Perpetual benchmark thread... - Page 11

Prime95 · 2006-09-05, 00:05

Quote:

Originally Posted by wfgarnett3

"Something interesting happens when disabling all instructions except SSE2: in the 64-bit Prime95 for FFT>4096; there is a speed increase..."

Probably just a normal variation in benchmark timings.

Cruelty · 2006-09-05, 12:08

Quote:

Originally Posted by Prime95

Probably just a normal variation in benchmark timings.

Hmmm, the difference between "RDTSC, CMOV, Prefetch" enabled benchmark and benchmark with those features disabled varies between 3 and 7% in favour of "SSE2 + MMX" only benchmark. This doesn't look like some standard variation to me.
I will rerun benchmarks one more time today to verify this.

Cruelty · 2006-09-05, 20:17

I have verified it once more, however this time I was not able to reproduce the difference I have observed before - the differences are less than 1% actually. This makes me think what could actually happened before

nucleon · 2006-09-11, 04:50

Some overclocked scores.

Note: The machine at this speed, is definately NOT stable. I report this for pure curiousity. Core2 Duo E6600 @ 9.0x400MHZ, ram is 5-5-5-15@800MHz. Motherboard was gigabyte DQ6. CPU voltage in bios was set to 1.4375V.

Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
CPU speed: 3599.83 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: unknown
L1 cache line size: 64 bytes
L2 cache line size: unknown
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 7.170 ms.
Best time for 640K FFT length: 9.797 ms.
Best time for 768K FFT length: 12.102 ms.
Best time for 896K FFT length: 14.519 ms.
Best time for 1024K FFT length: 16.154 ms.
Best time for 1280K FFT length: 20.645 ms.
Best time for 1536K FFT length: 25.202 ms.
Best time for 1792K FFT length: 30.008 ms.
Best time for 2048K FFT length: 33.477 ms.
Best time for 2560K FFT length: 44.055 ms.
Best time for 3072K FFT length: 53.719 ms.
Best time for 3584K FFT length: 65.128 ms.
Best time for 4096K FFT length: 73.232 ms.
Best time for 58 bit trial factors: 3.118 ms.
Best time for 59 bit trial factors: 3.108 ms.
Best time for 60 bit trial factors: 3.087 ms.
Best time for 61 bit trial factors: 3.104 ms.
Best time for 62 bit trial factors: 4.964 ms.
Best time for 63 bit trial factors: 4.958 ms.
Best time for 64 bit trial factors: 4.748 ms.
Best time for 65 bit trial factors: 4.715 ms.
Best time for 66 bit trial factors: 4.716 ms.
Best time for 67 bit trial factors: 4.707 ms.

And now for a more stable overclock:

Same motherboard/cpu, cpu set to 9.0x366, ram set to 5-5-5-15@732GHz. CPU voltage set to 1.4V in bios.

Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
CPU speed: 3293.81 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: unknown
L1 cache line size: 64 bytes
L2 cache line size: unknown
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 7.844 ms.
Best time for 640K FFT length: 10.697 ms.
Best time for 768K FFT length: 13.249 ms.
Best time for 896K FFT length: 15.878 ms.
Best time for 1024K FFT length: 17.651 ms.
Best time for 1280K FFT length: 22.570 ms.
Best time for 1536K FFT length: 27.498 ms.
Best time for 1792K FFT length: 32.758 ms.
Best time for 2048K FFT length: 36.457 ms.
Best time for 2560K FFT length: 48.145 ms.
Best time for 3072K FFT length: 58.777 ms.
Best time for 3584K FFT length: 70.937 ms.
Best time for 4096K FFT length: 79.638 ms.
Best time for 58 bit trial factors: 3.392 ms.
Best time for 59 bit trial factors: 3.411 ms.
Best time for 60 bit trial factors: 3.403 ms.
Best time for 61 bit trial factors: 3.392 ms.
Best time for 62 bit trial factors: 5.412 ms.
Best time for 63 bit trial factors: 5.418 ms.
Best time for 64 bit trial factors: 5.189 ms.
Best time for 65 bit trial factors: 5.151 ms.
Best time for 66 bit trial factors: 5.155 ms.
Best time for 67 bit trial factors: 5.135 ms.

No wonder Intel is v.happy with the core2 duo range. Seems to be plenty of life in the platform.

-- Craig

S485122 · 2006-09-11, 16:55

I achieved this on a D830 whithout fiddling a lot. But now I am running at a more conservative 3450 MHz : a temperature rising to 80 °C is not good to keep for long ;-) Even at a moderate 3450 MHZ more than 150W has to be transfered away via the cooler.

I think about swapping the D830 for a D950 (with the coming of the Core 2 Duos they are cheapper.) The main incentive is energy conservation : the D830 gobbles electricity to change it to heat and as a byproduct you get some calculations, the D950 has a 95 W thermal design compared to the 130 W of the D830.

IMO the performance should be expressed by W. Then it is possibly the laptops that will be top of the mark.

Intel(R) Pentium(R) D CPU 3.00GHz
CPU speed: 3831.98 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: 12.331 ms.
Best time for 640K FFT length: 15.652 ms.
Best time for 768K FFT length: 19.051 ms.
Best time for 896K FFT length: 23.156 ms.
Best time for 1024K FFT length: 26.556 ms.
Best time for 1280K FFT length: 32.667 ms.
Best time for 1536K FFT length: 39.548 ms.
Best time for 1792K FFT length: 47.307 ms.
Best time for 2048K FFT length: 52.848 ms.
Best time for 2560K FFT length: 69.977 ms.
Best time for 3072K FFT length: 84.469 ms.
Best time for 3584K FFT length: 101.152 ms.
Best time for 4096K FFT length: 113.266 ms.
Best time for 58 bit trial factors: 7.267 ms.
Best time for 59 bit trial factors: 7.266 ms.
Best time for 60 bit trial factors: 7.232 ms.
Best time for 61 bit trial factors: 7.245 ms.
Best time for 62 bit trial factors: 9.951 ms.
Best time for 63 bit trial factors: 9.921 ms.
Best time for 64 bit trial factors: 11.646 ms.
Best time for 65 bit trial factors: 11.602 ms.
Best time for 66 bit trial factors: 11.562 ms.
Best time for 67 bit trial factors: 11.528 ms.

patrik · 2006-09-14, 20:57

Quote:

Originally Posted by nucleon

Same motherboard/cpu, cpu set to 9.0x366, ram set to 5-5-5-15@732GHz. CPU voltage set to 1.4V in bios.

You got some fast memory there.

I ordered one of those CPU's three weeks ago, and still haven't got it yet.

Ethan (EO) · 2006-09-26, 07:08

Wow -- I haven't dabbled much in overclocking since the Celeron 300A to 450Mhz overclock was popular. Before that it was a bevy of 486-75s that I ran at 100 (man, they kicked butt at assignments in the ~90000 range :P) but I had to give it a try with my new Core 2 Duo E6300. This is a CPU that can be had for around $200 these days. I stuck it on a Gigabyte P965-DS3 and added 2x512MB of Patriot DDR2-800 memory. Total cost under $500 for the CPU, memory, and motherboard!

Anyway, here're results running with the memory at 950 (475), running 4-4-4-12! This puts the CPU at around 3330Mhz, compared to stock 1.86Mhz. This is all with plain old heatsink + fan cooling, at default voltage on the CPU, but 2.0V on the DDR2. Even with only 2MB of L2 cache, the chip does very well. 60 minutes of torture testing have completed so far without error.

Is using overclocked machines for doublechecking assignments only considered okay these days?

Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz
CPU speed: 3324.79 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
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 7.892 ms.
Best time for 640K FFT length: 10.524 ms.
Best time for 768K FFT length: 12.935 ms.
Best time for 896K FFT length: 15.336 ms.
Best time for 1024K FFT length: 17.735 ms.
Best time for 1280K FFT length: 21.791 ms.
Best time for 1536K FFT length: 26.581 ms.
Best time for 1792K FFT length: 31.648 ms.
Best time for 2048K FFT length: 35.131 ms.
Best time for 2560K FFT length: 46.543 ms.
Best time for 3072K FFT length: 56.683 ms.
Best time for 3584K FFT length: 67.478 ms.
Best time for 4096K FFT length: 75.717 ms.
Best time for 58 bit trial factors: 3.385 ms.
Best time for 59 bit trial factors: 3.387 ms.
Best time for 60 bit trial factors: 3.382 ms.
Best time for 61 bit trial factors: 3.369 ms.
Best time for 62 bit trial factors: 5.361 ms.
Best time for 63 bit trial factors: 5.369 ms.
Best time for 64 bit trial factors: 5.142 ms.
Best time for 65 bit trial factors: 5.122 ms.
Best time for 66 bit trial factors: 5.113 ms.
Best time for 67 bit trial factors: 5.098 ms.

Xyzzy · 2006-09-27, 22:03

Thinkpad R60

Genuine Intel(R) CPU T2400 @ 1.83GHz
CPU speed: 1828.76 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 24.14, RdtscTiming=1
Best time for 4K FFT length: 0.171 ms.
Best time for 5K FFT length: 0.234 ms.
Best time for 6K FFT length: 0.286 ms.
Best time for 7K FFT length: 0.353 ms.
Best time for 8K FFT length: 0.374 ms.
Best time for 10K FFT length: 0.511 ms.
Best time for 12K FFT length: 0.625 ms.
Best time for 14K FFT length: 0.757 ms.
Best time for 16K FFT length: 0.814 ms.
Best time for 20K FFT length: 1.077 ms.
Best time for 24K FFT length: 1.313 ms.
Best time for 28K FFT length: 2.204 ms.
Best time for 32K FFT length: 2.381 ms.
Best time for 40K FFT length: 2.347 ms.
Best time for 48K FFT length: 2.863 ms.
Best time for 56K FFT length: 6.336 ms.
Best time for 64K FFT length: 6.940 ms.
Best time for 80K FFT length: 5.000 ms.
Best time for 96K FFT length: 6.095 ms.
Best time for 112K FFT length: 7.349 ms.
Best time for 128K FFT length: 7.987 ms.
Best time for 160K FFT length: 10.126 ms.
Best time for 192K FFT length: 12.452 ms.
Best time for 224K FFT length: 15.024 ms.
Best time for 256K FFT length: 16.575 ms.
Best time for 320K FFT length: 21.302 ms.
Best time for 384K FFT length: 26.015 ms.
Best time for 448K FFT length: 31.459 ms.
Best time for 512K FFT length: 34.800 ms.
Best time for 640K FFT length: 45.330 ms.
Best time for 768K FFT length: 55.600 ms.
Best time for 896K FFT length: 67.050 ms.
Best time for 1024K FFT length: 73.663 ms.
Best time for 1280K FFT length: 93.992 ms.
Best time for 1536K FFT length: 165.700 ms.
Best time for 1792K FFT length: 138.377 ms.
Best time for 2048K FFT length: 152.803 ms.
Best time for 2560K FFT length: 198.646 ms.
Best time for 3072K FFT length: 242.798 ms.
Best time for 3584K FFT length: 297.018 ms.
Best time for 4096K FFT length: 322.378 ms.
Best time for 5120K FFT length: 416.810 ms.
Best time for 6144K FFT length: 508.040 ms.
Best time for 7168K FFT length: 605.520 ms.
Best time for 8192K FFT length: 677.469 ms.
Best time for 10240K FFT length: 871.545 ms.
Best time for 12288K FFT length: 1066.386 ms.
Best time for 14336K FFT length: 1293.276 ms.
Best time for 16384K FFT length: 1447.221 ms.
Best time for 20480K FFT length: 1893.942 ms.
Best time for 24576K FFT length: 2593.825 ms.
Best time for 28672K FFT length: 2759.387 ms.
Best time for 32768K FFT length: 3092.036 ms.
Best time for 58 bit trial factors: 7.248 ms.
Best time for 59 bit trial factors: 7.270 ms.
Best time for 60 bit trial factors: 7.245 ms.
Best time for 61 bit trial factors: 7.166 ms.
Best time for 62 bit trial factors: 10.161 ms.
Best time for 63 bit trial factors: 10.211 ms.
Best time for 64 bit trial factors: 17.443 ms.
Best time for 65 bit trial factors: 17.342 ms.
Best time for 66 bit trial factors: 17.348 ms.
Best time for 67 bit trial factors: 17.307 ms.

cheesehead · 2006-09-28, 23:36

Quote:

Originally Posted by Ethan (EO)

Is using overclocked machines for doublechecking assignments only considered okay these days?

Some might prefer to see a fast system do first-time tests, but where's the line between an OCed not-so-fast CPU and a fast CPU? I think it's okay. It'd take a whole buncha OCs to make DC catch up noticeably close to first-time.

And, as I've pointed out elsewhere, your choice doesn't matter one way or another to GIMPS progress. We can use all contributions, large or small, in any work category. It's far more important not to poach a GIMPS assignment (which may dishearten the assignee) than it is to steer a CPU of any speed toward or away from a particular work category. If GIMPS administrators think contributions are "out of balance", there are ways of rebalancing while still allowing all participants free choice of work type, as long as a substantial fraction of participants use the default choice of "whatever makes sense".

(Personally I prefer to see an OC torture-tested at least 50 hours without errors before trusting it with any GIMPS assignment, but I'm known to be picky.)

Ethan (EO) · 2006-09-29, 19:28

Quote:

Originally Posted by cheesehead

(Personally I prefer to see an OC torture-tested at least 50 hours without errors before trusting it with any GIMPS assignment, but I'm known to be picky.)

This part of your response gets more to what I was intending to ask... that is, it seems to me that the risk of bad data being contributed by an overclocked machine is significantly lower if it is used only for doublechecking.

Besides, when DC work catches up to first time checking, that just means it's time to start full-scale triple checking :) In fact, I've been wondering if that would be a reasonable feature to try to get in to PrimeNet v5/Prime95 v25: the option to use glucas or other code on a "triplecheck" assignment using a Prime95 client with both the prime95 and glucas LL code incorporated.

-Ethan

sbinh · 2006-10-04, 03:58

Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
CPU speed: 3208.70 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
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 8.297 ms.
Best time for 640K FFT length: 11.172 ms.
Best time for 768K FFT length: 13.760 ms.
Best time for 896K FFT length: 16.313 ms.
Best time for 1024K FFT length: 19.000 ms.
Best time for 1280K FFT length: 23.140 ms.
Best time for 1536K FFT length: 28.153 ms.
Best time for 1792K FFT length: 33.469 ms.
Best time for 2048K FFT length: 37.296 ms.
Best time for 2560K FFT length: 49.089 ms.
Best time for 3072K FFT length: 59.792 ms.
Best time for 3584K FFT length: 71.360 ms.
Best time for 4096K FFT length: 79.554 ms.
Best time for 58 bit trial factors: 3.486 ms.
Best time for 59 bit trial factors: 3.507 ms.
Best time for 60 bit trial factors: 3.493 ms.
Best time for 61 bit trial factors: 3.482 ms.
Best time for 62 bit trial factors: 5.555 ms.
Best time for 63 bit trial factors: 5.563 ms.
Best time for 64 bit trial factors: 5.326 ms.
Best time for 65 bit trial factors: 5.288 ms.
Best time for 66 bit trial factors: 5.291 ms.
Best time for 67 bit trial factors: 5.273 ms.

sbinh · 2006-10-05, 05:41

New one:

Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
CPU speed: 3199.98 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
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 8.147 ms.
Best time for 640K FFT length: 10.868 ms.
Best time for 768K FFT length: 13.311 ms.
Best time for 896K FFT length: 15.784 ms.
Best time for 1024K FFT length: 18.369 ms.
Best time for 1280K FFT length: 22.397 ms.
Best time for 1536K FFT length: 27.284 ms.
Best time for 1792K FFT length: 32.427 ms.
Best time for 2048K FFT length: 36.093 ms.
Best time for 2560K FFT length: 47.589 ms.
Best time for 3072K FFT length: 57.954 ms.
Best time for 3584K FFT length: 69.026 ms.
Best time for 4096K FFT length: 77.254 ms.
Best time for 58 bit trial factors: 3.475 ms.
Best time for 59 bit trial factors: 3.517 ms.
Best time for 60 bit trial factors: 3.502 ms.
Best time for 61 bit trial factors: 3.493 ms.
Best time for 62 bit trial factors: 5.572 ms.
Best time for 63 bit trial factors: 5.578 ms.
Best time for 64 bit trial factors: 5.341 ms.
Best time for 65 bit trial factors: 5.303 ms.
Best time for 66 bit trial factors: 5.306 ms.
Best time for 67 bit trial factors: 5.283 ms.

Uncwilly · 2006-12-06, 20:34

Here are the results from a machine that has given me fits. At times it is good, at times it slows down.

on a 1024K FFT number it was turning out 0.252-0.273 iterations
Mersenne.org says this machine should turn out 0.271
After stopping the test, running the bench, restarting, it is now running 0.33's

Sometimes I can exit p95 and restart to drop it back down, but often I have to reboot to get it back down.

Intel(R) Pentium(R) III processor
CPU speed: 799.86 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 23.5, RdtscTiming=1
Best time for 384K FFT length: 101.627 ms.
Best time for 448K FFT length: 143.503 ms.
Best time for 512K FFT length: 122.174 ms.
Best time for 640K FFT length: 157.036 ms.
Best time for 768K FFT length: 231.036 ms.
Best time for 896K FFT length: 251.145 ms.
Best time for 1024K FFT length: 287.802 ms.
Best time for 1280K FFT length: 403.974 ms.
Best time for 1536K FFT length: 503.238 ms.
Best time for 1792K FFT length: 603.771 ms.
Best time for 2048K FFT length: 684.936 ms.
Best time for 2560K FFT length: 966.430 ms.
Best time for 3072K FFT length: 1245.202 ms.
Best time for 3584K FFT length: 1501.162 ms.
Best time for 4096K FFT length: 1702.090 ms.

E_tron · 2006-12-08, 00:08

Quote:

Originally Posted by sbinh

Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
CPU speed: 3208.70 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
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 8.297 ms.
Best time for 640K FFT length: 11.172 ms.
Best time for 768K FFT length: 13.760 ms.
Best time for 896K FFT length: 16.313 ms.
Best time for 1024K FFT length: 19.000 ms.
Best time for 1280K FFT length: 23.140 ms.
Best time for 1536K FFT length: 28.153 ms.
Best time for 1792K FFT length: 33.469 ms.
Best time for 2048K FFT length: 37.296 ms.
Best time for 2560K FFT length: 49.089 ms.
Best time for 3072K FFT length: 59.792 ms.
Best time for 3584K FFT length: 71.360 ms.
Best time for 4096K FFT length: 79.554 ms.
Best time for 58 bit trial factors: 3.486 ms.
Best time for 59 bit trial factors: 3.507 ms.
Best time for 60 bit trial factors: 3.493 ms.
Best time for 61 bit trial factors: 3.482 ms.
Best time for 62 bit trial factors: 5.555 ms.
Best time for 63 bit trial factors: 5.563 ms.
Best time for 64 bit trial factors: 5.326 ms.
Best time for 65 bit trial factors: 5.288 ms.
Best time for 66 bit trial factors: 5.291 ms.
Best time for 67 bit trial factors: 5.273 ms.

did you do that on air? is it quiet? would you recommend it?

2006-12-09, 01:37

Here are the results for my machine (no overclocking). The results are not impressive that's why I'm planning to switch to an Intel Core 2 Duo next year.

Intel(R) Pentium(R) D CPU 3.40GHz
CPU speed: 3399.87 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: 13.500 ms.
Best time for 640K FFT length: 17.186 ms.
Best time for 768K FFT length: 20.921 ms.
Best time for 896K FFT length: 25.462 ms.
Best time for 1024K FFT length: 29.276 ms.
Best time for 1280K FFT length: 36.013 ms.
Best time for 1536K FFT length: 43.570 ms.
Best time for 1792K FFT length: 52.451 ms.
Best time for 2048K FFT length: 58.088 ms.
Best time for 2560K FFT length: 77.431 ms.
Best time for 3072K FFT length: 93.461 ms.
Best time for 3584K FFT length: 112.150 ms.
Best time for 4096K FFT length: 126.115 ms.
Best time for 58 bit trial factors: 8.165 ms.
Best time for 59 bit trial factors: 8.213 ms.
Best time for 60 bit trial factors: 8.100 ms.
Best time for 61 bit trial factors: 8.169 ms.
Best time for 62 bit trial factors: 11.155 ms.
Best time for 63 bit trial factors: 11.135 ms.
Best time for 64 bit trial factors: 13.047 ms.
Best time for 65 bit trial factors: 13.030 ms.
Best time for 66 bit trial factors: 13.081 ms.
Best time for 67 bit trial factors: 12.946 ms.

JuanTutors · 2006-12-11, 23:38

I noticed the benchmark I sent to George is not on the benchmark page. (Pentium D 3.2 GHz, 2x2048 MB cache.) Is there a minimum number of benchmarks needed for them to be posted, or is there just a backlog of benchmarks?

Here it is for efficiency:

Intel(R) Pentium(R) D CPU 3.20GHz
CPU speed: 3199.81 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: 14.280 ms.
Best time for 640K FFT length: 18.188 ms.
Best time for 768K FFT length: 22.181 ms.
Best time for 896K FFT length: 26.926 ms.
Best time for 1024K FFT length: 31.017 ms.
Best time for 1280K FFT length: 38.033 ms.
Best time for 1536K FFT length: 46.102 ms.
Best time for 1792K FFT length: 55.249 ms.
Best time for 2048K FFT length: 61.473 ms.
Best time for 2560K FFT length: 81.787 ms.
Best time for 3072K FFT length: 98.537 ms.
Best time for 3584K FFT length: 118.084 ms.
Best time for 4096K FFT length: 131.676 ms.
Best time for 58 bit trial factors: 8.600 ms.
Best time for 59 bit trial factors: 8.663 ms.
Best time for 60 bit trial factors: 8.601 ms.
Best time for 61 bit trial factors: 8.636 ms.
Best time for 62 bit trial factors: 11.819 ms.
Best time for 63 bit trial factors: 11.842 ms.
Best time for 64 bit trial factors: 13.877 ms.
Best time for 65 bit trial factors: 13.769 ms.
Best time for 66 bit trial factors: 13.790 ms.
Best time for 67 bit trial factors: 13.754 ms.

rx7350 · 2006-12-28, 15:28

CPU: C2D E6700
MOBO: Asus P5W DH
RAM: Corsair XMS2 2Gb DDR2 800 @ 4-4-4-8
PSU: Antec TruePower 550W
Video: Gigabyte 7600GS 256Mb
HD: Two Western Digital 320Gb Raid0
Case: Thermaltake Armour
CPU cooler: Zalman 9700

Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
CPU speed: 3204.51 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: unknown
L1 cache line size: 64 bytes
L2 cache line size: unknown
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 4K FFT length: 0.040 ms.
Best time for 5K FFT length: 0.060 ms.
Best time for 6K FFT length: 0.071 ms.
Best time for 7K FFT length: 0.086 ms.
Best time for 8K FFT length: 0.089 ms.
Best time for 10K FFT length: 0.125 ms.
Best time for 12K FFT length: 0.151 ms.
Best time for 14K FFT length: 0.183 ms.
Best time for 16K FFT length: 0.192 ms.
Best time for 20K FFT length: 0.261 ms.
Best time for 24K FFT length: 0.318 ms.
Best time for 28K FFT length: 0.394 ms.
Best time for 32K FFT length: 0.410 ms.
Best time for 40K FFT length: 0.539 ms.
Best time for 48K FFT length: 0.655 ms.
Best time for 56K FFT length: 0.800 ms.
Best time for 64K FFT length: 0.855 ms.
Best time for 80K FFT length: 1.207 ms.
Best time for 96K FFT length: 1.466 ms.
Best time for 112K FFT length: 1.775 ms.
Best time for 128K FFT length: 1.874 ms.
Best time for 160K FFT length: 2.305 ms.
Best time for 192K FFT length: 2.834 ms.
Best time for 224K FFT length: 3.367 ms.
Best time for 256K FFT length: 3.739 ms.
Best time for 320K FFT length: 4.787 ms.
Best time for 384K FFT length: 5.900 ms.
Best time for 448K FFT length: 7.132 ms.
Best time for 512K FFT length: 8.026 ms.
Best time for 640K FFT length: 10.927 ms.
Best time for 768K FFT length: 13.493 ms.
Best time for 896K FFT length: 16.157 ms.
Best time for 1024K FFT length: 17.933 ms.
Best time for 1280K FFT length: 22.937 ms.
Best time for 1536K FFT length: 28.027 ms.
Best time for 1792K FFT length: 33.329 ms.
Best time for 2048K FFT length: 37.054 ms.
Best time for 2560K FFT length: 48.881 ms.
Best time for 3072K FFT length: 59.570 ms.
Best time for 3584K FFT length: 72.067 ms.
Best time for 4096K FFT length: 80.827 ms.
Best time for 5120K FFT length: 111.376 ms.
Best time for 6144K FFT length: 134.722 ms.
Best time for 7168K FFT length: 163.357 ms.
Best time for 8192K FFT length: 179.296 ms.
Best time for 10240K FFT length: 236.296 ms.
Best time for 12288K FFT length: 285.523 ms.
Best time for 14336K FFT length: 344.964 ms.
Best time for 16384K FFT length: 380.176 ms.
Best time for 20480K FFT length: 511.702 ms.
Best time for 24576K FFT length: 619.985 ms.
Best time for 28672K FFT length: 737.618 ms.
Best time for 32768K FFT length: 808.099 ms.
Best time for 58 bit trial factors: 3.567 ms.
Best time for 59 bit trial factors: 3.483 ms.
Best time for 60 bit trial factors: 3.461 ms.
Best time for 61 bit trial factors: 3.489 ms.
Best time for 62 bit trial factors: 5.569 ms.
Best time for 63 bit trial factors: 5.570 ms.
Best time for 64 bit trial factors: 5.337 ms.
Best time for 65 bit trial factors: 5.296 ms.
Best time for 66 bit trial factors: 5.299 ms.
Best time for 67 bit trial factors: 5.288 ms.

rx7350 · 2007-01-17, 22:49

CPU: C2D E6400
MOBO: Asus P5B
RAM: Corsair XMS2 1GB DDR2 800 @ 4-4-4-8
PSU: Thermaltake TR2 430W
Video: MSI GeForce 6200TC 128Mb
HD: Western Digital 40Gb SATA
Case: Caseless
CPU COOLER: Zalman 9700

Used to run Prime95 exclusively

Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
CPU speed: 2767.91 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
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 4K FFT length: 0.047 ms.
Best time for 5K FFT length: 0.069 ms.
Best time for 6K FFT length: 0.082 ms.
Best time for 7K FFT length: 0.100 ms.
Best time for 8K FFT length: 0.103 ms.
Best time for 10K FFT length: 0.144 ms.
Best time for 12K FFT length: 0.176 ms.
Best time for 14K FFT length: 0.213 ms.
Best time for 16K FFT length: 0.223 ms.
Best time for 20K FFT length: 0.303 ms.
Best time for 24K FFT length: 0.367 ms.
Best time for 28K FFT length: 0.455 ms.
Best time for 32K FFT length: 0.474 ms.
Best time for 40K FFT length: 0.624 ms.
Best time for 48K FFT length: 0.757 ms.
Best time for 56K FFT length: 0.925 ms.
Best time for 64K FFT length: 0.988 ms.
Best time for 80K FFT length: 1.395 ms.
Best time for 96K FFT length: 1.696 ms.
Best time for 112K FFT length: 2.055 ms.
Best time for 128K FFT length: 2.169 ms.
Best time for 160K FFT length: 2.660 ms.
Best time for 192K FFT length: 3.297 ms.
Best time for 224K FFT length: 3.958 ms.
Best time for 256K FFT length: 4.460 ms.
Best time for 320K FFT length: 5.824 ms.
Best time for 384K FFT length: 7.151 ms.
Best time for 448K FFT length: 8.519 ms.
Best time for 512K FFT length: 9.433 ms.
Best time for 640K FFT length: 12.619 ms.
Best time for 768K FFT length: 15.487 ms.
Best time for 896K FFT length: 18.344 ms.
Best time for 1024K FFT length: 21.482 ms.
Best time for 1280K FFT length: 25.962 ms.
Best time for 1536K FFT length: 31.676 ms.
Best time for 1792K FFT length: 37.658 ms.
Best time for 2048K FFT length: 41.877 ms.
Best time for 2560K FFT length: 55.258 ms.
Best time for 3072K FFT length: 67.397 ms.
Best time for 3584K FFT length: 80.402 ms.
Best time for 4096K FFT length: 89.895 ms.
Best time for 5120K FFT length: 115.666 ms.
Best time for 6144K FFT length: 139.674 ms.
Best time for 7168K FFT length: 169.854 ms.
Best time for 8192K FFT length: 186.919 ms.
Best time for 10240K FFT length: 247.274 ms.
Best time for 12288K FFT length: 298.476 ms.
Best time for 14336K FFT length: 362.188 ms.
Best time for 16384K FFT length: 399.156 ms.
Best time for 20480K FFT length: 552.640 ms.
Best time for 24576K FFT length: 677.268 ms.
Best time for 28672K FFT length: 813.740 ms.
Best time for 32768K FFT length: 896.315 ms.
Best time for 58 bit trial factors: 4.081 ms.
Best time for 59 bit trial factors: 4.074 ms.
Best time for 60 bit trial factors: 4.049 ms.
Best time for 61 bit trial factors: 4.031 ms.
Best time for 62 bit trial factors: 6.440 ms.
Best time for 63 bit trial factors: 6.444 ms.
Best time for 64 bit trial factors: 6.174 ms.
Best time for 65 bit trial factors: 6.130 ms.
Best time for 66 bit trial factors: 6.133 ms.
Best time for 67 bit trial factors: 6.107 ms.

rx7350 · 2007-02-04, 16:16

CPU: C2D E6400
MOBO: Asus P5B
RAM: Corsair XMS2 1GB DDR2 800 @ 4-4-4-8
PSU: Thermaltake TR2 430W
Video: MSI GeForce 6200TC 128Mb
HD: Western Digital 40Gb SATA
Case: Caseless
CPU COOLER: Zalman 9700
Vcore: 1.3375v
Vdimm: 1.9v
FSB Term V: Auto
PCIe: 100
PCI: locked at 33.33Mhz

Used to run Prime95 exclusively

Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
CPU speed: 3142.35 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
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 4K FFT length: 0.041 ms.
Best time for 5K FFT length: 0.061 ms.
Best time for 6K FFT length: 0.072 ms.
Best time for 7K FFT length: 0.088 ms.
Best time for 8K FFT length: 0.091 ms.
Best time for 10K FFT length: 0.127 ms.
Best time for 12K FFT length: 0.155 ms.
Best time for 14K FFT length: 0.188 ms.
Best time for 16K FFT length: 0.196 ms.
Best time for 20K FFT length: 0.267 ms.
Best time for 24K FFT length: 0.323 ms.
Best time for 28K FFT length: 0.401 ms.
Best time for 32K FFT length: 0.417 ms.
Best time for 40K FFT length: 0.549 ms.
Best time for 48K FFT length: 0.667 ms.
Best time for 56K FFT length: 0.815 ms.
Best time for 64K FFT length: 0.872 ms.
Best time for 80K FFT length: 1.228 ms.
Best time for 96K FFT length: 1.495 ms.
Best time for 112K FFT length: 1.808 ms.
Best time for 128K FFT length: 1.910 ms.
Best time for 160K FFT length: 2.343 ms.
Best time for 192K FFT length: 2.902 ms.
Best time for 224K FFT length: 3.493 ms.
Best time for 256K FFT length: 3.915 ms.
Best time for 320K FFT length: 5.137 ms.
Best time for 384K FFT length: 6.295 ms.
Best time for 448K FFT length: 7.512 ms.
Best time for 512K FFT length: 8.308 ms.
Best time for 640K FFT length: 11.116 ms.
Best time for 768K FFT length: 13.637 ms.
Best time for 896K FFT length: 16.157 ms.
Best time for 1024K FFT length: 18.904 ms.
Best time for 1280K FFT length: 22.867 ms.
Best time for 1536K FFT length: 27.870 ms.
Best time for 1792K FFT length: 33.149 ms.
Best time for 2048K FFT length: 36.866 ms.
Best time for 2560K FFT length: 48.650 ms.
Best time for 3072K FFT length: 59.342 ms.
Best time for 3584K FFT length: 70.720 ms.
Best time for 4096K FFT length: 79.093 ms.
Best time for 5120K FFT length: 101.850 ms.
Best time for 6144K FFT length: 123.126 ms.
Best time for 7168K FFT length: 149.578 ms.
Best time for 8192K FFT length: 164.274 ms.
Best time for 10240K FFT length: 218.012 ms.
Best time for 12288K FFT length: 262.872 ms.
Best time for 14336K FFT length: 319.075 ms.
Best time for 16384K FFT length: 351.283 ms.
Best time for 20480K FFT length: 487.030 ms.
Best time for 24576K FFT length: 595.417 ms.
Best time for 28672K FFT length: 715.499 ms.
Best time for 32768K FFT length: 787.277 ms.
Best time for 58 bit trial factors: 3.584 ms.
Best time for 59 bit trial factors: 3.589 ms.
Best time for 60 bit trial factors: 3.567 ms.
Best time for 61 bit trial factors: 3.555 ms.
Best time for 62 bit trial factors: 5.674 ms.
Best time for 63 bit trial factors: 5.678 ms.
Best time for 64 bit trial factors: 5.439 ms.
Best time for 65 bit trial factors: 5.400 ms.
Best time for 66 bit trial factors: 5.402 ms.
Best time for 67 bit trial factors: 5.380 ms.

E_tron · 2007-02-07, 00:21

got core 2?

Grant · 2007-02-07, 18:23

This is an Intel E6600 over clocked to 3.3 GHz and memory at 732 Hz
and with vCore at stock V of 1.275

[Wed Feb 07 09:57:09 2007]
Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
CPU speed: 3297.74 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: unknown
L1 cache line size: 64 bytes
L2 cache line size: unknown
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 7.739 ms.
Best time for 640K FFT length: 10.509 ms.
Best time for 768K FFT length: 12.951 ms.
Best time for 896K FFT length: 15.483 ms.
Best time for 1024K FFT length: 17.151 ms.
Best time for 1280K FFT length: 21.866 ms.
Best time for 1536K FFT length: 26.694 ms.
Best time for 1792K FFT length: 31.700 ms.
Best time for 2048K FFT length: 35.256 ms.
Best time for 2560K FFT length: 46.542 ms.
Best time for 3072K FFT length: 56.682 ms.
Best time for 3584K FFT length: 68.516 ms.
Best time for 4096K FFT length: 76.865 ms.
Best time for 58 bit trial factors: 3.388 ms.
Best time for 59 bit trial factors: 3.414 ms.
Best time for 60 bit trial factors: 3.400 ms.
Best time for 61 bit trial factors: 3.389 ms.
Best time for 62 bit trial factors: 5.406 ms.
Best time for 63 bit trial factors: 5.414 ms.
Best time for 64 bit trial factors: 5.184 ms.
Best time for 65 bit trial factors: 5.146 ms.
Best time for 66 bit trial factors: 5.149 ms.
Best time for 67 bit trial factors: 5.127 ms.

2007-02-08, 05:20

Results for Core2 T7200 with 4 MB L2 Cache

Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz
CPU speed: 1994.94 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: unknown
L1 cache line size: 64 bytes
L2 cache line size: unknown
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 12.875 ms.
Best time for 640K FFT length: 17.600 ms.
Best time for 768K FFT length: 21.749 ms.
Best time for 896K FFT length: 26.048 ms.
Best time for 1024K FFT length: 28.925 ms.
Best time for 1280K FFT length: 37.023 ms.
Best time for 1536K FFT length: 45.169 ms.
Best time for 1792K FFT length: 53.816 ms.
Best time for 2048K FFT length: 60.566 ms.
Best time for 2560K FFT length: 79.413 ms.
Best time for 3072K FFT length: 98.036 ms.
Best time for 3584K FFT length: 119.248 ms.
Best time for 4096K FFT length: 133.301 ms.
Best time for 58 bit trial factors: 5.649 ms.
Best time for 59 bit trial factors: 5.651 ms.
Best time for 60 bit trial factors: 5.636 ms.
Best time for 61 bit trial factors: 5.603 ms.
Best time for 62 bit trial factors: 8.950 ms.
Best time for 63 bit trial factors: 8.962 ms.
Best time for 64 bit trial factors: 8.570 ms.
Best time for 65 bit trial factors: 8.536 ms.
Best time for 66 bit trial factors: 8.513 ms.
Best time for 67 bit trial factors: 8.479 ms.

Andi47 · 2007-02-10, 10:52

My Core 2 Duo Laptop (second CPU idle):

Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz
CPU speed: 2006.46 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: unknown
L1 cache line size: 64 bytes
L2 cache line size: unknown
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 512K FFT length: 12.736 ms.
Best time for 640K FFT length: 17.281 ms.
Best time for 768K FFT length: 21.267 ms.
Best time for 896K FFT length: 25.433 ms.
Best time for 1024K FFT length: 28.199 ms.
Best time for 1280K FFT length: 35.964 ms.
Best time for 1536K FFT length: 43.917 ms.
Best time for 1792K FFT length: 52.176 ms.
Best time for 2048K FFT length: 57.943 ms.
Best time for 2560K FFT length: 76.407 ms.
Best time for 3072K FFT length: 93.230 ms.
Best time for 3584K FFT length: 112.738 ms.
Best time for 4096K FFT length: 126.041 ms.
Best time for 58 bit trial factors: 5.571 ms.
Best time for 59 bit trial factors: 5.602 ms.
Best time for 60 bit trial factors: 5.605 ms.
Best time for 61 bit trial factors: 5.573 ms.
Best time for 62 bit trial factors: 8.889 ms.
Best time for 63 bit trial factors: 8.896 ms.
Best time for 64 bit trial factors: 8.521 ms.
Best time for 65 bit trial factors: 8.461 ms.
Best time for 66 bit trial factors: 8.464 ms.
Best time for 67 bit trial factors: 8.430 ms.

for LL, this is faster than my Pentium 4 @ 3,4 GHz! (see Post #201)

S485122 · 2007-02-10, 11:43

With the current dual and quad cores it does not make a lot of difference when benchmarking if the other cores are idle or benchmarking as well.

The memory bottleneck becomes apparent when doing "real" work.

With my QuadCore running 4 benchmarks together I had best iteration times equivalent to those of a dual core. But when running real work the times went up by 25% (all cores busy with 1536K FFT exponents.) This is on a P965 based board. With a NVIDIA 650 SLI board the memory bottleneck is even more obvious : the iteration times go up by more than 120% running four primality tests instead of one !!!

In all reviews the memory benchmarks are done using one core only, this is why AnandTech and others come to the conclusion that 400 MHz memory is optimal for Core 2 Duos and even Core 2 Quads. In reality that kind of memory speed is not sufficient. The Pentium D9xx did not overload the memory, but they reached the limit. This will become worse when the FFT sizes will grow further.

More realistic benchmarks can be obtained by loading all other cores with Primality tests. Another thing would be to have the program give AVERAGE iteration times instead of Best iteration times.

The thing to remember is : don't expect the current QuadCores to perform like two dualcores. And most important don't go for a NVIDIA chipset with Core 2 Duo or quads.

Jacob

Cruelty · 2007-02-11, 22:59

...or just stick to one Prime95 test + run 3 instances of LLR @ 128k FFT length - the performance hit per core is 1-3%= negligible (tested on nV 650i board)

2006-09-11, 16:55	#255
S485122 "Jacob" Sep 2006 Brussels, Belgium 2·3²·5·19 Posts	D830 I achieved this on a D830 whithout fiddling a lot. But now I am running at a more conservative 3450 MHz : a temperature rising to 80 °C is not good to keep for long ;-) Even at a moderate 3450 MHZ more than 150W has to be transfered away via the cooler. I think about swapping the D830 for a D950 (with the coming of the Core 2 Duos they are cheapper.) The main incentive is energy conservation : the D830 gobbles electricity to change it to heat and as a byproduct you get some calculations, the D950 has a 95 W thermal design compared to the 130 W of the D830. IMO the performance should be expressed by W. Then it is possibly the laptops that will be top of the mark. Intel(R) Pentium(R) D CPU 3.00GHz CPU speed: 3831.98 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: 12.331 ms. Best time for 640K FFT length: 15.652 ms. Best time for 768K FFT length: 19.051 ms. Best time for 896K FFT length: 23.156 ms. Best time for 1024K FFT length: 26.556 ms. Best time for 1280K FFT length: 32.667 ms. Best time for 1536K FFT length: 39.548 ms. Best time for 1792K FFT length: 47.307 ms. Best time for 2048K FFT length: 52.848 ms. Best time for 2560K FFT length: 69.977 ms. Best time for 3072K FFT length: 84.469 ms. Best time for 3584K FFT length: 101.152 ms. Best time for 4096K FFT length: 113.266 ms. Best time for 58 bit trial factors: 7.267 ms. Best time for 59 bit trial factors: 7.266 ms. Best time for 60 bit trial factors: 7.232 ms. Best time for 61 bit trial factors: 7.245 ms. Best time for 62 bit trial factors: 9.951 ms. Best time for 63 bit trial factors: 9.921 ms. Best time for 64 bit trial factors: 11.646 ms. Best time for 65 bit trial factors: 11.602 ms. Best time for 66 bit trial factors: 11.562 ms. Best time for 67 bit trial factors: 11.528 ms.

2006-09-26, 07:08	#257
Ethan (EO) "Ethan O'Connor" Oct 2002 GIMPS since Jan 1996 2²×23 Posts	E6300 Overclock -- 4096k @ 75ms for $200! Wow -- I haven't dabbled much in overclocking since the Celeron 300A to 450Mhz overclock was popular. Before that it was a bevy of 486-75s that I ran at 100 (man, they kicked butt at assignments in the ~90000 range :P) but I had to give it a try with my new Core 2 Duo E6300. This is a CPU that can be had for around $200 these days. I stuck it on a Gigabyte P965-DS3 and added 2x512MB of Patriot DDR2-800 memory. Total cost under $500 for the CPU, memory, and motherboard! Anyway, here're results running with the memory at 950 (475), running 4-4-4-12! This puts the CPU at around 3330Mhz, compared to stock 1.86Mhz. This is all with plain old heatsink + fan cooling, at default voltage on the CPU, but 2.0V on the DDR2. Even with only 2MB of L2 cache, the chip does very well. 60 minutes of torture testing have completed so far without error. Is using overclocked machines for doublechecking assignments only considered okay these days? Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz CPU speed: 3324.79 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 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 7.892 ms. Best time for 640K FFT length: 10.524 ms. Best time for 768K FFT length: 12.935 ms. Best time for 896K FFT length: 15.336 ms. Best time for 1024K FFT length: 17.735 ms. Best time for 1280K FFT length: 21.791 ms. Best time for 1536K FFT length: 26.581 ms. Best time for 1792K FFT length: 31.648 ms. Best time for 2048K FFT length: 35.131 ms. Best time for 2560K FFT length: 46.543 ms. Best time for 3072K FFT length: 56.683 ms. Best time for 3584K FFT length: 67.478 ms. Best time for 4096K FFT length: 75.717 ms. Best time for 58 bit trial factors: 3.385 ms. Best time for 59 bit trial factors: 3.387 ms. Best time for 60 bit trial factors: 3.382 ms. Best time for 61 bit trial factors: 3.369 ms. Best time for 62 bit trial factors: 5.361 ms. Best time for 63 bit trial factors: 5.369 ms. Best time for 64 bit trial factors: 5.142 ms. Best time for 65 bit trial factors: 5.122 ms. Best time for 66 bit trial factors: 5.113 ms. Best time for 67 bit trial factors: 5.098 ms.

2006-12-11, 23:38	#266
JuanTutors Mar 2004 540₁₀ Posts	Benchmark not on mersenne.org I noticed the benchmark I sent to George is not on the benchmark page. (Pentium D 3.2 GHz, 2x2048 MB cache.) Is there a minimum number of benchmarks needed for them to be posted, or is there just a backlog of benchmarks? Here it is for efficiency: Intel(R) Pentium(R) D CPU 3.20GHz CPU speed: 3199.81 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: 14.280 ms. Best time for 640K FFT length: 18.188 ms. Best time for 768K FFT length: 22.181 ms. Best time for 896K FFT length: 26.926 ms. Best time for 1024K FFT length: 31.017 ms. Best time for 1280K FFT length: 38.033 ms. Best time for 1536K FFT length: 46.102 ms. Best time for 1792K FFT length: 55.249 ms. Best time for 2048K FFT length: 61.473 ms. Best time for 2560K FFT length: 81.787 ms. Best time for 3072K FFT length: 98.537 ms. Best time for 3584K FFT length: 118.084 ms. Best time for 4096K FFT length: 131.676 ms. Best time for 58 bit trial factors: 8.600 ms. Best time for 59 bit trial factors: 8.663 ms. Best time for 60 bit trial factors: 8.601 ms. Best time for 61 bit trial factors: 8.636 ms. Best time for 62 bit trial factors: 11.819 ms. Best time for 63 bit trial factors: 11.842 ms. Best time for 64 bit trial factors: 13.877 ms. Best time for 65 bit trial factors: 13.769 ms. Best time for 66 bit trial factors: 13.790 ms. Best time for 67 bit trial factors: 13.754 ms.

2007-02-04, 16:16	#269
rx7350 Feb 2006 AR, US 2⁴×3² Posts	Updated benchmarks after further 'ocing CPU: C2D E6400 MOBO: Asus P5B RAM: Corsair XMS2 1GB DDR2 800 @ 4-4-4-8 PSU: Thermaltake TR2 430W Video: MSI GeForce 6200TC 128Mb HD: Western Digital 40Gb SATA Case: Caseless CPU COOLER: Zalman 9700 Vcore: 1.3375v Vdimm: 1.9v FSB Term V: Auto PCIe: 100 PCI: locked at 33.33Mhz Used to run Prime95 exclusively Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz CPU speed: 3142.35 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 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 4K FFT length: 0.041 ms. Best time for 5K FFT length: 0.061 ms. Best time for 6K FFT length: 0.072 ms. Best time for 7K FFT length: 0.088 ms. Best time for 8K FFT length: 0.091 ms. Best time for 10K FFT length: 0.127 ms. Best time for 12K FFT length: 0.155 ms. Best time for 14K FFT length: 0.188 ms. Best time for 16K FFT length: 0.196 ms. Best time for 20K FFT length: 0.267 ms. Best time for 24K FFT length: 0.323 ms. Best time for 28K FFT length: 0.401 ms. Best time for 32K FFT length: 0.417 ms. Best time for 40K FFT length: 0.549 ms. Best time for 48K FFT length: 0.667 ms. Best time for 56K FFT length: 0.815 ms. Best time for 64K FFT length: 0.872 ms. Best time for 80K FFT length: 1.228 ms. Best time for 96K FFT length: 1.495 ms. Best time for 112K FFT length: 1.808 ms. Best time for 128K FFT length: 1.910 ms. Best time for 160K FFT length: 2.343 ms. Best time for 192K FFT length: 2.902 ms. Best time for 224K FFT length: 3.493 ms. Best time for 256K FFT length: 3.915 ms. Best time for 320K FFT length: 5.137 ms. Best time for 384K FFT length: 6.295 ms. Best time for 448K FFT length: 7.512 ms. Best time for 512K FFT length: 8.308 ms. Best time for 640K FFT length: 11.116 ms. Best time for 768K FFT length: 13.637 ms. Best time for 896K FFT length: 16.157 ms. Best time for 1024K FFT length: 18.904 ms. Best time for 1280K FFT length: 22.867 ms. Best time for 1536K FFT length: 27.870 ms. Best time for 1792K FFT length: 33.149 ms. Best time for 2048K FFT length: 36.866 ms. Best time for 2560K FFT length: 48.650 ms. Best time for 3072K FFT length: 59.342 ms. Best time for 3584K FFT length: 70.720 ms. Best time for 4096K FFT length: 79.093 ms. Best time for 5120K FFT length: 101.850 ms. Best time for 6144K FFT length: 123.126 ms. Best time for 7168K FFT length: 149.578 ms. Best time for 8192K FFT length: 164.274 ms. Best time for 10240K FFT length: 218.012 ms. Best time for 12288K FFT length: 262.872 ms. Best time for 14336K FFT length: 319.075 ms. Best time for 16384K FFT length: 351.283 ms. Best time for 20480K FFT length: 487.030 ms. Best time for 24576K FFT length: 595.417 ms. Best time for 28672K FFT length: 715.499 ms. Best time for 32768K FFT length: 787.277 ms. Best time for 58 bit trial factors: 3.584 ms. Best time for 59 bit trial factors: 3.589 ms. Best time for 60 bit trial factors: 3.567 ms. Best time for 61 bit trial factors: 3.555 ms. Best time for 62 bit trial factors: 5.674 ms. Best time for 63 bit trial factors: 5.678 ms. Best time for 64 bit trial factors: 5.439 ms. Best time for 65 bit trial factors: 5.400 ms. Best time for 66 bit trial factors: 5.402 ms. Best time for 67 bit trial factors: 5.380 ms.

2007-02-10, 10:52	#273
Andi47 Oct 2004 Austria 2·17·73 Posts	My Core 2 Duo Laptop (second CPU idle): Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz CPU speed: 2006.46 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 32 KB L2 cache size: unknown L1 cache line size: 64 bytes L2 cache line size: unknown Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 12.736 ms. Best time for 640K FFT length: 17.281 ms. Best time for 768K FFT length: 21.267 ms. Best time for 896K FFT length: 25.433 ms. Best time for 1024K FFT length: 28.199 ms. Best time for 1280K FFT length: 35.964 ms. Best time for 1536K FFT length: 43.917 ms. Best time for 1792K FFT length: 52.176 ms. Best time for 2048K FFT length: 57.943 ms. Best time for 2560K FFT length: 76.407 ms. Best time for 3072K FFT length: 93.230 ms. Best time for 3584K FFT length: 112.738 ms. Best time for 4096K FFT length: 126.041 ms. Best time for 58 bit trial factors: 5.571 ms. Best time for 59 bit trial factors: 5.602 ms. Best time for 60 bit trial factors: 5.605 ms. Best time for 61 bit trial factors: 5.573 ms. Best time for 62 bit trial factors: 8.889 ms. Best time for 63 bit trial factors: 8.896 ms. Best time for 64 bit trial factors: 8.521 ms. Best time for 65 bit trial factors: 8.461 ms. Best time for 66 bit trial factors: 8.464 ms. Best time for 67 bit trial factors: 8.430 ms. for LL, this is faster than my Pentium 4 @ 3,4 GHz! (see Post #201) Last fiddled with by Andi47 on 2007-02-10 at 10:52

2006-09-05, 20:17	#253
Cruelty May 2005 658₁₆ Posts	I have verified it once more, however this time I was not able to reproduce the difference I have observed before - the differences are less than 1% actually. This makes me think what could actually happened before

2006-09-11, 04:50	#254
nucleon Mar 2003 Melbourne 5·103 Posts	Some overclocked scores. Note: The machine at this speed, is definately NOT stable. I report this for pure curiousity. Core2 Duo E6600 @ 9.0x400MHZ, ram is 5-5-5-15@800MHz. Motherboard was gigabyte DQ6. CPU voltage in bios was set to 1.4375V. Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz CPU speed: 3599.83 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 32 KB L2 cache size: unknown L1 cache line size: 64 bytes L2 cache line size: unknown Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 7.170 ms. Best time for 640K FFT length: 9.797 ms. Best time for 768K FFT length: 12.102 ms. Best time for 896K FFT length: 14.519 ms. Best time for 1024K FFT length: 16.154 ms. Best time for 1280K FFT length: 20.645 ms. Best time for 1536K FFT length: 25.202 ms. Best time for 1792K FFT length: 30.008 ms. Best time for 2048K FFT length: 33.477 ms. Best time for 2560K FFT length: 44.055 ms. Best time for 3072K FFT length: 53.719 ms. Best time for 3584K FFT length: 65.128 ms. Best time for 4096K FFT length: 73.232 ms. Best time for 58 bit trial factors: 3.118 ms. Best time for 59 bit trial factors: 3.108 ms. Best time for 60 bit trial factors: 3.087 ms. Best time for 61 bit trial factors: 3.104 ms. Best time for 62 bit trial factors: 4.964 ms. Best time for 63 bit trial factors: 4.958 ms. Best time for 64 bit trial factors: 4.748 ms. Best time for 65 bit trial factors: 4.715 ms. Best time for 66 bit trial factors: 4.716 ms. Best time for 67 bit trial factors: 4.707 ms. And now for a more stable overclock: Same motherboard/cpu, cpu set to 9.0x366, ram set to 5-5-5-15@732GHz. CPU voltage set to 1.4V in bios. Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz CPU speed: 3293.81 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 32 KB L2 cache size: unknown L1 cache line size: 64 bytes L2 cache line size: unknown Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 7.844 ms. Best time for 640K FFT length: 10.697 ms. Best time for 768K FFT length: 13.249 ms. Best time for 896K FFT length: 15.878 ms. Best time for 1024K FFT length: 17.651 ms. Best time for 1280K FFT length: 22.570 ms. Best time for 1536K FFT length: 27.498 ms. Best time for 1792K FFT length: 32.758 ms. Best time for 2048K FFT length: 36.457 ms. Best time for 2560K FFT length: 48.145 ms. Best time for 3072K FFT length: 58.777 ms. Best time for 3584K FFT length: 70.937 ms. Best time for 4096K FFT length: 79.638 ms. Best time for 58 bit trial factors: 3.392 ms. Best time for 59 bit trial factors: 3.411 ms. Best time for 60 bit trial factors: 3.403 ms. Best time for 61 bit trial factors: 3.392 ms. Best time for 62 bit trial factors: 5.412 ms. Best time for 63 bit trial factors: 5.418 ms. Best time for 64 bit trial factors: 5.189 ms. Best time for 65 bit trial factors: 5.151 ms. Best time for 66 bit trial factors: 5.155 ms. Best time for 67 bit trial factors: 5.135 ms. No wonder Intel is v.happy with the core2 duo range. Seems to be plenty of life in the platform. -- Craig

2006-09-27, 22:03	#258
Xyzzy "Mike" Aug 2002 5×17×97 Posts	Thinkpad R60 Genuine Intel(R) CPU T2400 @ 1.83GHz CPU speed: 1828.76 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 24.14, RdtscTiming=1 Best time for 4K FFT length: 0.171 ms. Best time for 5K FFT length: 0.234 ms. Best time for 6K FFT length: 0.286 ms. Best time for 7K FFT length: 0.353 ms. Best time for 8K FFT length: 0.374 ms. Best time for 10K FFT length: 0.511 ms. Best time for 12K FFT length: 0.625 ms. Best time for 14K FFT length: 0.757 ms. Best time for 16K FFT length: 0.814 ms. Best time for 20K FFT length: 1.077 ms. Best time for 24K FFT length: 1.313 ms. Best time for 28K FFT length: 2.204 ms. Best time for 32K FFT length: 2.381 ms. Best time for 40K FFT length: 2.347 ms. Best time for 48K FFT length: 2.863 ms. Best time for 56K FFT length: 6.336 ms. Best time for 64K FFT length: 6.940 ms. Best time for 80K FFT length: 5.000 ms. Best time for 96K FFT length: 6.095 ms. Best time for 112K FFT length: 7.349 ms. Best time for 128K FFT length: 7.987 ms. Best time for 160K FFT length: 10.126 ms. Best time for 192K FFT length: 12.452 ms. Best time for 224K FFT length: 15.024 ms. Best time for 256K FFT length: 16.575 ms. Best time for 320K FFT length: 21.302 ms. Best time for 384K FFT length: 26.015 ms. Best time for 448K FFT length: 31.459 ms. Best time for 512K FFT length: 34.800 ms. Best time for 640K FFT length: 45.330 ms. Best time for 768K FFT length: 55.600 ms. Best time for 896K FFT length: 67.050 ms. Best time for 1024K FFT length: 73.663 ms. Best time for 1280K FFT length: 93.992 ms. Best time for 1536K FFT length: 165.700 ms. Best time for 1792K FFT length: 138.377 ms. Best time for 2048K FFT length: 152.803 ms. Best time for 2560K FFT length: 198.646 ms. Best time for 3072K FFT length: 242.798 ms. Best time for 3584K FFT length: 297.018 ms. Best time for 4096K FFT length: 322.378 ms. Best time for 5120K FFT length: 416.810 ms. Best time for 6144K FFT length: 508.040 ms. Best time for 7168K FFT length: 605.520 ms. Best time for 8192K FFT length: 677.469 ms. Best time for 10240K FFT length: 871.545 ms. Best time for 12288K FFT length: 1066.386 ms. Best time for 14336K FFT length: 1293.276 ms. Best time for 16384K FFT length: 1447.221 ms. Best time for 20480K FFT length: 1893.942 ms. Best time for 24576K FFT length: 2593.825 ms. Best time for 28672K FFT length: 2759.387 ms. Best time for 32768K FFT length: 3092.036 ms. Best time for 58 bit trial factors: 7.248 ms. Best time for 59 bit trial factors: 7.270 ms. Best time for 60 bit trial factors: 7.245 ms. Best time for 61 bit trial factors: 7.166 ms. Best time for 62 bit trial factors: 10.161 ms. Best time for 63 bit trial factors: 10.211 ms. Best time for 64 bit trial factors: 17.443 ms. Best time for 65 bit trial factors: 17.342 ms. Best time for 66 bit trial factors: 17.348 ms. Best time for 67 bit trial factors: 17.307 ms.

2006-10-04, 03:58	#261
sbinh Sep 2006 5 Posts	Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz CPU speed: 3208.70 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 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 8.297 ms. Best time for 640K FFT length: 11.172 ms. Best time for 768K FFT length: 13.760 ms. Best time for 896K FFT length: 16.313 ms. Best time for 1024K FFT length: 19.000 ms. Best time for 1280K FFT length: 23.140 ms. Best time for 1536K FFT length: 28.153 ms. Best time for 1792K FFT length: 33.469 ms. Best time for 2048K FFT length: 37.296 ms. Best time for 2560K FFT length: 49.089 ms. Best time for 3072K FFT length: 59.792 ms. Best time for 3584K FFT length: 71.360 ms. Best time for 4096K FFT length: 79.554 ms. Best time for 58 bit trial factors: 3.486 ms. Best time for 59 bit trial factors: 3.507 ms. Best time for 60 bit trial factors: 3.493 ms. Best time for 61 bit trial factors: 3.482 ms. Best time for 62 bit trial factors: 5.555 ms. Best time for 63 bit trial factors: 5.563 ms. Best time for 64 bit trial factors: 5.326 ms. Best time for 65 bit trial factors: 5.288 ms. Best time for 66 bit trial factors: 5.291 ms. Best time for 67 bit trial factors: 5.273 ms.

2006-10-05, 05:41	#262
sbinh Sep 2006 5 Posts	New one: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz CPU speed: 3199.98 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 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 8.147 ms. Best time for 640K FFT length: 10.868 ms. Best time for 768K FFT length: 13.311 ms. Best time for 896K FFT length: 15.784 ms. Best time for 1024K FFT length: 18.369 ms. Best time for 1280K FFT length: 22.397 ms. Best time for 1536K FFT length: 27.284 ms. Best time for 1792K FFT length: 32.427 ms. Best time for 2048K FFT length: 36.093 ms. Best time for 2560K FFT length: 47.589 ms. Best time for 3072K FFT length: 57.954 ms. Best time for 3584K FFT length: 69.026 ms. Best time for 4096K FFT length: 77.254 ms. Best time for 58 bit trial factors: 3.475 ms. Best time for 59 bit trial factors: 3.517 ms. Best time for 60 bit trial factors: 3.502 ms. Best time for 61 bit trial factors: 3.493 ms. Best time for 62 bit trial factors: 5.572 ms. Best time for 63 bit trial factors: 5.578 ms. Best time for 64 bit trial factors: 5.341 ms. Best time for 65 bit trial factors: 5.303 ms. Best time for 66 bit trial factors: 5.306 ms. Best time for 67 bit trial factors: 5.283 ms.

2006-12-06, 20:34	#263
Uncwilly 6809 > 6502 """"""""""""""""""" Aug 2003 101×103 Posts 3×17×193 Posts	Here are the results from a machine that has given me fits. At times it is good, at times it slows down. on a 1024K FFT number it was turning out 0.252-0.273 iterations Mersenne.org says this machine should turn out 0.271 After stopping the test, running the bench, restarting, it is now running 0.33's Sometimes I can exit p95 and restart to drop it back down, but often I have to reboot to get it back down. Intel(R) Pentium(R) III processor CPU speed: 799.86 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 23.5, RdtscTiming=1 Best time for 384K FFT length: 101.627 ms. Best time for 448K FFT length: 143.503 ms. Best time for 512K FFT length: 122.174 ms. Best time for 640K FFT length: 157.036 ms. Best time for 768K FFT length: 231.036 ms. Best time for 896K FFT length: 251.145 ms. Best time for 1024K FFT length: 287.802 ms. Best time for 1280K FFT length: 403.974 ms. Best time for 1536K FFT length: 503.238 ms. Best time for 1792K FFT length: 603.771 ms. Best time for 2048K FFT length: 684.936 ms. Best time for 2560K FFT length: 966.430 ms. Best time for 3072K FFT length: 1245.202 ms. Best time for 3584K FFT length: 1501.162 ms. Best time for 4096K FFT length: 1702.090 ms.

2006-12-09, 01:37	#265
cio 7·1,289 Posts	Here are the results for my machine (no overclocking). The results are not impressive that's why I'm planning to switch to an Intel Core 2 Duo next year. Intel(R) Pentium(R) D CPU 3.40GHz CPU speed: 3399.87 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: 13.500 ms. Best time for 640K FFT length: 17.186 ms. Best time for 768K FFT length: 20.921 ms. Best time for 896K FFT length: 25.462 ms. Best time for 1024K FFT length: 29.276 ms. Best time for 1280K FFT length: 36.013 ms. Best time for 1536K FFT length: 43.570 ms. Best time for 1792K FFT length: 52.451 ms. Best time for 2048K FFT length: 58.088 ms. Best time for 2560K FFT length: 77.431 ms. Best time for 3072K FFT length: 93.461 ms. Best time for 3584K FFT length: 112.150 ms. Best time for 4096K FFT length: 126.115 ms. Best time for 58 bit trial factors: 8.165 ms. Best time for 59 bit trial factors: 8.213 ms. Best time for 60 bit trial factors: 8.100 ms. Best time for 61 bit trial factors: 8.169 ms. Best time for 62 bit trial factors: 11.155 ms. Best time for 63 bit trial factors: 11.135 ms. Best time for 64 bit trial factors: 13.047 ms. Best time for 65 bit trial factors: 13.030 ms. Best time for 66 bit trial factors: 13.081 ms. Best time for 67 bit trial factors: 12.946 ms.

2006-12-28, 15:28	#267
rx7350 Feb 2006 AR, US 2⁴×3² Posts	CPU: C2D E6700 MOBO: Asus P5W DH RAM: Corsair XMS2 2Gb DDR2 800 @ 4-4-4-8 PSU: Antec TruePower 550W Video: Gigabyte 7600GS 256Mb HD: Two Western Digital 320Gb Raid0 Case: Thermaltake Armour CPU cooler: Zalman 9700 Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz CPU speed: 3204.51 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 32 KB L2 cache size: unknown L1 cache line size: 64 bytes L2 cache line size: unknown Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 4K FFT length: 0.040 ms. Best time for 5K FFT length: 0.060 ms. Best time for 6K FFT length: 0.071 ms. Best time for 7K FFT length: 0.086 ms. Best time for 8K FFT length: 0.089 ms. Best time for 10K FFT length: 0.125 ms. Best time for 12K FFT length: 0.151 ms. Best time for 14K FFT length: 0.183 ms. Best time for 16K FFT length: 0.192 ms. Best time for 20K FFT length: 0.261 ms. Best time for 24K FFT length: 0.318 ms. Best time for 28K FFT length: 0.394 ms. Best time for 32K FFT length: 0.410 ms. Best time for 40K FFT length: 0.539 ms. Best time for 48K FFT length: 0.655 ms. Best time for 56K FFT length: 0.800 ms. Best time for 64K FFT length: 0.855 ms. Best time for 80K FFT length: 1.207 ms. Best time for 96K FFT length: 1.466 ms. Best time for 112K FFT length: 1.775 ms. Best time for 128K FFT length: 1.874 ms. Best time for 160K FFT length: 2.305 ms. Best time for 192K FFT length: 2.834 ms. Best time for 224K FFT length: 3.367 ms. Best time for 256K FFT length: 3.739 ms. Best time for 320K FFT length: 4.787 ms. Best time for 384K FFT length: 5.900 ms. Best time for 448K FFT length: 7.132 ms. Best time for 512K FFT length: 8.026 ms. Best time for 640K FFT length: 10.927 ms. Best time for 768K FFT length: 13.493 ms. Best time for 896K FFT length: 16.157 ms. Best time for 1024K FFT length: 17.933 ms. Best time for 1280K FFT length: 22.937 ms. Best time for 1536K FFT length: 28.027 ms. Best time for 1792K FFT length: 33.329 ms. Best time for 2048K FFT length: 37.054 ms. Best time for 2560K FFT length: 48.881 ms. Best time for 3072K FFT length: 59.570 ms. Best time for 3584K FFT length: 72.067 ms. Best time for 4096K FFT length: 80.827 ms. Best time for 5120K FFT length: 111.376 ms. Best time for 6144K FFT length: 134.722 ms. Best time for 7168K FFT length: 163.357 ms. Best time for 8192K FFT length: 179.296 ms. Best time for 10240K FFT length: 236.296 ms. Best time for 12288K FFT length: 285.523 ms. Best time for 14336K FFT length: 344.964 ms. Best time for 16384K FFT length: 380.176 ms. Best time for 20480K FFT length: 511.702 ms. Best time for 24576K FFT length: 619.985 ms. Best time for 28672K FFT length: 737.618 ms. Best time for 32768K FFT length: 808.099 ms. Best time for 58 bit trial factors: 3.567 ms. Best time for 59 bit trial factors: 3.483 ms. Best time for 60 bit trial factors: 3.461 ms. Best time for 61 bit trial factors: 3.489 ms. Best time for 62 bit trial factors: 5.569 ms. Best time for 63 bit trial factors: 5.570 ms. Best time for 64 bit trial factors: 5.337 ms. Best time for 65 bit trial factors: 5.296 ms. Best time for 66 bit trial factors: 5.299 ms. Best time for 67 bit trial factors: 5.288 ms.

2007-01-17, 22:49	#268
rx7350 Feb 2006 AR, US 144₁₀ Posts	CPU: C2D E6400 MOBO: Asus P5B RAM: Corsair XMS2 1GB DDR2 800 @ 4-4-4-8 PSU: Thermaltake TR2 430W Video: MSI GeForce 6200TC 128Mb HD: Western Digital 40Gb SATA Case: Caseless CPU COOLER: Zalman 9700 Used to run Prime95 exclusively Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz CPU speed: 2767.91 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 Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 4K FFT length: 0.047 ms. Best time for 5K FFT length: 0.069 ms. Best time for 6K FFT length: 0.082 ms. Best time for 7K FFT length: 0.100 ms. Best time for 8K FFT length: 0.103 ms. Best time for 10K FFT length: 0.144 ms. Best time for 12K FFT length: 0.176 ms. Best time for 14K FFT length: 0.213 ms. Best time for 16K FFT length: 0.223 ms. Best time for 20K FFT length: 0.303 ms. Best time for 24K FFT length: 0.367 ms. Best time for 28K FFT length: 0.455 ms. Best time for 32K FFT length: 0.474 ms. Best time for 40K FFT length: 0.624 ms. Best time for 48K FFT length: 0.757 ms. Best time for 56K FFT length: 0.925 ms. Best time for 64K FFT length: 0.988 ms. Best time for 80K FFT length: 1.395 ms. Best time for 96K FFT length: 1.696 ms. Best time for 112K FFT length: 2.055 ms. Best time for 128K FFT length: 2.169 ms. Best time for 160K FFT length: 2.660 ms. Best time for 192K FFT length: 3.297 ms. Best time for 224K FFT length: 3.958 ms. Best time for 256K FFT length: 4.460 ms. Best time for 320K FFT length: 5.824 ms. Best time for 384K FFT length: 7.151 ms. Best time for 448K FFT length: 8.519 ms. Best time for 512K FFT length: 9.433 ms. Best time for 640K FFT length: 12.619 ms. Best time for 768K FFT length: 15.487 ms. Best time for 896K FFT length: 18.344 ms. Best time for 1024K FFT length: 21.482 ms. Best time for 1280K FFT length: 25.962 ms. Best time for 1536K FFT length: 31.676 ms. Best time for 1792K FFT length: 37.658 ms. Best time for 2048K FFT length: 41.877 ms. Best time for 2560K FFT length: 55.258 ms. Best time for 3072K FFT length: 67.397 ms. Best time for 3584K FFT length: 80.402 ms. Best time for 4096K FFT length: 89.895 ms. Best time for 5120K FFT length: 115.666 ms. Best time for 6144K FFT length: 139.674 ms. Best time for 7168K FFT length: 169.854 ms. Best time for 8192K FFT length: 186.919 ms. Best time for 10240K FFT length: 247.274 ms. Best time for 12288K FFT length: 298.476 ms. Best time for 14336K FFT length: 362.188 ms. Best time for 16384K FFT length: 399.156 ms. Best time for 20480K FFT length: 552.640 ms. Best time for 24576K FFT length: 677.268 ms. Best time for 28672K FFT length: 813.740 ms. Best time for 32768K FFT length: 896.315 ms. Best time for 58 bit trial factors: 4.081 ms. Best time for 59 bit trial factors: 4.074 ms. Best time for 60 bit trial factors: 4.049 ms. Best time for 61 bit trial factors: 4.031 ms. Best time for 62 bit trial factors: 6.440 ms. Best time for 63 bit trial factors: 6.444 ms. Best time for 64 bit trial factors: 6.174 ms. Best time for 65 bit trial factors: 6.130 ms. Best time for 66 bit trial factors: 6.133 ms. Best time for 67 bit trial factors: 6.107 ms.

2007-02-07, 00:21	#270
E_tron Sep 2002 Austin, TX 3·11·17 Posts	got core 2?

2007-02-07, 18:23	#271
Grant Jan 2004 3×7 Posts	This is an Intel E6600 over clocked to 3.3 GHz and memory at 732 Hz and with vCore at stock V of 1.275 [Wed Feb 07 09:57:09 2007] Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz CPU speed: 3297.74 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 32 KB L2 cache size: unknown L1 cache line size: 64 bytes L2 cache line size: unknown Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 7.739 ms. Best time for 640K FFT length: 10.509 ms. Best time for 768K FFT length: 12.951 ms. Best time for 896K FFT length: 15.483 ms. Best time for 1024K FFT length: 17.151 ms. Best time for 1280K FFT length: 21.866 ms. Best time for 1536K FFT length: 26.694 ms. Best time for 1792K FFT length: 31.700 ms. Best time for 2048K FFT length: 35.256 ms. Best time for 2560K FFT length: 46.542 ms. Best time for 3072K FFT length: 56.682 ms. Best time for 3584K FFT length: 68.516 ms. Best time for 4096K FFT length: 76.865 ms. Best time for 58 bit trial factors: 3.388 ms. Best time for 59 bit trial factors: 3.414 ms. Best time for 60 bit trial factors: 3.400 ms. Best time for 61 bit trial factors: 3.389 ms. Best time for 62 bit trial factors: 5.406 ms. Best time for 63 bit trial factors: 5.414 ms. Best time for 64 bit trial factors: 5.184 ms. Best time for 65 bit trial factors: 5.146 ms. Best time for 66 bit trial factors: 5.149 ms. Best time for 67 bit trial factors: 5.127 ms.

2007-02-08, 05:20	#272
BIC 21FF₁₆ Posts	Results for Core2 T7200 with 4 MB L2 Cache Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz CPU speed: 1994.94 MHz CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2 L1 cache size: 32 KB L2 cache size: unknown L1 cache line size: 64 bytes L2 cache line size: unknown Prime95 32-bit version 24.14, RdtscTiming=1 Best time for 512K FFT length: 12.875 ms. Best time for 640K FFT length: 17.600 ms. Best time for 768K FFT length: 21.749 ms. Best time for 896K FFT length: 26.048 ms. Best time for 1024K FFT length: 28.925 ms. Best time for 1280K FFT length: 37.023 ms. Best time for 1536K FFT length: 45.169 ms. Best time for 1792K FFT length: 53.816 ms. Best time for 2048K FFT length: 60.566 ms. Best time for 2560K FFT length: 79.413 ms. Best time for 3072K FFT length: 98.036 ms. Best time for 3584K FFT length: 119.248 ms. Best time for 4096K FFT length: 133.301 ms. Best time for 58 bit trial factors: 5.649 ms. Best time for 59 bit trial factors: 5.651 ms. Best time for 60 bit trial factors: 5.636 ms. Best time for 61 bit trial factors: 5.603 ms. Best time for 62 bit trial factors: 8.950 ms. Best time for 63 bit trial factors: 8.962 ms. Best time for 64 bit trial factors: 8.570 ms. Best time for 65 bit trial factors: 8.536 ms. Best time for 66 bit trial factors: 8.513 ms. Best time for 67 bit trial factors: 8.479 ms.

2007-02-10, 11:43	#274
S485122 "Jacob" Sep 2006 Brussels, Belgium 6AE₁₆ Posts	Benchmarks and dual cores With the current dual and quad cores it does not make a lot of difference when benchmarking if the other cores are idle or benchmarking as well. The memory bottleneck becomes apparent when doing "real" work. With my QuadCore running 4 benchmarks together I had best iteration times equivalent to those of a dual core. But when running real work the times went up by 25% (all cores busy with 1536K FFT exponents.) This is on a P965 based board. With a NVIDIA 650 SLI board the memory bottleneck is even more obvious : the iteration times go up by more than 120% running four primality tests instead of one !!! In all reviews the memory benchmarks are done using one core only, this is why AnandTech and others come to the conclusion that 400 MHz memory is optimal for Core 2 Duos and even Core 2 Quads. In reality that kind of memory speed is not sufficient. The Pentium D9xx did not overload the memory, but they reached the limit. This will become worse when the FFT sizes will grow further. More realistic benchmarks can be obtained by loading all other cores with Primality tests. Another thing would be to have the program give AVERAGE iteration times instead of Best iteration times. The thing to remember is : don't expect the current QuadCores to perform like two dualcores. And most important don't go for a NVIDIA chipset with Core 2 Duo or quads. Jacob

2007-02-11, 22:59	#275
Cruelty May 2005 3130₈ Posts	...or just stick to one Prime95 test + run 3 instances of LLR @ 128k FFT length - the performance hit per core is 1-3%= negligible (tested on nV 650i board)

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