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Program Category: Stress Testing



Prime95 is a very useful stability tester for overclockers. When you run a "Torture Test" it will indicate whether or not your PC is stable. If you can run this application for at least 24 hours without errors than you can assume that you have a stable overclock.

Current Version: 27.7

Windows 32 bit ftp://mersenne.org/gimps/p95v277.win32.zip

Windows 64 bit ftp://mersenne.org/gimps/p95v277.win64.zip

Mac OSX (Requires Mac OS X 10.3 or later and an Intel CPU) ftp://mersenne.org/gimps/p95v277.MacOSX.zip

Linux 32 bit ftp://mersenne.org/gimps/p95v277.linux32.tar.gz

Linux 64 bit ftp://mersenne.org/gimps/p95v277.linux64.tar.gz

Other Prime95 downloads available are:

Windows 7/Vista/XP/2008 64-bit Service

Windows 7/Vista/XP/2008/2003/2000/NT 32-bit Service

FreeBSD 32-bit

FreeBSD 64-bit

Publisher: http://www.mersenneforum.org/
 

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when i run prime95, is it safe for my temps to be about 60, for a C2D, overclocked at 3.8, and leave it on overnight to test stablity?
 

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You should have no trouble keeping it at 60°C overnight. It's not necessarily the best idea to run a C2D that hot 24/7 for an extended period of time (pre-G0s, that is) as 55°C max. is recommended for long term overclocking. Still, for the period of time that you're talking about, there should be no adverse effects to your gear.
 

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Stability testing is a very subjective thing. Generally, even the most die hard of testers will accept a 24 hour test as proof of stability. Others say 6 or 10 hours. Personally, I don't go nearly that long, instead doing a shorter test and consider things fine unless I notice instability when running other applications.
 

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Quote:

Originally Posted by Taeric View Post
You should have no trouble keeping it at 60°C overnight. It's not necessarily the best idea to run a C2D that hot 24/7 for an extended period of time (pre-G0s, that is) as 55°C max. is recommended for long term overclocking. Still, for the period of time that you're talking about, there should be no adverse effects to your gear.
Would you happen to know the safe limits of an X2 opteron 175...

...would a 24/7 OC with load temps @ 49-51ish threaten the chips longevity seriously?

I think the juncture point is 65*C ???
 

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Quote:

Originally Posted by Poser View Post
Would you happen to know the safe limits of an X2 opteron 175...

...would a 24/7 OC with load temps @ 49-51ish threaten the chips longevity seriously?

I think the juncture point is 65*C ???
I'm much better informed on Intel than AMD, and I honestly don't know the recommended load temps for dual core Optys off hand. I suggest you check out the AMD CPU forum for more info.
 

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OP updated to latest version 25.6

Enjoy
 

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Quote:

Originally Posted by Poser View Post
Would you happen to know the safe limits of an X2 opteron 175...

...would a 24/7 OC with load temps @ 49-51ish threaten the chips longevity seriously?

I think the juncture point is 65*C ???
That's fine. Rule of thumb is keeping an AMD below 60C max, but in the 50 area load is fine.

25.5 vs. 25.6, any difference?

Why can't I find info on the 25 on mersenne forums?
 

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Hey, I am starting to overclock using this software to stress test my cpu. I have read that when there is an error that it is unstable and needs to be tweaked, but what about when only one core consistently fails? Do I need more voltage? I am pretty sure this isn't the limit of my cpu because it is a qx9650 and only at 3.4ghz
 

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That is usually the case, needing more Vcore make it stable. There are many things it can be if that doesn't do the trick. It's probably easiest to do a search for your motherboard and see what others have done and had issues with. There is a lot to overclocking and learning what each component is capable of to get the most from your system. Know the limits and watch your temps, that's the most important part.
 

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Quote:

Originally Posted by XFreeRollerX View Post
Can you post up a link to 64bit versions? I cant find it on the forum but I know it exists
ftp://mersenne.org/gimps/

The file name is p64v256.zip

Enjoy
 

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OP Updated with latest version 25.7
 

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Quote:

Originally Posted by XFreeRollerX View Post
PRIME95 64bit is gone now... could you re-link?
10/20/08
ftp server down (mersenne.org)

Quote:
PrimeNet 4.0 offline for repair ....
One of the disk drives in the PrimeNet 4.0 RAID array has failed and we have the system offline until it's replaced and the data rebuilt. No ETA yet but guessing a day or so. Email me at [email protected] to follow up.
 
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