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post #91 of 100
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I think prime is better than linx, I've seen people pass linx for hours but fail at prime.
post #92 of 100
Quote:
Originally Posted by $ilent View Post

I think prime is better than linx, I've seen people pass linx for hours but fail at prime.
They each stress different parts of the CPU, so it's possible to be stable under one and not the other.

And then neither one guarantees stability in F@H. I ran both for extended times when I was testing the overclock on my home server. Even then I still had some failures while folding on it. The errors were random and several weeks apart. Who's going to run LinX or Prime95 for that long? tongue.gif

This does not preclude the usefulness of LinX and Prime95. IME, they stress the CPU harder and bad overclocks fail more quickly than in F@H. They are handy to dial in an overclock quickly, and then using F@H is the ultimate test. When I did get errors in F@H, I just tweaked the offset up one notch each time.
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post #93 of 100
Quote:
Originally Posted by $ilent View Post

I think prime is better than linx, I've seen people pass linx for hours but fail at prime.

 

P95 is for finding random errors in the long run, LinX tests transient behaviour and thus heavily based on timing and latencies, which will be 99% of your errors. It best to test the CPU with GROMACS though if you're going to use it for folding. As long as you're overclocking, you basically have a metastable system and depending on the moment you take a sample, there might be incorrect data. For example, my 2600K at 4.7GHz did hugeadv for a couple of months without problems, then some P70xx a4 units made it fail 40% in the unit.

 

There's just no point in doing Prime for folding purposes. Best to let it pass LinX 50 runs and make sure there are no latency issues and then filter the glitches by 24/7 folding. Priming 12 hours straight is no guarantee that it will complete GROMACS at all. Bump up the voltage if it fails units.

 

In fact there's a probability that a CPU can fail at idle even if it passes 9001 runs of LinX, 1337 hours of P95 or 1001 nights of folding. It's small but still random. The only thing you do by increasing the current in your CPU is making the probability smaller.

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post #94 of 100
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I've downloaded CPU stress tester 2.0, is it just a black window that says tested 2.xxxxx FP operations? What does it say if it fails?
post #95 of 100
Quote:
Originally Posted by $ilent View Post

I've downloaded CPU stress tester 2.0, is it just a black window that says tested 2.xxxxx FP operations? What does it say if it fails?

I have never herd of that program?
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post #96 of 100
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Its on Stanford website fellow members on here recommended it, it says its better than prime
post #97 of 100
Quote:
Originally Posted by $ilent View Post

Its on Stanford website fellow members on here recommended it, it says its better than prime

Oh OK.Do you have a link so I check it out?
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post #98 of 100
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post #99 of 100
Quote:
Originally Posted by $ilent View Post

sure

http://folding.stanford.edu/English/DownloadUtils

Its top one

It's days since you folded for our team, Are you ready to come back? Give me a pm.
    
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post #100 of 100
Thread Starter 
I know buddy I've still not got my overclock sorted might be worth looking for a temp replacement or letting s3v3n fold if he's available til end of the month.
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