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Hardware - Stress Test With Prime95

How to Stress Test your Hardware for Stability and Heat Problems with Prime95
Published 28 Jul 2010
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How to Stress Test your Hardware for Stability and Heat Problems with Prime95

Tip   Tip
Be sure to keep an eye on your temperatures when running these tests, especially the Large FFTs. I recommend the free utility Speedfan.



1. Download the appropriate 32-bit or 64-bit Windows version of Prime95 from this link: Free Software - GIMPS

You can skip down to step 2 on that page; it is not necessary to register, if all you want to do is torture test.

2. Run the Prime95.exe file. If the UAC warning appears, click "Yes" to allow it.

3. Select "Just Stress Testing" in the first window that appears.
Hardware - Stress Test With Prime95-capture.png
4. Select "Small FFTs", or whatever tests someone asks you to run. Prime95 will automatically select the maximum number of threads reported by Windows in the "Number of threads to run" box.
Hardware - Stress Test With Prime95-capture1.png
5. Keep an eye on your temperatures, and stop the test if the machine starts to overheat.

6. Leave the test running for up to 2 hours, unless errors occur sooner. Errors will show up by one or more of the workers stopping.

Note   Note
As with all hardware tests, Prime95 is not fail-safe. If the test passes for 2 hours with no errors, it is most likely to be stable. Unfortunately, it sometimes makes mistakes and gives a clean bill of health to faulty hardware.









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28 Jul 2010   #1
smarteyeball

8 Pro x64
 
 

Don't forget to tick the 'Round off checking' option under Advanced:
Hardware - Stress Test With Prime95-round-off-checking.jpg

Otherwise you won't know if one of your cores has failed etc

(And I personally prefer Realtemp over Speedfan, but that's just my opinion)

My System SpecsSystem Spec

28 Jul 2010   #2
Jonathan_King

Windows 7 Professional x64
Rednecksville
 
 

I have no idea what round-off checking is. Is it enabled by default? When I torture tested my CPU for my overclock, I didn't mess with that at all. I knew it had failed because one of the cores suddenly stopped testing and reported errors.
My System SpecsSystem Spec
29 Jul 2010   #3
Jonathan_King

Windows 7 Professional x64
Rednecksville
 
 

Done. Now all I need is a thumbnail for it...any suggestions?
My System SpecsSystem Spec
.


29 Jul 2010   #4
scoopeeedoo

7Home64
Belgium
 
 

Quote   Quote: Originally Posted by smarteyeball View Post

(And I personally prefer Realtemp over Speedfan, but that's just my opinion)
Realtemp's only for Intel, isn't it?
My System SpecsSystem Spec
30 Jul 2010   #5
Jonathan_King

Windows 7 Professional x64
Rednecksville
 
 

Quote   Quote: Originally Posted by scoopeeedoo View Post
Quote   Quote: Originally Posted by smarteyeball View Post

(And I personally prefer Realtemp over Speedfan, but that's just my opinion)
Realtemp's only for Intel, isn't it?
Yes, that is correct.
My System SpecsSystem Spec
31 Jul 2010   #6
Dave76

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
Wanderer
 
 

Nice tutorial Jon, nice to be able to link to this instead of writing it all the time.

I use Realtemp as well.
My System SpecsSystem Spec
08 Aug 2010   #7
CarlTR6

Windows 7 Ultimate 32 bit
Orlando, Florida
 
 

Excellent! Very well done and very helpful. Thanks much.
My System SpecsSystem Spec
29 Oct 2010   #8
Dave76

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
Wanderer
 
 

Just thought I would add the CPU tempurature monitoring programs here for reference.

For Intel: Real Temp

For AMD and Intel: Core Temp

For AMD and Intel: Speedfan (as in the 'Tip' above)

I see these recommended on many forums, but others work as well.
My System SpecsSystem Spec
30 Oct 2010   #9
Jonathan_King

Windows 7 Professional x64
Rednecksville
 
 

Thank you Dave.
My System SpecsSystem Spec
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