Perpetual benchmark thread...

Xyzzy · 2002-09-05, 09:30

Edit: When you all run your benchmarks, please put "FullBench=1" in prime.ini...

Code:

Intel(R) Pentium(R) 4 CPU 2.00GHz
CPU speed: 1994.12 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 22.8, RdtscTiming=1
Best time for 256K FFT length: 12.229 ms. 
Best time for 320K FFT length: 16.104 ms. 
Best time for 384K FFT length: 19.537 ms. 
Best time for 448K FFT length: 23.448 ms. 
Best time for 512K FFT length: 26.311 ms. 
Best time for 640K FFT length: 34.176 ms. 
Best time for 768K FFT length: 41.644 ms. 
Best time for 896K FFT length: 51.129 ms. 
Best time for 1024K FFT length: 55.390 ms. 
Best time for 1280K FFT length: 79.667 ms. 
Best time for 1536K FFT length: 97.379 ms. 
Best time for 1792K FFT length: 121.184 ms.

CPU - 2GHz Intel P4 (100MHz)
HSF - AVC Sunflower II
RAM - 1GB Crucial DDR (133MHz)
Chipset - Intel 845GL
Storage - 2x 120GB Western Digital WD1200JB
Video - 128MB ATI Radeon 8500 (275/275)

I'm pretty sure the memory is asynchronous on this board... One interesting characteristic of the 845GL chipset is it will not tolerate ECC memory at all... In the past I have run ECC memory in most of my motherboards and usually, if they could not use it, they'd ignore it... That is not the case with the 845GL... It will POST but it will not go any further...

The 845GL also has the ICH4 southbridge which means USB 2.0 and some other goodies... The onboard video is actually pretty good and doesn't slow down things too much, like previous integrated video solutions did... I run a regular video card though...

Nebob · 2002-09-06, 01:26

Code:

Intel(R) Pentium(R) 4 CPU 1.60GHz
CPU speed: 2128.01 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 22.8, RdtscTiming=1
Best time for 256K FFT length: 11.444 ms.
Best time for 320K FFT length: 15.054 ms.
Best time for 384K FFT length: 18.299 ms.
Best time for 448K FFT length: 22.006 ms.
Best time for 512K FFT length: 24.632 ms.
Best time for 640K FFT length: 32.118 ms.
Best time for 768K FFT length: 39.110 ms.
Best time for 896K FFT length: 48.052 ms.
Best time for 1024K FFT length: 51.967 ms.
Best time for 1280K FFT length: 75.187 ms.
Best time for 1536K FFT length: 91.639 ms.
Best time for 1792K FFT length: 114.445 ms.

SIS645DX, DDR333 2.5/3/3/7/2

Annoyingly, my 4096K times seem to run between 270 and 276ms, based on the alignment of the planets. It's not a large difference, but the randomness and sub-optimality of it pisses me off.

Daffy · 2002-09-06, 14:01

I noticed something similar with my KG7-R / Athlon 1400 and a lower range FFT.

Sometimes, it seems to be running fast at optimum speed and sometimes, it's a bit slower (a few ms). This can change while the PC is running for nearly no reason (but after I use the PC). If I start from a fresh boot, it can be either "slow" or "fast". I then run some programs and let Prime95 run again by itself and sometimes it gets better. And vice versa.

I have no explication for this behavior. Taskinfo doesn't show anything special. Maybe the program interacts differently with the cache ? I have no idea.

Anyone noticed this ?

Xyzzy · 2002-09-06, 14:20

I think the benchmark should run a bit longer than it does... It is so short right now that any activity on the box will make the result invalid... If it ran each FFT size for maybe one to five minutes it would average out all these irregularities... What I do now is run the benchmark a few times and take the best one...

xtreme2k · 2002-09-06, 18:12

Code:

Intel(R) Pentium(R) 4 CPU 1.80GHz
CPU speed: 2519.92 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 22.8, RdtscTiming=1
Best time for 256K FFT length: 9.341 ms.
Best time for 320K FFT length: 12.389 ms.
Best time for 384K FFT length: 15.104 ms.
Best time for 448K FFT length: 18.157 ms.
Best time for 512K FFT length: 20.302 ms.
Best time for 640K FFT length: 26.427 ms.
Best time for 768K FFT length: 32.224 ms.
Best time for 896K FFT length: 39.675 ms.
Best time for 1024K FFT length: 42.888 ms.
Best time for 1280K FFT length: 60.925 ms.
Best time for 1536K FFT length: 75.404 ms.
Best time for 1792K FFT length: 92.511 ms.

This is a P4 1.8A overclocked to 2.52GHz/140MHz FSB using 1.575v. Stock Intel Cooler. This chip does 2.7GHz requiring 1.65v but I dont want to run it on a 24/7 basis. Motherboard is Asus P4T533-C with 512MB RD1066 Memory.

It seems like with the newer P4 C1 stepping there ARE some clock to clock improvement over the current B0 stepping. Currently this includes the P4 2.66GHz and the 2.8GHz.

Xyzzy: I think the Intel 845x chipset does NOT support ECC at all. Thats why you will have problems when using ECC memory. Either not POST or not 'using' the ECC function.

Daffy: I do notice this. Sometimes notice that Prime95 is running slower than it should be. No idea how it happens it just happens.

Prime Monster · 2002-09-06, 18:24

The P4 will automagically slow down if it is too hot

guido72 · 2002-09-06, 18:30

Motherboard is Asus P4T533-C with 512MB RD1066 Memory.

Hi! I know that curiosity killed the cat, but here in Italy is virtually impossible to find some sticks of PC1066 memory: so, where didi you find 'em? Thanks!

Daffy: I do notice this. Sometimes notice that Prime95 is running slower than it should be. No idea how it happens it just happens.[/quote]

The same is happening to me as well and no ideas too :-((
regards

xtreme2k · 2002-09-06, 19:03

It isnt the heat causing the thermo throttling of the P4. It ALSO happens on an Athlon XP system that I have.

I got the CPU, MOBO and Memory in Hong Kong :) They are Kingston PC1066 ECC.

Paulie · 2002-09-06, 20:05

My old Laptop: IBM Thinkpad A22m, 512Mb ram (Retired today)

Code:

Intel(R) Pentium(R) III processor
CPU speed: 996.23 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 22.8, RdtscTiming=1
Best time for 256K FFT length: 52.573 ms.
Best time for 320K FFT length: 74.220 ms.
Best time for 384K FFT length: 89.604 ms.
Best time for 448K FFT length: 103.073 ms.
Best time for 512K FFT length: 117.876 ms.
Best time for 640K FFT length: 155.878 ms.
Best time for 768K FFT length: 189.463 ms.
Best time for 896K FFT length: 216.584 ms.
Best time for 1024K FFT length: 252.066 ms.
Best time for 1280K FFT length: 329.658 ms.
Best time for 1536K FFT length: 402.379 ms.
Best time for 1792K FFT length: 493.320 ms.

My new Laptop: IBM Thinkpad A31, 1Gb ram

Code:

Intel(R) Pentium(R) 4 Mobile CPU 1.60GHz
CPU speed: 1198.94 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 22.8, RdtscTiming=1
Best time for 256K FFT length: 15.130 ms.
Best time for 320K FFT length: 20.046 ms.
Best time for 384K FFT length: 24.188 ms.
Best time for 448K FFT length: 29.148 ms.
Best time for 512K FFT length: 32.674 ms.
Best time for 640K FFT length: 42.388 ms.
Best time for 768K FFT length: 51.710 ms.
Best time for 896K FFT length: 63.419 ms.
Best time for 1024K FFT length: 68.865 ms.
Best time for 1280K FFT length: 98.840 ms.
Best time for 1536K FFT length: 123.286 ms.
Best time for 1792K FFT length: 150.892 ms.

Compaq ML580 - Quad P3-Xeon, 2Gb ram (only can use it for another month), running 4 LL, one per CPU

Code:

Intel(R) Pentium(R) III Xeon processor
CPU speed: 701.50 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX, SSE
L1 cache size: 16 KB
L2 cache size: 1024 KB
L1 cache line size: 32 bytes
L2 cache line size: 32 bytes
TLBS: 64
Prime95 version 22.8, RdtscTiming=1
Best time for 256K FFT length: 62.270 ms.
Best time for 320K FFT length: 80.395 ms.
Best time for 384K FFT length: 99.899 ms.
Best time for 448K FFT length: 117.372 ms.
Best time for 512K FFT length: 132.089 ms.
Best time for 640K FFT length: 175.520 ms.
Best time for 768K FFT length: 210.916 ms.
Best time for 896K FFT length: 250.253 ms.
Best time for 1024K FFT length: 281.632 ms.
Best time for 1280K FFT length: 362.278 ms.
Best time for 1536K FFT length: 435.016 ms.
Best time for 1792K FFT length: 521.091 ms.

RLX Server Blade, 640Mb ram

Code:

Transmeta(tm) Crusoe(tm) Processor TM5600 
CPU speed: 665.58 MHz 
CPU features: RDTSC, CMOV, MMX 
L1 cache size: unknown 
L2 cache size: unknown 
L1 cache line size: unknown 
L2 cache line size: unknown 
Prime95 version 22.8, RdtscTiming=1 
Best time for 256K FFT length: 105.611 ms. 
Best time for 320K FFT length: 139.238 ms. 
Best time for 384K FFT length: 165.960 ms. 
Best time for 448K FFT length: 199.995 ms. 
Best time for 512K FFT length: 221.548 ms. 
Best time for 640K FFT length: 293.651 ms. 
Best time for 768K FFT length: 355.083 ms. 
Best time for 896K FFT length: 425.030 ms. 
Best time for 1024K FFT length: 478.481 ms. 
Best time for 1280K FFT length: 620.693 ms. 
Best time for 1536K FFT length: 745.929 ms. 
Best time for 1792K FFT length: 891.290 ms.

ET_ · 2002-09-07, 10:07

My old Athlon 750 MHz, 256 MB RAM PC133:

Code:

AMD Athlon(tm) Processor
CPU speed: 750.11 MHz
CPU features: RDTSC, CMOV, PREFETCH, MMX
L1 cache size: 64 KB
L2 cache size: 512 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 24
L2 TLBS: 256
Prime95 version 22.8, RdtscTiming=1
Best time for 256K FFT length: 56.727 ms.
Best time for 320K FFT length: 69.642 ms.
Best time for 384K FFT length: 93.806 ms.
Best time for 448K FFT length: 100.665 ms.
Best time for 512K FFT length: 111.153 ms.
Best time for 640K FFT length: 148.734 ms.
Best time for 768K FFT length: 182.949 ms.
Best time for 896K FFT length: 216.550 ms.
Best time for 1024K FFT length: 250.692 ms.
Best time for 1280K FFT length: 330.763 ms.
Best time for 1536K FFT length: 401.235 ms.
Best time for 1792K FFT length: 482.676 ms.

Luigi

Xyzzy · 2002-09-07, 10:37

Quote:

Originally Posted by xtreme2k

Xyzzy: I think the Intel 845x chipset does NOT support ECC at all. Thats why you will have problems when using ECC memory. Either not POST or not 'using' the ECC function.

The 845 and 845E will allow ECC... Only the 845G and GL will not... I posted earlier that mine was an 845GL but in fact it is an 845G...

http://www.intel.com/design/chipsets/linecard.htm

2002-09-05, 09:30	#1
Xyzzy Aug 2002 2·7·13·47 Posts	Perpetual benchmark thread... Edit: When you all run your benchmarks, please put "FullBench=1" in prime.ini... Code: Intel(R) Pentium(R) 4 CPU 2.00GHz CPU speed: 1994.12 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 22.8, RdtscTiming=1 Best time for 256K FFT length: 12.229 ms. Best time for 320K FFT length: 16.104 ms. Best time for 384K FFT length: 19.537 ms. Best time for 448K FFT length: 23.448 ms. Best time for 512K FFT length: 26.311 ms. Best time for 640K FFT length: 34.176 ms. Best time for 768K FFT length: 41.644 ms. Best time for 896K FFT length: 51.129 ms. Best time for 1024K FFT length: 55.390 ms. Best time for 1280K FFT length: 79.667 ms. Best time for 1536K FFT length: 97.379 ms. Best time for 1792K FFT length: 121.184 ms. CPU - 2GHz Intel P4 (100MHz) HSF - AVC Sunflower II RAM - 1GB Crucial DDR (133MHz) Chipset - Intel 845GL Storage - 2x 120GB Western Digital WD1200JB Video - 128MB ATI Radeon 8500 (275/275) I'm pretty sure the memory is asynchronous on this board... One interesting characteristic of the 845GL chipset is it will not tolerate ECC memory at all... In the past I have run ECC memory in most of my motherboards and usually, if they could not use it, they'd ignore it... That is not the case with the 845GL... It will POST but it will not go any further... The 845GL also has the ICH4 southbridge which means USB 2.0 and some other goodies... The onboard video is actually pretty good and doesn't slow down things too much, like previous integrated video solutions did... I run a regular video card though...

2002-09-06, 18:12	#5
xtreme2k Aug 2002 2·3·29 Posts	Code: Intel(R) Pentium(R) 4 CPU 1.80GHz CPU speed: 2519.92 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 22.8, RdtscTiming=1 Best time for 256K FFT length: 9.341 ms. Best time for 320K FFT length: 12.389 ms. Best time for 384K FFT length: 15.104 ms. Best time for 448K FFT length: 18.157 ms. Best time for 512K FFT length: 20.302 ms. Best time for 640K FFT length: 26.427 ms. Best time for 768K FFT length: 32.224 ms. Best time for 896K FFT length: 39.675 ms. Best time for 1024K FFT length: 42.888 ms. Best time for 1280K FFT length: 60.925 ms. Best time for 1536K FFT length: 75.404 ms. Best time for 1792K FFT length: 92.511 ms. This is a P4 1.8A overclocked to 2.52GHz/140MHz FSB using 1.575v. Stock Intel Cooler. This chip does 2.7GHz requiring 1.65v but I dont want to run it on a 24/7 basis. Motherboard is Asus P4T533-C with 512MB RD1066 Memory. It seems like with the newer P4 C1 stepping there ARE some clock to clock improvement over the current B0 stepping. Currently this includes the P4 2.66GHz and the 2.8GHz. Xyzzy: I think the Intel 845x chipset does NOT support ECC at all. Thats why you will have problems when using ECC memory. Either not POST or not 'using' the ECC function. Daffy: I do notice this. Sometimes notice that Prime95 is running slower than it should be. No idea how it happens it just happens.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Perpetual "interesting video" thread...	Xyzzy	Lounge	51	2022-10-06 11:28
LLR benchmark thread	Oddball	Riesel Prime Search	5	2010-08-02 00:11
Perpetual I'm pi**ed off thread	rogue	Soap Box	19	2009-10-28 19:17
Perpetual autostereogram thread...	Xyzzy	Lounge	10	2006-09-28 00:36
Perpetual ECM factoring challenge thread...	Xyzzy	Factoring	65	2005-09-05 08:16

2002-09-06, 14:01	#3
Daffy Aug 2002 31 Posts	I noticed something similar with my KG7-R / Athlon 1400 and a lower range FFT. Sometimes, it seems to be running fast at optimum speed and sometimes, it's a bit slower (a few ms). This can change while the PC is running for nearly no reason (but after I use the PC). If I start from a fresh boot, it can be either "slow" or "fast". I then run some programs and let Prime95 run again by itself and sometimes it gets better. And vice versa. I have no explication for this behavior. Taskinfo doesn't show anything special. Maybe the program interacts differently with the cache ? I have no idea. Anyone noticed this ?

2002-09-06, 14:20	#4
Xyzzy Aug 2002 2×7×13×47 Posts	I think the benchmark should run a bit longer than it does... It is so short right now that any activity on the box will make the result invalid... If it ran each FFT size for maybe one to five minutes it would average out all these irregularities... What I do now is run the benchmark a few times and take the best one...

2002-09-06, 18:24	#6
Prime Monster Aug 2002 2²×5×13 Posts	The P4 will automagically slow down if it is too hot

2002-09-06, 18:30	#7
guido72 Aug 2002 Rovereto (Italy) 3·53 Posts	Motherboard is Asus P4T533-C with 512MB RD1066 Memory. Hi! I know that curiosity killed the cat, but here in Italy is virtually impossible to find some sticks of PC1066 memory: so, where didi you find 'em? Thanks! Daffy: I do notice this. Sometimes notice that Prime95 is running slower than it should be. No idea how it happens it just happens.[/quote] The same is happening to me as well and no ideas too :-(( regards

2002-09-06, 19:03	#8
xtreme2k Aug 2002 AE₁₆ Posts	It isnt the heat causing the thermo throttling of the P4. It ALSO happens on an Athlon XP system that I have. I got the CPU, MOBO and Memory in Hong Kong :) They are Kingston PC1066 ECC.