L3 Cache Performance on Windows 11?

Discussion in 'Windows 11' started by Espionage724, Aug 19, 2021.

  1. Espionage724

    Espionage724 MDL Expert

    Nov 7, 2009
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  2. crypticus

    crypticus MDL Member

    Jun 29, 2015
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    doubt it, i don't think win11 changed that much by its core. only cosmetic. if there is a performance problem they will fix it in stable releases... don't need to worry much
     
  3. Espionage724

    Espionage724 MDL Expert

    Nov 7, 2009
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    It's still terrible on 22000.160:

    cachemem.png
     
  4. Dragorth

    Dragorth MDL Novice

    Sep 9, 2012
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    Performance was much worse on my Westemere-EX VM, but if they are compiling for newer CPUs, this might be expected.
     
  5. anyen

    anyen MDL Novice

    Apr 21, 2008
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    not only l3 cache on windows 11 but also my nvme drive write speed 3x slower
     
  6. BlackScout

    BlackScout MDL Member

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  7. FerrumMaster

    FerrumMaster MDL Novice

    Jun 5, 2012
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    I do agree, there is something odd. As for nvme just put a proper driver, so it assigns more irq's.

    cachemem.png
     
  8. endbase

    endbase MDL Guru

    Aug 12, 2012
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    #9 endbase, Aug 29, 2021
    Last edited: Aug 29, 2021
    I'm on intel here is my result

    Untitled.png

    No problem with the L3 Cache I believe
     
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  9. iFlaX

    iFlaX MDL Senior Member

    Apr 10, 2015
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    Looking around on YouTube and whatnot, it seems that Ryzen CPU's are the only ones affected by this issue so far. Hopefully something Microsoft will fix before launch.
     
  10. d5aqoëp

    d5aqoëp MDL Addicted

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    New CPU scheduler not optimised for AMD CPUs yet
     
  11. BlackScout

    BlackScout MDL Member

    Aug 4, 2016
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    We'll end up having to ask AMD to once again contact Microsoft to fix issues because of their (MS) weird changes.
     
  12. Espionage724

    Espionage724 MDL Expert

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    I'd be surprised if AMD wouldn't be aware of their own CPUs performing badly on a new OS.

    It would be a bad W11 launch if it released with the lower performance on Ryzen; tech sites and blogs would go wild with it. On the other hand, I doubt it would do much to affect W11's adoption (W10 is doing well after all).
     
  13. panchop

    panchop MDL Member

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    #14 panchop, Aug 30, 2021
    Last edited: Aug 30, 2021
    Atm I haven't noticed absolutely any changes, I have a Ryzen 3600 and in gaming it is the same or a little better than with Win 10.

    Also don't forget that its a beta OS, the real tests come when it is already a product released to the general public.
     
  14. rustynails

    rustynails MDL Novice

    Mar 18, 2015
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    Using all Intel systems here and no problems with L3 speeds or anything . Im guessing its a AMD thing?
     
  15. F44 Control

    F44 Control MDL Novice

    Jul 29, 2012
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    Will an update to AMD chipset drivers fix any of this or is this something on Microsoft's end that they broke?
     
  16. murphy78

    murphy78 MDL DISM Enthusiast

    Nov 18, 2012
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    I don't think the chipset has anything to do with the performance of the cpu specifically. I think it's a more fundamental issue with the processor handling. You could try finding beta chipset drivers, but I wouldn't expect them to do anything for you. They don't do anything in Windows 10. Most of them are just null drivers to satisfy the device manager.
     
  17. RobrPatty

    RobrPatty MDL Addicted

    Jul 23, 2009
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    #18 RobrPatty, Aug 31, 2021
    Last edited: Aug 31, 2021
    AMD Ryzen 9 5950X CPU Results:
    Windows 11
    AIDA64 Cache & Memory Benchmark Win11.png

    Windows 10
    AIDA64 Cache & Memory Benchmark Win10.png

    Same computer same HD's. Big difference in L3 Speeds
     
  18. BlackScout

    BlackScout MDL Member

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    #19 BlackScout, Aug 31, 2021
    Last edited: Aug 31, 2021
    A side effect of this bug is lower CPU performance on other AIDA64 benchmarks as well. (Special attention to CPU AES, CPU ZLib)
    I no longer have Windows 11 installed but I do remember seeing low performance (even with an overclock).

    Maybe Robr can shed a light on that! I may run some benchmarks and spread the word on Reddit or even /r/AMD
     
  19. RobrPatty

    RobrPatty MDL Addicted

    Jul 23, 2009
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    AMD Ryzen 9 5950X CPU Results under stress:
    Windows 11
    CPU stress win11.png

    Windows 10
    CPU stress win10.png

    Not much difference.