Prime95 on amd

stfrances

Member
Jan 24, 2005
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Whenever I was testing my p4 for stability with prime95 I'd run 2 instances at the same time to run the cpu at 100% to find its stability. Now I have an AMD 3500+ NC and it is my first AMD build. I am so far following Zebo's thread instructions and I'd like to know what is the best way to run Prime95 on the AMD cpu for stability.
 

RichUK

Lifer
Feb 14, 2005
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just run the normal blend test for 12 hour or so (or how ever long you want run it for)
 

CheesePoofs

Diamond Member
Dec 5, 2004
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You should run the Small FFT's test, that is the most CPU intensive one. And you only need to run one instance of it.
 

stfrances

Member
Jan 24, 2005
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Don't know why but it was not running 100% as the graph indicates, it would just go up and down from 12% to 60% and most of the time it just fluctuates. Will try again to see what happens.
 

mindwreck

Golden Member
May 25, 2003
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If its not running 100% all the time then most likely you're running the blend test. Run the small or the in-place fft test for max cpu usage and heat.
 

stfrances

Member
Jan 24, 2005
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Ok cheesepoofs will do, I just tried the blend test and just fluctuates.
One more thing, on the affinity, I just let alone the check mark on the "let program run on any cpu"
 

stfrances

Member
Jan 24, 2005
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Got it working right, thanks guys. Only problem is that the overclock on the NC 3500+ is not too promising, would not boot on 240 fsb on a 11x multi, would boot up to windows on 235 but prime95 would not last a second, it gets error instantly.

**edit**

Done some work and tweaking and were able to get it up to 250 x10, FSB at 200 with 2.5-3-3-6, 2T and other setting from DFI forums. Prime95 for 24+ hrs and done some pictures of the settings and BIOS shots.
Currently got it tweaked up to 260 x10, FSB at 180 with 2.5-3-3-6....been running Prime95 for 4+ hours so far............and hope to achieve at least 8+ hours