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Best way to stress test Sandy Bridge

post #1 of 18
Thread Starter 
So first I read that Prime Small FFT was the most accurate way to stress test, then I saw some people say that Prime Blend was better, and now I see some people saying LinX is better... so what is the definitive answer here to what I should be using to test my stability?
post #2 of 18
They are all great test and will test the CPU in different ways - I personally go with Prime Blend first to see if it is stable for 16+ hours and then move on to LinX. I know people will cry that 16+ hours is too long, but nothing like having it crash after 3 - 4 hours when their stress testing would be long done - just my .02
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post #3 of 18
Prime Small FFT is the best tool to stress test, LinX stress it a lot more so it's faster to run the test but in my experience it failed multiple times to detect a bad overclock. Prime Blend is good if you want to stress the CPU and the RAM at the same time.
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post #4 of 18
My oc has passed ibt and small ffts only to fail p95 blend in a matter of minutes.
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post #5 of 18
Thread Starter 
Quote:
Originally Posted by grunion View Post
My oc has passed ibt and small ffts only to fail p95 blend in a matter of minutes.
Someone said though that they came out with something for LinX to make it more thorough than Prime Blend... at least I think that is what I remember reading.
post #6 of 18
I do small fft's for an hour then I let it fold for 24.
 
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post #7 of 18
Try LinX with the updated LinPacks, that pushes Sandybridge alot harder than most CPU's because of AVX.
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post #8 of 18
Prime95 Blend tests CPU, RAM and northbridge stability (hence 'blend') while Small FTTs is CPU only. A system with a stable OC on the CPU could fail the a Blend test due to instability in other parts of the system.

LinX/IBT is the most intense CPU stress test AFAIK. Keep in mind that you will never see the temps generated by LinX/IBT during normal use (even while doing heavy gaming or running resource-intensive apps) so don't sweat it if they are higher than you are comfortable with while testing.
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post #9 of 18
My cpu tested 1000 passes of IntelBurnTest at 4.8GHz (1.350v) just fine. It also passed Prime95 Small FFT just fine. However, it failed large FFT in Prime95. I had to raise voltage to 1.390 to get it stable in Prime95 large FFT. Going to run a blend now and see what happens.

My "Best" way?

- 24H LinX
- 24H Prime95 Small FFT
- 24H Prime95 Large FFT
- 24H Prime95 Blend
- 2-4H kicking ass in COD: Black Ops in between tests

Result: one stable as hell system.

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post #10 of 18
It is actually recommended that you should run prime for at least 24 hours if you are wanting to go 24/7. The 19th or 20th hour is said to be the most vulnerable to errors.
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