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Why is Windows trying to use only "efficency" cores?

Anonymous
2023-01-24T02:31:07+00:00

I have an Intel CPU with 8 hi-performance (hyper-threadable) cores and 4 low-performance "efficiency" cores.

I'm running a CPU intensive task ( a 3D renderer) that uses multiple cores but I find that Window 10 (fully updated) is assigning it to the efficiency cores and leaving the high performance cores mostly unused.

See the resource monitor screen shot...

This was not a problem before, I've had the computer for more than six months now. But now it is a problem.

I already have my "Power Option" set to a high performance plan that should run the CPU at 100% but I'm not getting 100%. I used to get 100% but am no longer

Windows for home | Windows 10 | Performance and system failures

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3 answers

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  1. Anonymous
    2023-04-05T05:37:02+00:00

    Download Quick CPU and set core parking to 100% preformance.

    Then all cores will be used

    1 person found this answer helpful.
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  2. Anonymous
    2023-02-08T22:40:27+00:00

    Pardon my ignorance but didn't Microsoft say you would get a better performance of E/P cores with Windows 11?

    Microsoft may have said that but I must continue using Windows 10 as I have a crucial hardware device for which no Windows 11-compatible drivers are available, and Windows 10 is still a supported Microsoft OS, anyway.

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  3. Sumit D - IA 166.2K Reputation points Independent Advisor
    2023-01-24T03:13:32+00:00

    Hi Rob,

    I am Sumit here to assist you with this question.

    Pardon my ignorance but didn't Microsoft say you would get a better performance of E/P cores with Windows 11? I have seen some similar issues on Reddit and here too.

    https://answers.microsoft.com/en-us/windows/for...

    You may check for BIOS updates - or try uninstalling 22H2 but I doubt there would be a difference.

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