Windows 10: My CPU is running bad and only on half of its threads

Discus and support My CPU is running bad and only on half of its threads in Windows 10 BSOD Crashes and Debugging to solve the problem; Hello all,I was recently gaming on my PC when something happened with the PSU without me noticing, it caused excessive temperatures inside my computer... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by Silver565, Oct 6, 2021.

  1. SILVER565
    Silver565 Win User

    My CPU is running bad and only on half of its threads


    Hello all,I was recently gaming on my PC when something happened with the PSU without me noticing, it caused excessive temperatures inside my computer before eventually dying. After replacing the PSU as it no longer worked No power my PC booted and ran fine, but I noticed that the CPU was running at 100% and struggling while trying to play games and causing lag when attempting to multi task voice chat and game at the same time.I then noticed that my CPU was running 4 cores and 4 logical processors when it originally ran 4 cores and 8 logical processors AMD FX 8350 4.0Ghz. Has the PSU dyi

    :)
     
    Silver565, Oct 6, 2021
    #1
  2. ATRAHASIS
    Atrahasis Win User

    Cpu running half speed

    While playing a game few hours ago I noticed my computer suddenly became incredibly slow. The windows task manager showed that the cpu was using half its capabilities. I have been playing this game since 4 years, with this same 4 years-old laptop, and it had never happened before. I have to mention I installed windows 10 few days ago, which also changed my graphic card's drivers. I suppose it is a feature preventing CPU overheat. It may be a new feature, changed parameters that enables it sooner than before, or dust accumulating past 4 years that activates it sooner than before as @Bokan's answer suggest.

    The problem is that this feature does not get disabled when I quit the game, making the computer unusable for several hours. When I first posted this question I had to wait about 8 hours before it came back.. by itself. The only other way to get this speed back is to restart windows in any safe mode, but that is not very satisfying. I have checked battery and power parameters, they are not changed and changing them does not restore the cpu speed. I have checked the graphic card's parameters, same.

    What is this feature ? How to disable it or change its parameters ?

    NOTE : I have an intel CPU that has the SpeedStep technology. But the normal speed is not back after reboot (as I read it does when SpeedStep reduces it), I do not see any option to enable/disable it in the BIOS, neither on the GPU desktop UI. Last time the normal speed was restored while the computer was active (see comments).

    EDIT : I just completed the first reboot of the second time this problem appears, and this time it disappeared ! This is madness.

    This question has also been asked on answers.microsoft.com :


    You can admire how microsoft does not care about giving the **** name of this feature to its unanimous customers, not even mentionning speedstep or battery / power / cpu parameters.

    Also on other website, mentionning speedstep :


    Here on SuperUser but does not solve my issue :


    On 'Answer Tech', live Microsoft's technicians all answer the same epic crap (they all prefer blaming the manufacturer, asking the customer to return his computer (!!!!) than answering that they do not know). This one was particularly good :


    My CPU is running bad and only on half of its threads iHb92.png
     
    Atrahasis, Oct 6, 2021
    #2
  3. SASQUI
    Sasqui Win User
    CPU Running at half speed

    Sound like power saving feature EIST "Enhanced Intel Speed Step technology", it kicks the mutiplier down when the CPU is not under load.

    If you run CPUz and kick off Prime95, You should see the CPU at full speed.

    To turn off, you can usually find the feature in BIOS and enable/disable
     
    Sasqui, Oct 6, 2021
    #3
  4. ZIGZAG3143 (MS -MVP)
    ZigZag3143 (MS -MVP) Win User

    My CPU is running bad and only on half of its threads

    ZigZag3143 (MS -MVP), Oct 6, 2021
    #4
Thema:

My CPU is running bad and only on half of its threads

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