Prime95 and Super PI

sniperchang

sniperchang

New Member
OC Stability tests. Prime95, Super PI and OCCT

Wikipedia said:
In the overclocking community a rule of thumb is often used to determine how long to run Prime95: test the CPU (8KB FFT) for 10 hours and the memory (4096KB FFT) for 10 hours, and if the system passes, there is a high chance that it is stable. (link)
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Would you agree? Would this be the most thorough and efficient way to test an OC?

EDIT:
Super PI

Wikipedia said:
The program can also be used to test the stability of a certain overclock speed. If a computer is able to calculate PI to the 32 millionth place after the decimal without mistake, it is considered to be moderately stable in terms of RAM and CPU. (link)
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Same Question.

EDIT2:

Any one used OCCT?
 
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I have used OCCT. Most people want to say run prime95 for 8 or more hours.

I only run it for 1-3hours to check for stability.. never failed me yet.
 
Yes, wiki seems to have hit it. I wouldn't run Prime95 that long though. If my CPU load is 100% and running stable for 2 hours, I consider it stable enough.
 
ThatGuy16 said:
I have used OCCT.
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Yes that's nice, but how is it? Efficient, good stability test? Well I guess I could asume you like since you still have it.

ThatGuy16 said:
Most people want to say run prime95 for 8 or more hours.

I only run it for 1-3hours to check for stability.. never failed me yet.
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ok, cool, thanks for the input.


MatrixEVO said:
Yes, wiki seems to have hit it. I wouldn't run Prime95 that long though. If my CPU load is 100% and running stable for 2 hours, I consider it stable enough.
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ok, thanks, I have a much better ideal on how to test for stability with Prime95.

Wait, Prime95 doesn't support multi-cores, could that affect the stability test? Mabe, just a crazy idea, one core is less stable than the other, but Prime95 only stress tests one?
 
During my OCing I have been running prime95 on the 'small FFTs' setting. So that tests 8 to 64. Is that good enough to stress test CPU? Or do I need to run it with only 8K for 8+hours?

On the small FFTs setting, I ran QX9650 at 4.26GHz for 8 hrs. Is this stable, or should I re-run it with only 8Ks?

Also, is it safe to assume that the computer will never be put under the kind of load of prime95 again? Because at 100% load like that, temps were ticking between 69/70 on 2 cores, and about 67/68 on other 2.

Thanks
 
Could someone clear this up? :confused: I just want a program I can trust and use to test my system, with a dual-core, for stability...
 
I use the latest version of prime95.

It effectively stresses all 4 of my cores.

I'm not familiar at all with Orthos, though I have heard of it. I'm not sure what the differences are between it and prime95.

Hope that helps.
 
Orhtos is a beta (it's been in beta for awhile) version of Prime95 capable of splitting 2 threads at a time, it is thusly related to prime95. I just checked with Google, and it seems the newest version of P95 is indeed able to support dual and quad core processors, without the need for extra running instances. Good news, us orthos users can switch back finally.
 
hermeslyre said:
Orhtos is a beta (it's been in beta for awhile) version of Prime95 capable of splitting 2 threads at a time, it is thusly related to prime95. I just checked with Google, and it seems the newest version of P95 is indeed able to support dual and quad core processors, without the need for extra running instances. Good news, us orthos users can switch back finally.
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I see, thank you much clearer.

Would the newest version be 24.14, or that beta that's out, V25.something?
 
Version 25 is the multi-threading version. I didn't know that it was in beta, but I've read some comments, they seem to like it more than Orthos for whatever that's worth.
 
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