M.2 samsung 960 evo 256 slow random 4k iops

[razvanbar]

Hey Guys, i did build a new computer the configuration is :
CPU : I7 7700k
MB: gigabyte z270n wifi
RAM: 1X16 at 3000 but xmp is not enable and is working at 2133
M.2: Samsung 960 evo 256g
VIDEO: 1060

Everything is working perfect but the only problem is that when i run any SSD test the results for seq are good ex. " SEQ 32T1 R: 3203.516, W: 1382.817 " but the random iops are very slow ex. " 4K Q32T4 R: 125.413, W: 124.929 "

samsung magician test
http://imgur.com/n3qktdc

-----------------------------------------------------------------------
CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://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) : 3203.516 MB/s
Sequential Write (Q= 32,T= 1) : 1382.817 MB/s
Random Read 4KiB (Q= 32,T= 4) : 125.413 MB/s [ 30618.4 IOPS]
Random Write 4KiB (Q= 32,T= 4) : 124.929 MB/s [ 30500.2 IOPS]
Sequential Read (T= 1) : 2048.280 MB/s
Sequential Write (T= 1) : 1366.065 MB/s
Random Read 4KiB (Q= 1,T= 1) : 43.113 MB/s [ 10525.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 80.401 MB/s [ 19629.2 IOPS]

Test : 1024 MiB [C: 22.9% (53.2/232.3 GiB)] (x5) <0Fill> [Interval=1 sec]
Date : 2017/04/30 12:52:52
OS : Windows 10 Professional [10.0 Build 15063] (x64)

I did install Intel driver - " sata + rapid storage " , Samsung driver , i did try everything and i not know where is the problem , M.2 card or the MB , i did update bios of motherboard as well. another thing that i notice is that i test with a normal SSD wdBlue 500 and the random iops was the same around 90 - 100 MB/s . The Spec for this Samsung SSD are 400 MB/s

What do you think guys ? what can be ?

Thank you

 

[Palorim12]

What's your Motherboard?

Did you clean install or clone?

 

[marko55]

You can try removing the Samsung driver & let Windows drive it with its native NVMe driver. There's often a difference in performance between the two.

That said, that's REAL low for that drive. Doesn't make sense really. I've seen a lot of posts lately about 960 EVO compatibility issues, and switching to a different NVMe SSD made everything better. However, theirs weren't even working.

I would try one thing: In crystal diskmark, for random, change the threads to 10. That typically yields the full spec of the drives.

 

[sascha_20]

try deactivating your antivirus to me it hellped or uninstalit for the test .

gl.