Prime95

Keod2

Keod2

Keod2

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Joined
29 Dec 2011
Posts
340
Location
England
Just a quick question, how long should I be running Prime95 for to make sure my overclock is stable, currently I'm doing 8 hours on small FFT, is that long enough?
 
If it runs eight hours on prime, it sounds stable to me. Use the PC as you intend to and ensure it runs OK.
 
To test your stable try running through all sorts of your games and programs your regularly using, it tends to be the wierdest things that root out a unstable system for my rather than just banging on prime overnight. I found scrolling in a menu on a old game was crashing mine, then a touch more voltage problem solved.
 
I used to open up loads of programs (photoshop, kerkythea, chrome ETC...), run Prime 95 blend and run 3dmark06.
This seemed to be a harder test than just prime95, though I'm not sure why as both caused maximum load.

Anyway 8 hours is long enough for most people, though if you do any work that is CPU intensive and lasts along time (like 3D rendering) then you may want to test for longer.
 
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You might want to try large fft to stress the ram a little more. 8 hours sounds more than enough though.

It's not always prime that throws up instabilities. A couple of years back I had a system that was prime stable for 12 hours. It would crash every time I ran gta4 though till I wound back the ram frequency by a notch.
 
I've used far cry 3 as a good real world test. That will crash before long usually if the CPU is unstable.

Also try Cinebench... I've found that to crash before bluescreening which is useful as you can up the voltage without having to reboot.
 
For a quick stability test, i use intel burn test with max memory, it will usually find an unstable overclock with 30mins.
 
and like blue160 says not just benchmarking finds instability try all ya games ya play, ya dont want it crashing when ya getting a really good score in a game or summat :)
 
Never found a game yet that comes close to stressing a system apart from maybe Crysis at ultra high settings.

IBT ran at very high or max for 20 passes in my opinion is close to 4 hours of prime95 but prime should be ran for atleast 6 hours. IBT will run your cpu hotter and use more power than prime.

As said above opening and running all your favorite apps is a good way to find out if you need to change something.
 
Guys quick question. is it just the case of clicking start and leaving running for 8 hours after clocking?

It just seems so simple to me.
 
iB CoMpL3XiTy said:
Also make sure round off error checking is enabled in the settings.
Click to expand...

That is automatically enabled on the Torture tests.

Set Prime to Custom and increase memory usage from default 1600mb to whatever you have free and leave running. Large FFTs are usually the ones to cause failures
 
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