Best time for 2048K FFT length: 121.138 ms. Best time for 58 bit trial factors: 6.010 ms. Best time for 59 bit trial factors: 6.032 ms. Best time for 60 bit trial factors: 6.003 ms. Best time for 61 bit trial factors: 6.029 ms. Best time for 62 bit trial factors: 10.961 ms. Best time for 63 bit trial factors: 10.963 ms. Best time for 64 bit trial factors: 13.932 ms. Best time for 65 bit trial factors: 13.836 ms. Best time for 66 bit trial factors: 13.849 ms. Best time for 67 bit trial factors: 13.831 ms. Prime95 version 24.11 (32 bit - no prefetching): AMD Athlon(tm) 64 Processor 3000+ CPU speed: 2002.59 MHz CPU features: RDTSC, CMOV, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 28.202 ms. Best time for 640K FFT length: 33.791 ms. Best time for 768K FFT length: 40.883 ms. Best time for 896K FFT length: 49.690 ms. Best time for 1024K FFT length: 55.278 ms. Best time for 1280K FFT length: 73.254 ms. Best time for 1536K FFT length: 89.828 ms. Best time for 1792K FFT length: 107.797 ms. Best time for 2048K FFT length: 120.921 ms. Best time for 58 bit trial factors: 6.025 ms. Best time for 59 bit trial factors: 6.031 ms. Best time for 60 bit trial factors: 6.022 ms. Best time for 61 bit trial factors: 6.034 ms. Best time for 62 bit trial factors: 10.988 ms. Best time for 63 bit trial factors: 11.008 ms. Best time for 64 bit trial factors: 13.936 ms. Best time for 65 bit trial factors: 13.850 ms. Best time for 66 bit trial factors: 13.884 ms. Best time for 67 bit trial factors: 13.805 ms. Prime95 version 24.11 (64 bit): AMD Athlon(tm) 64 Processor 3000+ CPU speed: 2002.99 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 28.344 ms. Best time for 640K FFT length: 34.008 ms. Best time for 768K FFT length: 41.064 ms. Best time for 896K FFT length: 49.705 ms. Best time for 1024K FFT length: 55.251 ms. Best time for 1280K FFT length: 73.524 ms. Best time for 1536K FFT length: 90.159 ms. Best time for 1792K FFT length: 108.715 ms. Best time for 2048K FFT length: 121.390 ms. Best time for 58 bit trial factors: 3.786 ms. Best time for 59 bit trial factors: 3.782 ms. Best time for 60 bit trial factors: 4.032 ms. Best time for 61 bit trial factors: 4.140 ms. Best time for 62 bit trial factors: 4.843 ms. Best time for 63 bit trial factors: 5.643 ms. Best time for 64 bit trial factors: 6.816 ms. Best time for 65 bit trial factors: 8.007 ms. Best time for 66 bit trial factors: 7.951 ms. Best time for 67 bit trial factors: 7.934 ms. Last fiddled with by Dresdenboy on 2005-04-04 at 20:22

2005-04-04, 20:29	#176
Dresdenboy Apr 2003 Berlin, Germany 19² Posts	And now the results at nearly the same clock as TauCeti's results (so it's a single channel C0 stepping vs. dual channel D0 stepping comparison): Prime95 version 23.8: AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1802.17 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 25.667 ms. Best time for 448K FFT length: 30.738 ms. Best time for 512K FFT length: 34.357 ms. Best time for 640K FFT length: 43.645 ms. Best time for 768K FFT length: 53.144 ms. Best time for 896K FFT length: 64.121 ms. Best time for 1024K FFT length: 72.369 ms. Best time for 1280K FFT length: 96.437 ms. Best time for 1536K FFT length: 115.376 ms. Best time for 1792K FFT length: 140.484 ms. Best time for 2048K FFT length: 158.688 ms. Prime95 version 24.6: AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1802.60 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.6, RdtscTiming=1 Best time for 512K FFT length: 34.759 ms. Best time for 640K FFT length: 43.714 ms. Best time for 768K FFT length: 53.068 ms. Best time for 896K FFT length: 64.443 ms. Best time for 1024K FFT length: 72.695 ms. Best time for 1280K FFT length: 97.047 ms. Best time for 1536K FFT length: 115.727 ms. Best time for 1792K FFT length: 140.678 ms. Best time for 2048K FFT length: 159.164 ms. Prime95 version 24.11 (32 bit): AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1802.18 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 30.952 ms. Best time for 640K FFT length: 37.624 ms. Best time for 768K FFT length: 45.487 ms. Best time for 896K FFT length: 55.276 ms. Best time for 1024K FFT length: 61.360 ms. Best time for 1280K FFT length: 81.566 ms. Best time for 1536K FFT length: 99.931 ms. Best time for 1792K FFT length: 119.917 ms. Best time for 2048K FFT length: 134.330 ms. (I didn't repeat the 64bit test at 1.8 GHz and also removed the TF results)

2005-04-29, 15:18	#177
db597 Jan 2003 7·29 Posts	23.8->24.11: Small speed up on Prescott My benchmarks for primality tests show between 2% to 2.5% improvement in speed over v23.8. I've omitted trial factoring results - for speed reasons, these should obviously be done on an Athlon64 instead. Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 3606.52 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE, SSE2 L1 cache size: unknown L2 cache size: 1024 KB L1 cache line size: unknown L2 cache line size: 128 bytes TLBS: 64 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 11.277 ms. Best time for 448K FFT length: 13.754 ms. Best time for 512K FFT length: 15.516 ms. Best time for 640K FFT length: 18.498 ms. Best time for 768K FFT length: 22.251 ms. Best time for 896K FFT length: 26.829 ms. Best time for 1024K FFT length: 29.903 ms. Best time for 1280K FFT length: 39.753 ms. Best time for 1536K FFT length: 47.627 ms. Best time for 1792K FFT length: 57.110 ms. Best time for 2048K FFT length: 63.914 ms. ------------------------------------------------------------------ Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 3606.36 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 16 KB L2 cache size: 1024 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 15.204 ms. Best time for 640K FFT length: 17.987 ms. Best time for 768K FFT length: 21.828 ms. Best time for 896K FFT length: 26.251 ms. Best time for 1024K FFT length: 29.212 ms. Best time for 1280K FFT length: 38.418 ms. Best time for 1536K FFT length: 46.333 ms. Best time for 1792K FFT length: 55.928 ms. Best time for 2048K FFT length: 62.366 ms.

2005-05-02, 03:28	#178
Peter Nelson Oct 2004 23² Posts	INTEL 630 benchmark (in 32-bit mode) I was able to benchmark prime95 on one of Intel's new processors. Interesting to compare with standard Northwood/Prescott 3GHz processors. Not massively fast, dual channel memory would help it, but at least it runs ok. There are big potential speedups if a 64 bit client can be made to work on this processor but a 64 bit OS would be required. Note the L2 cache is 2MB. [INTEL 630 @ native 3GHz] Primenet client version 24.11.2 HP/Compaq machine running SINGLE channel 512MB memory using XP HOME. Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 3000.78 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 16 KB L2 cache size: 2048 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 18.358 ms. Best time for 640K FFT length: 21.796 ms. Best time for 768K FFT length: 26.365 ms. Best time for 896K FFT length: 31.650 ms. Best time for 1024K FFT length: 35.298 ms. Best time for 1280K FFT length: 46.438 ms. Best time for 1536K FFT length: 55.953 ms. Best time for 1792K FFT length: 67.795 ms. Best time for 2048K FFT length: 75.294 ms. Best time for 58 bit trial factors: 9.258 ms. Best time for 59 bit trial factors: 9.919 ms. Best time for 60 bit trial factors: 9.899 ms. Best time for 61 bit trial factors: 9.947 ms. Best time for 62 bit trial factors: 13.751 ms. Best time for 63 bit trial factors: 13.761 ms. Best time for 64 bit trial factors: 15.693 ms. Best time for 65 bit trial factors: 15.589 ms. Best time for 66 bit trial factors: 15.661 ms. Best time for 67 bit trial factors: 15.525 ms. Last fiddled with by Peter Nelson on 2005-05-02 at 03:32

2005-05-21, 06:07	#179
dans Oct 2002 3·7 Posts	Windows x64 release version benchmanrks Using the x64 version of 24.11 I benchmarked a cheap-o Frys (ECS motherboard, AMD Athlon x64 3000 combo) with 512mb SDRAM, using the release version of Microsofts Windows XP 2003 x64 SP1. Here are the three sequential benchmarks: AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1998.94 MHz Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 28.234 ms. Best time for 640K FFT length: 34.057 ms. Best time for 768K FFT length: 40.837 ms. Best time for 896K FFT length: 49.316 ms. Best time for 1024K FFT length: 55.013 ms. Best time for 1280K FFT length: 73.149 ms. Best time for 1536K FFT length: 90.600 ms. Best time for 1792K FFT length: 108.582 ms. Best time for 2048K FFT length: 121.559 ms. AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1998.94 MHz Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 28.384 ms. Best time for 640K FFT length: 34.024 ms. Best time for 768K FFT length: 40.827 ms. Best time for 896K FFT length: 49.260 ms. Best time for 1024K FFT length: 55.037 ms. Best time for 1280K FFT length: 73.128 ms. Best time for 1536K FFT length: 90.858 ms. Best time for 1792K FFT length: 108.570 ms. Best time for 2048K FFT length: 121.433 ms. AMD Athlon(tm) 64 Processor 3000+ CPU speed: 1998.94 MHz Prime95 version 24.11, RdtscTiming=1 Best time for 512K FFT length: 28.387 ms. Best time for 640K FFT length: 34.020 ms. Best time for 768K FFT length: 40.843 ms. Best time for 896K FFT length: 49.293 ms. Best time for 1024K FFT length: 55.024 ms. Best time for 1280K FFT length: 73.018 ms. Best time for 1536K FFT length: 90.954 ms. Best time for 1792K FFT length: 108.646 ms. Best time for 2048K FFT length: 121.696 ms.

2005-07-13, 23:40	#181
wfgarnett3 "William Garnett III" Oct 2002 Bensalem, PA 2·43 Posts	Can you have both "CPUs" run their own respective benchmarks simultaneously, and then post the results? Do 2 dual cores almost behave like 2 separate PCs (i.e. twice as much done)? Anyone have a dual core P4 do test on?

2005-07-15, 05:45	#183
Mike May 2004 Vancouver, Canada 2²·5² Posts	Dell Latitude D610 Intel(R) Pentium(R) M processor 2.00GHz CPU speed: 798.04 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 32 KB L2 cache size: 2048 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 128 Prime95 32-bit version 24.13, RdtscTiming=1 Best time for 512K FFT length: 34.729 ms. Best time for 640K FFT length: 45.092 ms. Best time for 768K FFT length: 55.294 ms. Best time for 896K FFT length: 66.351 ms. Best time for 1024K FFT length: 76.485 ms. Best time for 1280K FFT length: 93.653 ms. Best time for 1536K FFT length: 114.354 ms. Best time for 1792K FFT length: 137.284 ms. Best time for 2048K FFT length: 154.242 ms. Best time for 2560K FFT length: 197.927 ms. Best time for 3072K FFT length: 241.244 ms. Best time for 3584K FFT length: 288.680 ms. Best time for 4096K FFT length: 323.769 ms. Best time for 58 bit trial factors: 6.590 ms. Best time for 59 bit trial factors: 6.617 ms. Best time for 60 bit trial factors: 6.609 ms. Best time for 61 bit trial factors: 6.599 ms. Best time for 62 bit trial factors: 9.313 ms. Best time for 63 bit trial factors: 9.359 ms. Best time for 64 bit trial factors: 16.100 ms. Best time for 65 bit trial factors: 15.991 ms. Best time for 66 bit trial factors: 16.019 ms. Best time for 67 bit trial factors: 15.981 ms. Btw, it says it's running at about 800 MHz, but it's actually at 1.99 GHz (100% according to Windows). There's no hyperthreading either Last fiddled with by Mike on 2005-07-15 at 05:48

2005-07-16, 05:52	#184
wfgarnett3 "William Garnett III" Oct 2002 Bensalem, PA 2×43 Posts	anybody have a dual core P4? Does anyone have a dual core P4? If so, can you please post some benchmarks similar to nomadicus above. I am curious that when running 2 instances of Prime95 on a dual core P4, how close do you get to getting "twice" as much done? Nomadicus benchmarks seem to show the dual core X2 from AMD gets real close. Finally, even though for single cores, the Pentium 4 is faster, which architecture (at same clock speeds) gets 2 tests done quicker, a dual core X2 or a dual core P4? Is P4 overall still ahead, or will a dual core X2 be the new CPU of choice?

2005-07-17, 12:41	#186
lunna Mar 2003 2⁴ Posts	Because dual-core machines are still new I made a screendump of what LL testing looks like. Upper left is core 0, lower right is core 1. You can see the machine isn't used much by the consistant iteration times - it's still waiting for some hardware components before the real install is done. Also, LL testing on core 0 is slightly slower which I believe is due to the Windows scheduler putting jobs on the first available processor, and since none is available, on the first one. Attached Thumbnails

2005-09-21, 00:24	#188
markhl Apr 2003 California 2²·23 Posts	Comparing versions 23.8 and 24.14 on a PIII. I already posted a summary of this in the thread Best version for Pentium III?. Version 24.14 runs a bit faster esp. for smaller FFTs: Intel(R) Pentium(R) III processor CPU speed: 863.94 MHz CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE L1 cache size: 16 KB L2 cache size: 256 KB L1 cache line size: 32 bytes L2 cache line size: 32 bytes TLBS: 64 Prime95 version 23.8, RdtscTiming=1 Best time for 384K FFT length: 89.321 ms. Best time for 448K FFT length: 105.162 ms. Best time for 512K FFT length: 118.724 ms. Best time for 640K FFT length: 155.014 ms. Best time for 768K FFT length: 186.329 ms. Best time for 896K FFT length: 220.750 ms. Best time for 1024K FFT length: 251.107 ms. Best time for 1280K FFT length: 332.890 ms. Best time for 1536K FFT length: 391.854 ms. Best time for 1792K FFT length: 489.075 ms. Best time for 2048K FFT length: 536.903 ms. [Thu Sep 15 10:46:23 2005] Compare your results to other computers at http://www.mersenne.org/bench.htm That web page also contains instructions on how your results can be included. Intel(R) Pentium(R) III processor CPU speed: 863.68 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE L1 cache size: 16 KB L2 cache size: 256 KB L1 cache line size: 32 bytes L2 cache line size: 32 bytes TLBS: 64 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 105.534 ms. Best time for 640K FFT length: 141.510 ms. Best time for 768K FFT length: 172.151 ms. Best time for 896K FFT length: 207.871 ms. Best time for 1024K FFT length: 238.667 ms. Best time for 1280K FFT length: 325.389 ms. Best time for 1536K FFT length: 390.802 ms. Best time for 1792K FFT length: 468.968 ms. Best time for 2048K FFT length: 521.360 ms. Best time for 2560K FFT length: 686.274 ms. Best time for 3072K FFT length: 840.009 ms. Best time for 3584K FFT length: 1011.680 ms. Best time for 4096K FFT length: 1155.709 ms. Best time for 58 bit trial factors: 16.110 ms. Best time for 59 bit trial factors: 16.103 ms. Best time for 60 bit trial factors: 16.059 ms. Best time for 61 bit trial factors: 16.132 ms. Best time for 62 bit trial factors: 30.487 ms. Best time for 63 bit trial factors: 30.523 ms. Best time for 64 bit trial factors: 68.564 ms. Best time for 65 bit trial factors: 69.811 ms. Best time for 66 bit trial factors: 70.682 ms. Best time for 67 bit trial factors: 71.022 ms.

2005-10-21, 03:24	#191
ckinason 2³×5²×11 Posts	For my overclock Sempron(2400) Actually I met problem when I overclock my Sempron(2400), from FSB 166Mhz to 200 Mhz the Prime95(24.14) can never run anymore. I tried the stress test, result as attached photo. Did you have any idea? I just seek for any consult. Thank you! also post the benchmark result of mine: AMD Sempron(tm) CPU speed: 2004.38 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE L1 cache size: 64 KB L2 cache size: 256 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 32-bit version 24.14, RdtscTiming=2 Best time for 512K FFT length: 33.027 ms. Best time for 640K FFT length: 45.046 ms. Best time for 768K FFT length: 54.728 ms. Best time for 896K FFT length: 66.896 ms. Best time for 1024K FFT length: 74.485 ms. Best time for 1280K FFT length: 96.607 ms. Best time for 1536K FFT length: 116.334 ms. Best time for 1792K FFT length: 141.390 ms. Best time for 2048K FFT length: 157.385 ms. Best time for 2560K FFT length: 218.517 ms. Best time for 3072K FFT length: 259.720 ms. Best time for 3584K FFT length: 314.750 ms. Best time for 4096K FFT length: 350.173 ms. Best time for 58 bit trial factors: 6.082 ms. Best time for 59 bit trial factors: 6.109 ms. Best time for 60 bit trial factors: 6.113 ms. Best time for 61 bit trial factors: 6.110 ms. Best time for 62 bit trial factors: 10.956 ms. Best time for 63 bit trial factors: 10.881 ms. Best time for 64 bit trial factors: 26.608 ms. Best time for 65 bit trial factors: 27.032 ms. Best time for 66 bit trial factors: 27.681 ms. Best time for 67 bit trial factors: 27.766 ms. before overclock: AMD Sempron(tm) CPU speed: 1663.53 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE L1 cache size: 64 KB L2 cache size: 256 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 69.079 ms. Best time for 640K FFT length: 85.363 ms. Best time for 768K FFT length: 128.393 ms. Best time for 896K FFT length: 144.048 ms. Best time for 1024K FFT length: 149.749 ms. Best time for 1280K FFT length: 209.540 ms. Best time for 1536K FFT length: 265.102 ms. Best time for 1792K FFT length: 321.525 ms. Best time for 2048K FFT length: 341.563 ms. Best time for 2560K FFT length: 512.462 ms. Best time for 3072K FFT length: 620.824 ms. Best time for 3584K FFT length: 763.532 ms. Best time for 4096K FFT length: 866.837 ms. Best time for 58 bit trial factors: 7.576 ms. Best time for 59 bit trial factors: 7.529 ms. Best time for 60 bit trial factors: 7.576 ms. Best time for 61 bit trial factors: 7.630 ms. Best time for 62 bit trial factors: 13.561 ms. Best time for 63 bit trial factors: 13.556 ms. Best time for 64 bit trial factors: 62.503 ms. Best time for 65 bit trial factors: 64.393 ms. Best time for 66 bit trial factors: 64.519 ms. Best time for 67 bit trial factors: 64.960 ms. So looks a significent difference, but I can handle this override it. I have tried to set CPU core Voltage from 1.6 to 1.625 and 1.65 no change. also CPU/Ram interface: Enable/Disable no change please help, or I have to chang back to normal? Attached Thumbnails

2005-10-21, 08:43	#192
Cruelty May 2005 11001011000₂ Posts	Looks like you are pushing your system beyond the actual possibilities of your CPU / cooling / RAM configuration. If your CPU has an unlocked multiplier then lower it to 8 - if you still get an error, then your RAM is your problem (you should change FSB/RAM divider to 5/6, or lower your current memory timings). If "8" works fine then increase the multiplier until it's not fine, and then apply some more voltage to CPU, lower RAM timings, change FSB/RAM divider etc. Overclocking is all about experimenting

2006-01-12, 09:06	#193
E_tron Sep 2002 Austin, TX 1000110001₂ Posts	AMD K8 Sempron machine without AMD64. Uses via embedded video. Mobile AMD Sempron(tm) Processor 2800+ CPU speed: 1603.59 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 256 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 512 Prime95 32-bit version 24.13, RdtscTiming=1 Best time for 512K FFT length: 29.475 ms. Best time for 640K FFT length: 39.598 ms. Best time for 768K FFT length: 48.071 ms. Best time for 896K FFT length: 57.625 ms. Best time for 1024K FFT length: 64.099 ms. Best time for 1280K FFT length: 81.349 ms. Best time for 1536K FFT length: 99.367 ms. Best time for 1792K FFT length: 120.121 ms. Best time for 2048K FFT length: 133.777 ms. Best time for 2560K FFT length: 178.057 ms. Best time for 3072K FFT length: 218.279 ms. Best time for 3584K FFT length: 264.239 ms. Best time for 4096K FFT length: 296.623 ms. Best time for 58 bit trial factors: 7.455 ms. Best time for 59 bit trial factors: 7.453 ms. Best time for 60 bit trial factors: 7.443 ms. Best time for 61 bit trial factors: 7.462 ms. Best time for 62 bit trial factors: 13.372 ms. Best time for 63 bit trial factors: 13.389 ms. Best time for 64 bit trial factors: 17.326 ms. Best time for 65 bit trial factors: 17.200 ms. Best time for 66 bit trial factors: 17.247 ms. Best time for 67 bit trial factors: 17.165 ms.

2006-01-12, 09:18	#194
E_tron Sep 2002 Austin, TX 3×11×17 Posts	...and of course, my ancient K7 running as a 3200+ on the nForce 2 chipset. I can't believe its 3 years old... AMD Athlon(tm) XP 3200+ CPU speed: 2194.22 MHz CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 256 Prime95 32-bit version 24.13, RdtscTiming=1 Best time for 512K FFT length: 31.203 ms. Best time for 640K FFT length: 42.154 ms. Best time for 768K FFT length: 55.773 ms. Best time for 896K FFT length: 66.333 ms. Best time for 1024K FFT length: 76.116 ms. Best time for 1280K FFT length: 99.318 ms. Best time for 1536K FFT length: 116.653 ms. Best time for 1792K FFT length: 152.558 ms. Best time for 2048K FFT length: 169.162 ms. Best time for 2560K FFT length: 225.129 ms. Best time for 3072K FFT length: 280.908 ms. Best time for 3584K FFT length: 335.248 ms. Best time for 4096K FFT length: 338.973 ms. Best time for 58 bit trial factors: 5.600 ms. Best time for 59 bit trial factors: 5.616 ms. Best time for 60 bit trial factors: 5.631 ms. Best time for 61 bit trial factors: 5.621 ms. Best time for 62 bit trial factors: 10.025 ms. Best time for 63 bit trial factors: 10.019 ms. Best time for 64 bit trial factors: 26.163 ms. Best time for 65 bit trial factors: 24.848 ms. Best time for 66 bit trial factors: 26.810 ms. Best time for 67 bit trial factors: 26.188 ms.

2006-02-06, 13:21	#195
xtreme2k Aug 2002 2×3×29 Posts	Got the Intel Dual Core P-D 930. Overclocked it to 3.6GHz/1.2750v. Damn 65nm is really nice. Memory is DDR2-533 overclocked to DDR2-640 4-4-4-12 running in Dual Channel. Asus P5WD2 Premium. --- Intel(R) Pentium(R) D CPU 3.00GHz CPU speed: 3606.88 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 16 KB L2 cache size: 2048 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 12.597 ms. Best time for 640K FFT length: 16.128 ms. Best time for 768K FFT length: 19.673 ms. Best time for 896K FFT length: 23.874 ms. Best time for 1024K FFT length: 27.440 ms. Best time for 1280K FFT length: 33.784 ms. Best time for 1536K FFT length: 40.852 ms. Best time for 1792K FFT length: 48.905 ms. Best time for 2048K FFT length: 54.445 ms. Best time for 2560K FFT length: 72.677 ms. Best time for 3072K FFT length: 87.273 ms. Best time for 3584K FFT length: 105.199 ms. Best time for 4096K FFT length: 116.954 ms. Best time for 58 bit trial factors: 7.618 ms. Best time for 59 bit trial factors: 7.679 ms. Best time for 60 bit trial factors: 7.599 ms. Best time for 61 bit trial factors: 7.638 ms. Best time for 62 bit trial factors: 10.491 ms. Best time for 63 bit trial factors: 10.518 ms. Best time for 64 bit trial factors: 12.315 ms. Best time for 65 bit trial factors: 12.266 ms. Best time for 66 bit trial factors: 12.215 ms. Best time for 67 bit trial factors: 12.239 ms. Last fiddled with by xtreme2k on 2006-02-06 at 13:22

2006-03-03, 00:09	#198
lycorn "GIMFS" Sep 2002 Oeiras, Portugal 2·11·67 Posts	There follows an update of my P4 Northwood benchmarks: Intel(R) Pentium(R) 4 CPU 3.20GHz CPU speed: 3550.86 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 8 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 32-bit version 24.13, RdtscTiming=1 Best time for 512K FFT length: 12.092 ms. Best time for 640K FFT length: 15.644 ms. Best time for 768K FFT length: 19.374 ms. Best time for 896K FFT length: 22.791 ms. Best time for 1024K FFT length: 25.509 ms. Best time for 1280K FFT length: 32.602 ms. Best time for 1536K FFT length: 40.291 ms. Best time for 1792K FFT length: 47.481 ms. Best time for 2048K FFT length: 53.093 ms. Best time for 2560K FFT length: 69.443 ms. Best time for 3072K FFT length: 88.424 ms. Best time for 3584K FFT length: 104.012 ms. Best time for 4096K FFT length: 118.710 ms. Best time for 58 bit trial factors: 8.068 ms. Best time for 59 bit trial factors: 8.153 ms. Best time for 60 bit trial factors: 8.218 ms. Best time for 61 bit trial factors: 8.162 ms. Best time for 62 bit trial factors: 8.895 ms. Best time for 63 bit trial factors: 8.907 ms. Best time for 64 bit trial factors: 10.883 ms. Best time for 65 bit trial factors: 10.839 ms. Best time for 66 bit trial factors: 10.791 ms. Best time for 67 bit trial factors: 10.774 ms. After all this time, the old good Northwood still proves to be a great core...

2006-03-03, 14:45	#200
Eivind Feb 2006 33₁₆ Posts	Out of the box, standard compagny computer. No tweaking. Intel(R) Pentium(R) 4 CPU 3.00GHz CPU speed: 2992.43 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 16 KB L2 cache size: 1024 KB L1 cache line size: 64 bytes L2 cache line size: 128 bytes TLBS: 64 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 16.149 ms. Best time for 640K FFT length: 20.820 ms. Best time for 768K FFT length: 25.277 ms. Best time for 896K FFT length: 31.356 ms. Best time for 1024K FFT length: 35.228 ms. Best time for 1280K FFT length: 43.594 ms. Best time for 1536K FFT length: 52.577 ms. Best time for 1792K FFT length: 63.381 ms. Best time for 2048K FFT length: 70.185 ms. Best time for 2560K FFT length: 92.746 ms. Best time for 3072K FFT length: 111.623 ms. Best time for 3584K FFT length: 135.101 ms. Best time for 4096K FFT length: 149.395 ms. Best time for 58 bit trial factors: 9.273 ms. Best time for 59 bit trial factors: 9.264 ms. Best time for 60 bit trial factors: 9.228 ms. Best time for 61 bit trial factors: 9.281 ms. Best time for 62 bit trial factors: 12.881 ms. Best time for 63 bit trial factors: 12.910 ms. Best time for 64 bit trial factors: 14.643 ms. Best time for 65 bit trial factors: 14.590 ms. Best time for 66 bit trial factors: 14.629 ms. Best time for 67 bit trial factors: 14.555 ms. -Eivind

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