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
    2022-09-10T23:12:33+00:00

    The absolute MAXIMUM write speed, and I tried Samsung, Adata, XPG, and even the best rated M2 NVMe drives saying the yhave 7000 read and 6500 write, and the max is 2500 MB/s no matter what type of drive. Even on a PCIE4 MB. Read speed I can push almost 8000 MB/s. But write will NEVER go above 2500. No matter what the drive says it can, or whatever drive you use. Its limited for some reason in Windows 11. Windows 10, works as advertised. It all stems from that same error Windows had about limit speeds with NVMe they said they fixed, when they did not. All patches and even reinstalls. No difference, and drives are in max speed lanes and PCIe 4.

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  2. Anonymous
    2022-08-11T13:22:22+00:00

    Well I guess the question is, although still down from the non OS drive, did random writes/reads improve with the latest MS update for you at all? Mine did. I've seen slow but steady upwards improvement on my OS NVME drive with various MS updates over the last 8 months. The latest update had some of the biggest improvements on my random read/write benchmarking I've seen -- which makes sense based on the tech notes regarding IOPS fixes in this update.

    Did you run the update from August 9, 2022?

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  3. Anonymous
    2022-08-11T13:14:14+00:00

    Unfortunately not fixed here. Random Write IOPS on the OS drive still only 41% of what is achieved on a non-OS drive (59% performance loss). All other benchmarks are down between 30% and 8%.

    I would have thought that this would have been sorted by now!

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  4. Anonymous
    2022-08-09T22:49:02+00:00

    Looks like today's MS update (KB5016616) had an IOPS fix. "We reduced the overhead of resource contention in high input/output operations per second (IOPS) scenarios that have many threads contending on a single file." So I ran a benchmark in Samsung Magician, way up after installing this on both random reads/writes.

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  5. Anonymous
    2022-07-02T07:42:52+00:00

    Hej, mam podobny problem z brakiem wydajności na dysku WD Black sn850, pod Windows 11 build 22000.778. Dysk nie osiąga pełnej prędkości, IOPS jest o ponad 50% niższy niż specyfikacja SSD wynosząca 100 000 IOPS. Problem nadal istnieje. Nie zrobiłem porównania pod Windows 10, od razu zrobiłem instalke na wygraną 11.
    Procesor AMD Razen 3700X, MB Asus x570 TUF Gaming Plus. Image

    Windows 11 in safe boot mode, IOPS values are much better, as declared by the manufacturer, I do not know what's going on!

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