Windows 11 only has 45% of random write speed in Nvme SSD

Anonymous
2021-10-17T03:51:05+00:00

As you see above, the other performance is about the same, but in RND 4K Q32 T16 the speed has dropped significantly. I know that because the two software versions are different and the condition of the computer is different, it is normal for the performance to fluctuate, but this performance also dropped too much, and the performance remained stable low after many tests at different times.

Windows for home | Windows 11 | Performance and system failures

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  1. Anonymous
    2022-12-19T00:43:34+00:00

    What I've found with my new Samsung 990 Pro (which is the system boot drive):

    • the speeds (especially 4k random write q32t16) are faster in safe mode (~6000 MB/s vs 4600MB/s)
    • the "Intel Computing Improvement Program" that comes with "Intel Driver & Support Assistant" causes the 4k random write to drop to around 2500MB/s

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  2. Anonymous
    2022-09-11T01:11:19+00:00

    That limit of 2500MB/s doesn't seem right; see my previous reply as I measured 5185MB/s. Notice that YMMV with diverse SSD benchmarking tools, I would always trust a first-party tool like Magician's.

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  3. Anonymous
    2021-12-10T04:26:31+00:00

    This update does not solve the issue.

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  4. Anonymous
    2021-12-08T03:03:14+00:00

    I configured Magician to load at startup and rebooted. Still not allowing me to update my firmware for my 970 EVO Plus. I don't think this (the slow random write speed) is a Samsung firmware issue anyway. The random write issue has nothing to with the brand of SSD. It affects many brands of SSDs. It appears to be related to Windows 11 - particularly if the OS is installed on the SSD.

    See this Reddit thread:

    (2) Windows 11 bug -- has crippled SSD (NVMe) Random Write Speeds : Windows11 (reddit.com)

    Also this:

    (2) NVMe SSD speeds crippled in Win 11 -- Neowin site has the details ... : Windows11 (reddit.com)

    Also this:

    General Random Write disk speed degradation in Windows 11. - Microsoft Community

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  5. Anonymous
    2021-12-08T00:02:32+00:00

    Hi,

    I had a similar problem at the ancient times (CP/M opsystem).

    It was caused by size mismatch of logical and physical layer in BIOS of CP/M, because the bug excluded the proper (no reread) usage of the physical layer to cash.

    The logical size was 128 byte, physical one was 256.

    When the BDOS asked the even numbered 128 bytes of logical sector then the BIOS red 256 byte and sent its first 128 bytes to BDOS and when the BDOS asked the next (odd) log sector, then no BIOS used the cash therefore rered same 256 bytes and now sent the second half physical sector.

    In this below link of news there are a 4 times slower driving what it make more truth in my opinion because all (physical, logical, driver layer end so on) sector sizes and its multiplied differences are exponential of 2 (here 2 and 4 times) https://www.neowin.net/news/windows-11-crippling-nvme-ssd-speeds-according-to-multiple-user-reports/

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