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Do i need to run prime95 small and large after running blend

post #1 of 19
Thread Starter 
I've already run 29hrs of Prime95 Custom Blend with 95% RAM and 100 passes of IBT 6500MB RAM to find my CPU OC rock stable. Do I still need to run P95 small and large FFTs? If so, for how long?
post #2 of 19
Another possible check is your WHEA events to see if you are stable ... link bleow is a quick read:

http://www.overclock.net/t/1305097/whea-logger-event-viewer

Same type of info in Feniks post below:

http://rog.asus.com/forum/showthread.php?25520-Help-me-overclock-to-5GHz/page2
Quote:
On the end there is one more thing to do on Ivy Bridge which will help you spot any errors related to unstable cores, but you will need to find a way to get to Windows Event Logs - Custom Views - Administrative Events, and over there look for WHEA warnings, if you see them happening at time of running any stress tester (even if it completes without errors) then the CPU cores are unstable still and more vcore is needed.
post #3 of 19
Thread Starter 
Please take note of my CPU, I use a 2500K. WHEA errors aren't applicable for Sandy Bridge CPUs. They only appear in IBs. FYI.
post #4 of 19
Did not realize that - sorry - was looking for how some of the others customized the prime tests ... jsut cant find it right now - but starting at post #13051 of 13194 in this thread talks about a stress test ... you might be interested in ... Intel's Extreme Tuning Utility

http://www.overclock.net/t/1313179/official-delidded-ivy-bridge-club/13050#post_19431615
post #5 of 19
I typically run 12+ hours of blend, small and large. I figure if it passes all three tests then I call it good. Its worked good enough for me.
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post #6 of 19
The only "true" test I've found is trying out your OC in Linux. If it can't survive P95 in Linux or even just normal use without throwing up an error then you're stable. Of course...Linux is much less forgiving on a bad OC than Windows.

PS: Blend is both test (CPU and RAM together) IIRC and so you have to run that one longer...
     
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post #7 of 19
http://www.overclock.net/t/838244/prime95-a-quick-dirty-guide-to-the-custom-settings

To the OP's initial question,short answer is yes, different sized FFT's stress different parts of your hardware.But don't use that high % of your RAM. Much of it is already in use by services, prime 95 starts reading from the page file,so it no longer stresses your hardware.
Run blend mode which uses all shorts of FFT's. To consider yourself stable, opinions vary on the "For how long should I run Prime 95" question. In general, 12 hours is ok to say that you are stable. But keep in mind that to run all the tests, Prime 95 needs almost a day.
Hope it helps. Cheers.
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post #8 of 19
Thread Starter 
Quote:
Originally Posted by eodloose View Post

Did not realize that - sorry - was looking for how some of the others customized the prime tests ... jsut cant find it right now - but starting at post #13051 of 13194 in this thread talks about a stress test ... you might be interested in ... Intel's Extreme Tuning Utility

http://www.overclock.net/t/1313179/official-delidded-ivy-bridge-club/13050#post_19431615

Is that the same with IBT?
Quote:
Originally Posted by lonnie5000 View Post

I typically run 12+ hours of blend, small and large. I figure if it passes all three tests then I call it good. Its worked good enough for me.

Yeah, but it needs around 23 hours to complete all the FFTs in a blend test. See the computation here: http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/9690#post_19039349
Quote:
Originally Posted by Rookie1337 View Post

The only "true" test I've found is trying out your OC in Linux. If it can't survive P95 in Linux or even just normal use without throwing up an error then you're stable. Of course...Linux is much less forgiving on a bad OC than Windows.

PS: Blend is both test (CPU and RAM together) IIRC and so you have to run that one longer...

Thanks but I'm not really comfortable with Linux so I'll pass on that.
Quote:
Originally Posted by Grmadness View Post

http://www.overclock.net/t/838244/prime95-a-quick-dirty-guide-to-the-custom-settings

To the OP's initial question,short answer is yes, different sized FFT's stress different parts of your hardware.But don't use that high % of your RAM. Much of it is already in use by services, prime 95 starts reading from the page file,so it no longer stresses your hardware.
Run blend mode which uses all shorts of FFT's. To consider yourself stable, opinions vary on the "For how long should I run Prime 95" question. In general, 12 hours is ok to say that you are stable. But keep in mind that to run all the tests, Prime 95 needs almost a day.
Hope it helps. Cheers.
thumb.gif

Well, 5% is enough for the services, right? Many say that 90-95% is enough for these tests, right?

And yes, like I said above it needs around 23 hours to complete all FFTs in a Blend test. I ran it for 29 hours and made sure that all FFTs were done by taking a peek at results.txt.
post #9 of 19
If while priming you see the disk working,then it reads from the page file. If not,you are good. I always use about 80%,that's just me though. Cheers.
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post #10 of 19
Thread Starter 
Quote:
Originally Posted by Grmadness View Post

If while priming you see the disk working,then it reads from the page file. If not,you are good. I always use about 80%,that's just me though. Cheers.
thumb.gif

Ah ok. I'll try again with 90% RAM because that is what is indicated in the Sandy Stable thread. I hope that's enough though. Thanks!
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