Windows 10: Prime95 - Stress Test Your CPU

Discus and support Prime95 - Stress Test Your CPU in Windows 10 Tutorials to solve the problem; How to: Prime95 - Stress Test Your CPU Prime95 - Stress Test Your CPU Prime95 is a freeware program originally designed to find new Mersenne... Discussion in 'Windows 10 Tutorials' started by ICIT2LOL, Mar 9, 2017.

  1. ICIT2LOL Win User

    Prime95 - Stress Test Your CPU


    How to: Prime95 - Stress Test Your CPU

    Prime95 - Stress Test Your CPU



    Prime95
    is a freeware program originally designed to find new Mersenne prime numbers. Given the nature of Prime95 it is now widely used as a CPU stress testing utility to gauge the stability of a CPU, especially when overclocking a system. It includes a Torture Test designed specifically to test PC subsystems for errors.

    Prime95's stress test feature can be configured to test various system components by changing the FFT size. There are three pre-set configurations available:

    • Small FFTs (Primarily tests FPU and CPU caches)
    • In-Place FFTs (Maximum power consumption; tests FPU and CPU caches, some RAM)
    • Blend (Tests everything including RAM)
    On a completely stable system Prime95 will run indefinitely. If an error occurs the stress test will terminate indicating the system may be unstable.


    Prime95 - Stress Test Your CPU [​IMG]
    Warning
    While running Prime95 your CPU will become incredibly hot, it is imperative that you keep a constant watch of your CPU temperature with a system monitoring utility such as stop the Prime95 stress test to prevent inflicting damage on your CPU.


    Prime95 - Stress Test Your CPU [​IMG]
    Note
    Run Prime95 for up to three hours, unless errors occur sooner. Depending on temperatures feel fee to run the test for longer to thoroughly test overclock or system stability



    Here's how:

    1: Download the relevant version of Prime95 for your system.

    2: Extract the zipped folder.

    3: Open the extracted folder and click on the prime95.exe.

    Prime95 - Stress Test Your CPU [​IMG]


    4:
    When Prime95 launches click on the Just Stress Testing button.

    Prime95 - Stress Test Your CPU [​IMG]


    5: Select Small FFTs (or whichever specific test you've been asked to perform if different). Click OK to start the test.


    Prime95 - Stress Test Your CPU [​IMG]


    6: A Worker thread will open for each Logical CPU, these threads will update information about every Logical CPU being tested.


    Prime95 - Stress Test Your CPU [​IMG]



    Prime95 - Stress Test Your CPU [​IMG]
    Information If one or more threads fail the Worker/s will stop and you will see the following message in the relevant thread/s
    Code:
    7: To stop the test at any time click on Test then Stop... from the resulting context menu.


    Prime95 - Stress Test Your CPU [​IMG]


    8: If the test runs without detecting any errors the results will look similar to the results shown in the screenshot below.


    Prime95 - Stress Test Your CPU [​IMG]




    That's it,
    Gav.



    Related Tutorials

    :)
     
    ICIT2LOL, Mar 9, 2017
    #1
  2. Sumit Dhiman2, Mar 9, 2017
    #2
  3. BSOD caused by ntkrnlmp.exe ( nt!_report_gsfailure+25 )

    Nearly all of the Bugchecks point to 124 hardware error which specifically points to processor cache:

    BUSL0_SRC_ERR_M_NOTIMEOUT_ERR

    This can either be due to Faulty hardware i.e. CPU or incorrect cables or thermal error.

    First of all, do a Stress test on CPU:

    Prime95 - Stress Test Your CPU
     
    Sumit Dhiman2, Mar 9, 2017
    #3
  4. ICIT2LOL Win User

    Prime95 - Stress Test Your CPU

    Thanks Shawn I thought perhaps it may have been configured for 10 with the link. *Smile
     
    ICIT2LOL, Mar 10, 2017
    #4
  5. Cliff S New Member
    I just found out you can get Prime95 portable using Chocolaty(PowerShell): Chocolatey Gallery | Prime95 (Portable) 28.7

    Code: tools\chocolateyinstall.ps1 Hide 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 $ErrorActionPreference = 'Stop' $packageName= 'prime95.portable' $toolsDir = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)" $url = 'http://www.mersenne.org/ftp_root/gim...v287.win32.zip' $url64 = 'http://www.mersenne.org/ftp_root/gim...v287.win64.zip' $ExeFile = 'prime95.exe' $ShortcutName = 'Prime95' $packageArgs = @{ packageName = $packageName unzipLocation = $toolsDir fileType = 'ZIP' url = $url } Install-ChocolateyZipPackage @packageArgs Install-ChocolateyShortcut -shortcutFilePath "$envPrime95 - Stress Test Your CPU :public\Desktop\$ShortcutName.lnk" -targetPath "$env:ChocolateyInstall\lib\$packageName\tools\$ExeFile" Install-ChocolateyShortcut -shortcutFilePath "$envPrime95 - Stress Test Your CPU :programData\Microsoft\Windows\Start Menu\Programs\$ShortcutName.lnk" -targetPath "$toolsDir\$ExeFile" -WorkingDirectory "$toolsDir" tools\chocolateyuninstall.ps1 Hide 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 $packageName= 'prime95.portable' $ShortcutName = 'Prime95' if((get-process "prime95" -ea SilentlyContinue) -eq $Null){ Write-Host "prime95 not running. (Good!)" } else{ Write-Host "Stopping Prime95..." Stop-Process -processname "prime95" Start-Sleep -s 3 } Uninstall-ChocolateyZipPackage remove-item "$envPrime95 - Stress Test Your CPU :public\Desktop\$ShortcutName.lnk" -Force -ErrorAction 'SilentlyContinue' remove-item "$envPrime95 - Stress Test Your CPU :programData\Microsoft\Windows\Start Menu\Programs\$ShortcutName.lnk" -Force -ErrorAction 'SilentlyContinue' [/quote]
     
    Cliff S, Mar 10, 2017
    #5
  6. Cliff S New Member
    I'm trying Prime95(V. 28.10 build 19) for the first time today, to check my 4.9GHz OC.
    But it only stays between 4.0 and 4.4GHz*Confused

    I tried it with my OC testing settings( Vcore set to override, and CPU Ratio set to fixed), and my Daily settings(Vcore set to Adaptive, and CPU Ratio set to Dynamic) and it seems to make no difference.

    I haven't seen this in any other stress test or benchmark software.

    Any clues as to why?

    I'm able to use my system still, with no freezing while it's running in the background, and my temps(even though my Vcore is set to 1.45) stay around a stable 68°C while stress testing, and that's while doing the small FFT, while doing Blend, it's a stable 62°C.(I just use fans to cool)

    I thought, after reading some tutorial, different forums posts, and such, from the net, that I could fry bacon on my PC running this test.



    Prime95 - Stress Test Your CPU [​IMG]

    running small FFT
     
    Cliff S, Mar 10, 2017
    #6
  7. essenbe Win User
    Cliff the utility on the left side of that screenshot shows the multiplier at 41.
     
    essenbe, Mar 10, 2017
    #7
  8. Cliff S New Member

    Prime95 - Stress Test Your CPU

    That's what I mean, it doesn't use my full OC(49X)
    When I turn Prime95 off, or use another stress program at the same time, like CPU-Z it jumps to the correct 4.9:

    Prime95 - Stress Test Your CPU [​IMG]

    (CPU-Z & Prime95 small FFT running together while AIDA64, Skype Preview and Edge with 3 tabs open(and very well at that*Smile)
     
    Cliff S, Mar 10, 2017
    #8
  9. Cliff S New Member
    Here is a video showing what I mean:
    [youtube]4F8ApTDBj6c[/youtube]
     
    Cliff S, Mar 10, 2017
    #9
  10. Dude Win User
    Cliff, is CIE disabled? That will cause it to drop too.
     
  11. Cliff S New Member
    Oh?

    Prime95 - Stress Test Your CPU [​IMG]


    It sure is, that's my boards default.
    Do you recommend it being turned on, or should I accept the down clock, which I have never seen before, and think of it as a "safety measure"?
     
    Cliff S, Mar 10, 2017
    #11
  12. Cliff S New Member
    If I run CPU_Z(for a short bit) and P95 at the same time, I get my x49 back though.
     
    Cliff S, Mar 10, 2017
    #12
  13. Dude Win User

    Prime95 - Stress Test Your CPU

    What I meant is enabled it is a power saving feature. I think what is happennig is it is getting close to the TDP. You would have to change the settings I show here, increase them and it will run at your OC, and yes the temps may skyrocket then


    Prime95 - Stress Test Your CPU [​IMG]
     
  14. Cliff S New Member
    I have no idea what to set them too, maybe It's just better to leave it then. I get the OC when using stuff that needs it, it's just P95 that down clocks. what do you think, you have seen all my benchmarks>?
     
    Cliff S, Mar 10, 2017
    #14
  15. Dude Win User
    I would leave well enough alone, you score good in benchmarks. No need to stress the system with P95 as you will never see a load like that in real life
     
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