I'm learning to like Thoroughbreds.

XP1800+ on a Asus A7V333 pulling about 1833 Mhz (actual clock) on 166 FSB at 11 multiplier. 1792k FFT down around .188 - and I don't think I've found the limit on the FSB yet (total clock limit on this CPU seems to be around 1850-1860ish).

Also runs 5 degrees C or a little more COOLER even when overclocking 10+% faster than I ever managed to get a Palomino XP1800+ up to....


I'll have the actual benchmarks posted sometime later this week - still finalizing some stuff on that machine.

AMD Athlon(TM) XP 1800+ (Thoroughbred)
CPU speed 1800 MHz (150Mhz FSB x12 multiplier)
DDR PC2700 CAS2.5 @ 150 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 23.2, RdtscTiming=1
Best time for 384K FFT length 46.141 ms.
Best time for 448K FFT length 52.154 ms.
Best time for 512K FFT length 58.489 ms.
Best time for 640K FFT length 73.452 ms.
Best time for 768K FFT length 89.325 ms.
Best time for 896K FFT length 104.048 ms.
Best time for 1024K FFT length 119.276 ms.
Best time for 1280K FFT length 151.989 ms.
Best time for 1536K FFT length 181.900 ms.
Best time for 1792K FFT length 217.479 ms.
Best time for 2048K FFT length 244.790 ms.


AMD Athlon(TM) XP 1800+ (Thoroughbred)
CPU speed 1833.33 MHz (166 FSB x11 Multiplier)
DDR PC2700 CAS2.5 @ 166 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 23.2, RdtscTiming=1
Best time for 384K FFT length 38.107 ms.
Best time for 448K FFT length 41.999 ms.
Best time for 512K FFT length 46.553 ms.
Best time for 640K FFT length 59.334 ms.
Best time for 768K FFT length 72.688 ms.
Best time for 896K FFT length 84.772 ms.
Best time for 1024K FFT length 97.332 ms.
Best time for 1280K FFT length 129.410 ms.
Best time for 1536K FFT length 154.900 ms.
Best time for 1792K FFT length 186.297 ms.
Best time for 2048K FFT length 208.178 ms.

AMD Athlon(TM) XP 1800+ (Thoroughbred)
CPU speed 1827.50 MHz (174 FSB x10.5x Multiplier)
DDR PC2700 CAS2.5 @ 174 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 23.2, RdtscTiming=1
Best time for 384K FFT length 37.431 ms.
Best time for 448K FFT length 40.995 ms.
Best time for 512K FFT length 45.425 ms.
Best time for 640K FFT length 57.962 ms.
Best time for 768K FFT length 71.206 ms.
Best time for 896K FFT length 83.125 ms.
Best time for 1024K FFT length 95.108 ms.
Best time for 1280K FFT length 126.465 ms.
Best time for 1536K FFT length 151.975 ms.
Best time for 1792K FFT length 182.876 ms.
Best time for 2048K FFT length 204.786 ms.

Actual long-term usage generates a mix of 0.184 and 0.185 timings with these settings. This is the setting I'm sticking with, as it seems to be the fastest on this machine. CPU does NOT like running at anything over about 1850Mhz reliably - not too bad for a 1533Mhz rated CPU running without air conditioning and air cooled at stock voltage....

AMD Athlon(TM) XP 1800+ (Thoroughbred)
CPU speed 1848.06 MHz (176 FSB x10.5 Multiplier)
DDR PC2700 CAS2.5 @ 176 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 23.2, RdtscTiming=1
Best time for 384K FFT length 41.643 ms.
Best time for 448K FFT length 46.794 ms.
Best time for 512K FFT length 52.470 ms.
Best time for 640K FFT length 65.948 ms.
Best time for 768K FFT length 81.202 ms.
Best time for 896K FFT length 93.854 ms.
Best time for 1024K FFT length 108.005 ms.
Best time for 1280K FFT length 142.583 ms.
Best time for 1536K FFT length 171.413 ms.
Best time for 1792K FFT length 206.748 ms.
Best time for 2048K FFT length 231.622 ms.

The last result is ODD - should have been faster at 176Mhz than 174 Mhz. I suspect some sort of divider in the BIOS/chipset that's non-configurable is kicking in at over 175Mhz FSB and slowing the RAM access down.

All of these tests done on a ASUS A7V333-X motherboard (VIA KT333 chipset) with BIOS v1.002

I could learn to like Thoroughbreds.... 9-)

Dell, Inspiron 5100 laptop
Prime95 V23.3.1

Intel(R) Pentium(R) 4 CPU 2.53GHz
CPU speed: 2525.04 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 23.3, RdtscTiming=1
Best time for 384K FFT length: 15.677 ms.
Best time for 448K FFT length: 18.392 ms.
Best time for 512K FFT length: 21.284 ms.
Best time for 640K FFT length: 26.249 ms.
Best time for 768K FFT length: 31.453 ms.
Best time for 896K FFT length: 37.579 ms.
Best time for 1024K FFT length: 41.893 ms.
Best time for 1280K FFT length: 56.969 ms.
Best time for 1536K FFT length: 69.219 ms.
Best time for 1792K FFT length: 81.881 ms.
Best time for 2048K FFT length: 93.066 ms.

Untweaked Shuttle SN41G2 barebones system, memory set to synchronous, FN41 motherboard...

AMD Athlon(tm) XP 2500+
CPU speed: 1829.93 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 23.4, RdtscTiming=1
Best time for 384K FFT length: 32.369 ms.
Best time for 448K FFT length: 36.468 ms.
Best time for 512K FFT length: 39.934 ms.
Best time for 640K FFT length: 52.538 ms.
Best time for 768K FFT length: 65.003 ms.
Best time for 896K FFT length: 75.540 ms.
Best time for 1024K FFT length: 87.432 ms.
Best time for 1280K FFT length: 112.174 ms.
Best time for 1536K FFT length: 134.566 ms.
Best time for 1792K FFT length: 164.620 ms.
Best time for 2048K FFT length: 180.681 ms.

Dell Dimension desktop - Pentium 4 2.66 GHz, 1024 MB 533MHz RDRAM

Prime versions 23.4 vs 22.12: 25% improvement on 1792K FFT.

Prime 23.4
[code]
Intel(R) Pentium(R) 4 CPU 2.66GHz
CPU speed: 2651.82 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 23.4, RdtscTiming=1
Best time for 384K FFT length: 13.435 ms.
Best time for 448K FFT length: 15.856 ms.
Best time for 512K FFT length: 18.088 ms.
Best time for 640K FFT length: 21.716 ms.
Best time for 768K FFT length: 26.450 ms.
Best time for 896K FFT length: 31.368 ms.
Best time for 1024K FFT length: 35.274 ms.
Best time for 1280K FFT length: 46.212 ms.
Best time for 1536K FFT length: 56.942 ms.
Best time for 1792K FFT length: 67.556 ms.
[/code]
Prime 22.12
[code]
Intel(R) Pentium(R) 4 CPU 2.66GHz
CPU speed: 2651.55 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: 64 bytes
TLBS: 64
Prime95 version 22.12, RdtscTiming=1
Best time for 384K FFT length: 14.432 ms.
Best time for 448K FFT length: 17.380 ms.
Best time for 512K FFT length: 19.655 ms.
Best time for 640K FFT length: 25.326 ms.
Best time for 768K FFT length: 31.003 ms.
Best time for 896K FFT length: 37.987 ms.
Best time for 1024K FFT length: 41.188 ms.
Best time for 1280K FFT length: 58.121 ms.
Best time for 1536K FFT length: 72.188 ms.
Best time for 1792K FFT length: 89.860 ms.
[/code]

Well, i benched my new i875 system at work today (MSI NEO board bios 1.5 - 2*TwinX512CorsairXMS3200LL@2-3-3-6).

If i am not totally mistaken, i got a 70ms bench on the 2048FFT with V23.4 at only 2.86GHz (P4C2.6) with DDR-420.

Using the i875 with DDR-400 and a 3.1GHz clock (5:4 mem) i got a 68ms on the 2048FFT.

Reading the numbers here i cannot believe it. I try to post the full bench data tomorrow if i did not dream it hehe ;)

I use the Intel boxed stock air cooling solution and i really don't want to increase vcore to get some more Megahurts - that box should last 3 years to work with.

Cheers,

Tau

Wow, TauCeti that's pretty fast if true. BUT how does it compare to this speed demon:

CPU type: 486 DX4-100
CPU Speed: 100
L2 cache size: ?
L2 cache speed:?
Memory Type / Bus Speed: ?
OS: Windows 95
Notes: Dell Latitude XP laptop, 20MB RAM

Intel 486 processor
CPU speed: 100.00 MHz
L1 cache size: unknown
L2 cache size: unknown
L1 cache line size: unknown
L2 cache line size: unknown
Prime95 version 22.12, RdtscTiming=1

Best time for 256K FFT length: 5644.112 ms.
Best time for 320K FFT length: 7487.132 ms.
Best time for 384K FFT length: 8896.265 ms.
Best time for 448K FFT length: 10872.523 ms.
Best time for 512K FFT length: 11809.254 ms.
Best time for 640K FFT length: 15911.686 ms.
Best time for 768K FFT length: 19052.907 ms.
Best time for 896K FFT length: 23010.530 ms.
Best time for 1024K FFT length: 25308.399 ms.
Best time for 1280K FFT length: 34091.262 ms.
Best time for 1536K FFT length: 56942.322 ms.
Best time for 1792K FFT length: 150014.057 ms.

delta_t: Don't make me break out my 386SX16... :(

Wow, I think my Ti85 could beat that! Well perhaps not, but it would be a close one! :D

I started a new thread for "Who has the lowest benchmarks?" http://www.mersenneforum.org/viewtopic.php?t=745

So bring on those old dinosaurs.

The i875 chipset works like a charm with prime95 (MSI NEO board bios v1.5, mem 2-3-3-6 timings with 2.8V in-spec voltage (Corsair TwinX3200LL), vCore default, stock intel boxed cooling)

(EDIT: Bench 2 was only stable for about 60 minutes but the settings seem to work with slightly raised vcore)

Bench 1: FSB at 880MHz(220 quad), mem at 420MHz

Intel(R) Pentium(R) 4 CPU 2.60GHz
CPU speed: 2873.47 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 23.4, RdtscTiming=1
Best time for 384K FFT length: 12.300 ms.
Best time for 448K FFT length: 14.587 ms.
Best time for 512K FFT length: 16.588 ms.
Best time for 640K FFT length: 19.966 ms.
Best time for 768K FFT length: 24.273 ms.
Best time for 896K FFT length: 28.798 ms.
Best time for 1024K FFT length: 32.372 ms.
Best time for 1280K FFT length: 42.255 ms.
Best time for 1536K FFT length: 52.235 ms.
Best time for 1792K FFT length: 61.950 ms.
Best time for 2048K FFT length: 69.863 ms.

System draws 70W idle and about 133W with prime95 torture-test - that is about 9.3Ws/2048FFT.

Bench 2: FSB at 960Mhz (240quad), mem at 400MHz

Intel(R) Pentium(R) 4 CPU 2.60GHz
CPU speed: 3133.24 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 23.4, RdtscTiming=1
Best time for 384K FFT length: 11.437 ms.
Best time for 448K FFT length: 13.554 ms.
Best time for 512K FFT length: 15.425 ms.
Best time for 640K FFT length: 18.535 ms.
Best time for 768K FFT length: 22.552 ms.
Best time for 896K FFT length: 26.662 ms.
Best time for 1024K FFT length: 29.951 ms.
Best time for 1280K FFT length: 39.310 ms.
Best time for 1536K FFT length: 48.347 ms.
Best time for 1792K FFT length: 57.434 ms.
Best time for 2048K FFT length: 64.950 ms.

System draws 70W idle and about 140W with prime95 torture-test - that is about 9.1Ws/2048FFT.

Tau