What are some good programs to stress CPU Usage?

MichaelD

Lifer
Jan 16, 2001
31,529
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76
Prime95 is not new, but it's a de-facto standard. There's also some program called "Toast" thats' supposed to work well.
 

BFG10K

Lifer
Aug 14, 2000
22,709
2,970
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A UT2003 botmatch fully loaded with bots on the highest AI level. Also set the physics to maximum detail.
 

Ilmater

Diamond Member
Jun 13, 2002
7,516
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Another vote for Prime95 here. If not that, then try 3DMark on continuous looping with some type of distributed computing program working in the background (like SETI@home or Genome@home). That will stress both your video card and your CPU, which should bring your total system temps as high as they'll go. That'll test stability!
 

HokieESM

Senior member
Jun 10, 2002
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If you want something, I'll send you a few of my FE files/runs to do for me... they keep my P4 2.26 at 100% for, oh, 5 or 6 days at a time. <grin>

Seriously, if you just want to do some stress-testing, Prime 95 is fine.
 

zephyrprime

Diamond Member
Feb 18, 2001
7,512
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Just last night I was running CPUburn. I then stopped doing that and immediately started Prime95. My temps went DOWN while running prime95. Prime95 is way overrated.
 

Budman

Lifer
Oct 9, 1999
10,980
0
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Originally posted by: zephyrprime
Just last night I was running CPUburn. I then stopped doing that and immediately started Prime95. My temps went DOWN while running prime95. Prime95 is way overrated.

Prime95 tests STABILITY,there are other programs that can make a cpu run hotter but they dont test stability.
 

sharkeeper

Lifer
Jan 13, 2001
10,886
2
0
Just last night I was running CPUburn. I then stopped doing that and immediately started Prime95. My temps went DOWN while running prime95. Prime95 is way overrated.

What version of P95? I find that the latest build will push the CPU much harder. burnk6 absolutely rapes the cpu and resulted in a five degree centigrade difference from P95. The newest build of P95, however kept the cpu temp the same as the burnk6 program. P95 is also more sensitive to cache and memory controller errata as well.

Games typically do NOT stress the CPU as hard as one thinks. I once left 3DMARK 2001SE looping for 24 hours and ESC'd it but didn't close program. Went into the task manager and the CPU time was less than 6 hours for that process! That's less than 25% cpu utilisation average! The video card sure gets hot though.

Cheers!
 

Macro2

Diamond Member
May 20, 2000
4,874
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I just Dled and ran Prime95 ver 22.12.1. WIth MBM 5.2.2.3 with the DLL for the Asus A7N8X deluxe installed.

Ran the default options>"Torture test". "400 Lucas-Lehmer iteraitions of M19922945 using 1024K FFT length" Don't ask me what that means...

My diode temperature jumped from 48 to 55 C in just minute or so.

I'm still trying to find out why the 8 C defference between the BIOS temp 56 C and the idle 48 C temp that MBM is reading, means.

Someone suggested that when you're in BIOS the CPU is running full on and when you are in Windows it's is being idled and will run cooler? Is this enough to account for the difference?

Thanks, Mac
 

MichaelD

Lifer
Jan 16, 2001
31,529
3
76
I did not know there was a new version of Prime95!!

I've been using the same one for.....three years now. :eek:

Somebody hook me up!
 

sharkeeper

Lifer
Jan 13, 2001
10,886
2
0
Yes sitting in BIOS will run the chip quite hot, although it's possible to get it a few (and just a few) degrees hotter in the OS. This is why some marginal systems will lock up in the BIOS but can boot Windows and run ok until you make things sweat.

Cheers!
 

Macro2

Diamond Member
May 20, 2000
4,874
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0
Wow, I din't think it would run that much hotter in the BIOS. Then again, I've never had a mobo that measured the internal diode.
I'm assuming the A7N8X measures the diode temp.
I can see why EPox had all those returns when they started measuring the internal diode temp.

Mac