[SOLVED] Very slow Samsung 970 EVO 500GB NVMe speeds

Aug 24, 2019
13
0
10
Here is the score I got.

-----------------------------------------------------------------------
CrystalDiskMark 6.0.2 x64 (C) 2007-2018
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) : 3574.120 MB/s
Sequential Write (Q= 32,T= 1) : 2503.777 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1025.258 MB/s [ 250307.1 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 1939.146 MB/s [ 473424.3 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 478.158 MB/s [ 116737.8 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 373.348 MB/s [ 91149.4 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 44.841 MB/s [ 10947.5 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 125.770 MB/s [ 30705.6 IOPS]

Test : 1024 MiB [C: 8.7% (40.4/465.1 GiB)] (x5) [Interval=5 sec]
Date : 2019/10/26 16:28:21
OS : Windows 10 Professional [10.0 Build 18362] (x64)

4 bottom scores is as you can see extremely low. Why is that and can I fix it?
Use z390 Aorus Master motherboard with the Nvme in the middle spot.

Best regards Rengal.
 
Solution
There is nothing wrong, it is working as expected.
Random performance is always significantly slower than Sequential.

That big number you see advertised (3,500) is only the Sequential.