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Whats the best CPU stressing tool these days?

post #1 of 61
Thread Starter 
I picked up a 2700k. I know nothing new. But I have been out of the OCing game for a while.

I see a lot of people saying not to use prime anymore. When I originally got my 2600k and 2500k I was doing 8 hr prime blend runs to insure stability.

Is that still necessary. I have been using real bench so far.

My 2700k is at 4.7ghz @ 1.356v, so far I have done one hour or realbench stress test and three straight runs of the benchmark. I plan to do more but wondering what you guys recommend.
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post #2 of 61

The reason why people are saying to avoid Prime95 is, it's very dangerous to use on overclocked Haswell CPUs. For Sandy and Ivy Bridge, it's still the best (and it probably always will be). Just select "Custom" as soon as you open Prime95 and then in the field for how much memory to use, just enter about 80-85% of how much memory you have (multiply 8192 by anything from about .80 to about .85). If your system can run this for about 24 hours, then it should be perfectly stable.

 

So, why 24 hours? Because there are about 82 FFTs in the Blend test (and the Custom Blend test), and it takes about 24 hours to get through all of them one time each. 8 hours doesn't get you very far at all.

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post #3 of 61
Thread Starter 
Whats up @TwoCables . Man I gotta say I'm kind of over 8,12,24 hour runs of prime. Looking back I was doing 12 hour runs to get into the sandy stable club. I've been reading that a test like realbench is better because it is a varied load which is more like a real work load.

Instead of one constant load for an extended period. I'll see how I'm doing on prime but idk I'm just not excited about stressing the chip for an extended period like that. Thanks for the insight.
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post #4 of 61
Quote:
Originally Posted by lightsout View Post

Whats up @TwoCables . Man I gotta say I'm kind of over 8,12,24 hour runs of prime. Looking back I was doing 12 hour runs to get into the sandy stable club. I've been reading that a test like realbench is better because it is a varied load which is more like a real work load.

Instead of one constant load for an extended period. I'll see how I'm doing on prime but idk I'm just not excited about stressing the chip for an extended period like that. Thanks for the insight.

 

Prime95 is varied too because no two FFTs are the same (and there's a momentary break in between each one). That's why you can't run it for just 8 hours or 12 hours. I honestly don't know why people recommend like "8 hours", "12 hours", etc. I tested it myself and found that it takes about 24 hours to get through all 82 of the FFTs, so I really don't understand this obsession people have with recommending exactly 8 hours, exactly 10 hours, exactly 12, etc. I mean, how can you say that your system is "Prime95 stable" when you don't even do the full test? I'm not directing that at you, but at the people who say that your system is "Prime95 stable" even if you don't complete all 82 FFTs!

 

Oh, and please don't "mention" me in threads I'm already in because all that does is it sends me an e-mail telling me what I already know. ;)


Edited by TwoCables - 10/24/15 at 6:24pm
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post #5 of 61
Thread Starter 
Oh sorry about that lol.
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post #6 of 61
RealBench and/or OCCT. Mostly, RB, though. P95 and Linpack are like the Furmark of CPUs when it comes to the unrealistic heat output.

Hell, I did 15min of RealBench to test my OC stability (Well, numerous 15min runs until it could actually run for 15min tongue.gif ), and I haven't had a bluescreen since. That was about 5 months ago. Also, basic OS nagivation and web browsing is a great way of testing for stability, though you are more prone to corrupting your OS. That said, it's best to stress test on a clean installation because I've corrupted many OS installations due to bluescreens from stability testing. Making an image of the drive beforehand helps out a lot too so you can load the image after you're stable.
Edited by airisom2 - 10/24/15 at 6:43pm
post #7 of 61
Thread Starter 
Quote:
Originally Posted by airisom2 View Post

RealBench and/or OCCT. Mostly, RB, though. P95 and Linpack are like the Furmark of CPUs when it comes to the unrealistic heat output.

Hell, I did 15min of RealBench to test my OC stability, and I haven't had a bluescreen since. That was about 5 months ago. Also, basic OS nagivation and web browsing is a great way of testing for stability, though you are more prone to corrupting your OS. That said, it's best to stress test on a clean installation because I've corrupted many OS installations due to bluescreens from stability testing. Making an image of the drive beforehand helps out a lot too so you can load the image after you're stable.
Thanks man. Yeah I'm working on a pretty old windows install. Not really excited about doing it over so for now I am taking it easy.

Just messed with prime and ibt a little. Vcore jumped from 1.356 to 1.4 when running those apps.

I agree they feel like furmark anymore. I will stick with realbench until I see any instability.
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post #8 of 61

You can have instability without getting bluescreens. It can come in the form of corrupt files, or just little unwanted behaviors, or other things that go wrong that shouldn't go wrong but are mostly a minor annoyance.

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post #9 of 61
Quote:
Originally Posted by lightsout View Post

Oh sorry about that lol.

 

lol it's all good. At least it's not like some forums that tell you via e-mail that you just posted a reply. "Hey TwoCables! TwoCables just posted a reply to a thread that you're watching!" It's like, "Oh wow. Really? Thank you!" hehe I guess I forgot to disable the option that's called "Notify me when I post a reply"! Facepalm. :)

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post #10 of 61
TwoCables whats your opinion on IBT vs Prime95? I've always been a long P95/Orthos user with occasional IBT. I've read time and time again where IBT for extended periods of time can degrade the CPU. It does seem to stress the CPU a little more than say P95.
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