I have a Dell Optiplex 5050 with an Intel Core i7-7700 CPU. I upgraded my Samsung PM961 NVMe boot drive to a WD Black SM850 but the benchmarks aren't very different comparing the two. I was expecting sequential reads of around 7000MB/s and have around half that. The Samsung drive was installed when the UEFI was in AHCI mode. I restored it to the WD Black with Acronis True Image, changed the UEFI from AHCI to RAID, booted Windows 10 into safe mode and then rebooted into normal mode. Would a fresh install make any difference? The UEFI is still set to RAID but I can't see any RAID devices listed in Device Manager.
My benchmarks are:
-----------------------------------------------------------------------
CrystalDiskMark 6.0.2 x64 (C) 2007-2018 hiyohiyo
Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
Sequential Read (Q= 32,T= 1) : 3436.340 MB/s
Sequential Write (Q= 32,T= 1) : 3058.780 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1424.261 MB/s [ 347720.0 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 997.545 MB/s [ 243541.3 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 306.066 MB/s [ 74723.1 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 227.758 MB/s [ 55605.0 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 63.294 MB/s [ 15452.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 111.719 MB/s [ 27275.1 IOPS]
Test : 1024 MiB [C: 21.2% (93.2/439.3 GiB)] (x5) [Interval=5 sec]
Date : 2021/06/12 13:34:46
OS : Windows 10 Professional [10.0 Build 19043] (x64)
My benchmarks are:
-----------------------------------------------------------------------
CrystalDiskMark 6.0.2 x64 (C) 2007-2018 hiyohiyo
Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
- MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
- KB = 1000 bytes, KiB = 1024 bytes
Sequential Read (Q= 32,T= 1) : 3436.340 MB/s
Sequential Write (Q= 32,T= 1) : 3058.780 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1424.261 MB/s [ 347720.0 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 997.545 MB/s [ 243541.3 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 306.066 MB/s [ 74723.1 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 227.758 MB/s [ 55605.0 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 63.294 MB/s [ 15452.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 111.719 MB/s [ 27275.1 IOPS]
Test : 1024 MiB [C: 21.2% (93.2/439.3 GiB)] (x5) [Interval=5 sec]
Date : 2021/06/12 13:34:46
OS : Windows 10 Professional [10.0 Build 19043] (x64)