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
    2022-01-09T15:57:14+00:00

    Any chance Microsoft is listening and working on this? The holiday code freeze is over, folks :)

    I recently upgraded my motherboard to a much better model (the new Asus TUF Gaming X570 Pro Wifi II), one effect is that my 3DMark PCIe score jumped from 22.3 to 27.2 GB/s, a crazy +22%. But the 980 Pro's random write iops are still almost the same, perhaps just a small lift due to the motherboard (159K->163K) but still a fraction of the performance due.

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  2. Anonymous
    2022-01-09T03:58:22+00:00

    I'm only getting 3700 read/write with my S Blade S70. Should be around 7000/7400 read/write.

    You have a different issue - as you are seeing an overall 50% reduction - not just in random write speed. This means you have the drive in the wrong slot or need to look at your bios settings for that slot. The slot is not running at x4 (but is at x2 - hence 50% reduction). Switch the drive to another m.2 slot on your motherboard or check your bios settings. Make sure it supports PCIe 3.0 x4

    M.2 running at half speed | Tom's Hardware Forum (tomshardware.com)

    [SOLVED] - m.2 port running at x2 instead of x4 | Tom's Hardware Forum (tomshardware.com)

    BIOS/UEFI Configuration for Optimizing M.2 PCIe NVMe SSDs | Crucial.com

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  3. Anonymous
    2022-01-09T03:17:30+00:00

    I'm only getting 3700 read/write with my S Blade S70. Should be around 7000/7400 read/write.

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  4. Anonymous
    2021-12-19T01:23:24+00:00

    An update on this: I uninstalled the secondary SSD (970 Evo Plus), so I now only have one SSD in the system (the 980 Pro), and now my 3DMark PCIe benchmark scores are back to normal, or close: 22.3GB/s, just a bit lower than my previous record of 23.5GB/s (this may be within margin of error, I don't think this particular benchmark is extremely precise). So the problem for that was just PCIe lane allocation; it persisted even after I disabled the secondary SSD in Windows's device manager, it seems the soft-disable is not good enough you really have to yank the thing out of the M.2 slot in order to free its use of PCIe resources.

    But my Magician benchmark scores are unchanged, 160K random write. Still waiting from some good soul at Microsoft, Samsung or AMD to release a fix for whatever causes this.

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  5. Anonymous
    2021-12-14T10:56:40+00:00

    Microsof where is the fix?

    In begining i touth it was my 980pro and even contact tech support, they test it on Winfoes 10 and say all fine, but on W11 its work like trash ssd.

    Your update does not fix my write iops, they stay at 400k.

    But when i test not local disc C but other it shows 1 000 000 iop.

    So how much time i must wait for fix?

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