windows 11 slow nvme write speed

Discussion in 'Windows 11' started by anyen, Aug 21, 2021.

  1. anyen

    anyen MDL Novice

    Apr 21, 2008
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    #1 anyen, Aug 21, 2021
    Last edited: Sep 28, 2022
    when i used win 10 my pny(phison) nvme drive read and write speed is around read 3000 and write 3000
    after upgraded to win 11 read speed same 3000 but my write speed degrade to 1000
    it is 3x slower. and i got another drive samsung 970 evo same problem but with bith the write speed and read speed

    other bug is also l3 cache.using amd zen 3

    nvme pny 1tb
    nvme samsung 970 evo

    can anyone confirm read speed and write speed with win 10 and after upgraded to win 11?


    fix
    anyone still has slow write...i have solution...for nvme or ssd the sloution is secure erase
    it will restore performance of the drive
    hope it helps
    back from 1000mbps to 3000mbps
     
  2. endbase

    endbase MDL Guru

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  3. TairikuOkami

    TairikuOkami MDL Expert

    Mar 15, 2014
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    It all comes down to BIOS and drivers, like chipset and NVE. For example for AMD, the combo: the latest ComboAM4PIV2 + the latest AMD chipset drivers, is essential.
     
  4. Espionage724

    Espionage724 MDL Expert

    Nov 7, 2009
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    I've not done benchmarks, but I/O is definitely notably slower on Windows 11 with all builds, compared to Windows 10. I have a SK hynix P31 NVMe SSD.
     
  5. anyen

    anyen MDL Novice

    Apr 21, 2008
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    just download crystal diskmark it is free from micosoft store.and try
     
  6. anyen

    anyen MDL Novice

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    #6 anyen, Aug 21, 2021
    Last edited: Aug 21, 2021
    (OP)
    i installed the latest bios for windows 11 and installed the latest chipset driver from amd and still...it is slower.
    by the way i am using ryzen 5800x pair with x470 prime asus

    have you benchmark? what is your nvme brand?.how many gb?and let me know your crystal disk mark score for the seq read and seq write?
     

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  7. endbase

    endbase MDL Guru

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    Intel
     
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  8. endbase

    endbase MDL Guru

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  9. d5aqoëp

    d5aqoëp MDL Addicted

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    No issue here on WD SN850. 7000 MBps read and 5300 MBps write which is same as Windows 10.

    Few things for you to consider:
    Sometimes speeds get reduced if the m.2 slot is using PCH lanes from motherboard. Move your NVMe drive to the slot closest to the CPU. This is especially true for Intel 11th gen CPUs and Z490/Z590 motherboards.

    When I moved the SN850 drive to the dedicated m.2 PCI 4.0 slot next to the CPU, all my NVMe speed issues vanished.

    Samsung has NVMe controller drivers. Latest are available on winraid forums. Just google them.
     
  10. anyen

    anyen MDL Novice

    Apr 21, 2008
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    ok
    1.tried reinstalled the nvme. same result.
    2.i am using 2 nvme drives,tried detached the second drive and only use one nvme near the cpu same result
    3.maybe amd chipset driver or asus bios

    amd system has other bug aida64 l3 cache 3x slower than windows 10.maybe the amd driver
     
  11. anyen

    anyen MDL Novice

    Apr 21, 2008
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    are you using intel?
    maybe the only affected speed is only amd ryzen system.
     
  12. TairikuOkami

    TairikuOkami MDL Expert

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    Not till now, it is clearly slower, but there are no drivers for 11 yet, so it might get better. Either way, my bottleneck is my GPU, so NVMe is not really my concern.
     

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  13. Alfgard

    Alfgard MDL Novice

    Oct 22, 2017
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    #15 Alfgard, Aug 24, 2021
    Last edited: Aug 24, 2021
    Hello I confirm there is a real problem with windows 11 and amd systems since the update .160

    I went back to windows 10 all returned to normal

    5950x
    Rog crosshair VIII Formula last bios 3801
     
  14. endbase

    endbase MDL Guru

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    Samsung driver
     
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  15. Espionage724

    Espionage724 MDL Expert

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  16. TairikuOkami

    TairikuOkami MDL Expert

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    I tried AMD NVMe driver and I ended up with an unbootable system.
     
  17. Espionage724

    Espionage724 MDL Expert

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    You need to have RAID mode enabled for AMD's NVMe driver as far as I know. I don't know if there's any performance difference if you go from non-RAID to RAID on the same Windows install, but theres a difference between doing that and initializing a clean disk for AMD RAID mode (AMD calls it legacy mode or something if you don't initialize the disk and use it as-is; the initialization partitions the disk in some way). There's also 3 different device drivers involved for AMD RAID mode.

    I didn't notice a difference on W10 between NVMe RAID mode (AMD X470) and non-RAID mode (Standard NVMe Controller driver) with a single drive.