WD Green M.2 Performace Question

Dec 16, 2018
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USAFRet

Titan
Moderator


1. The WD Green SSD's are low end performers in the SSD world.
2. We have no idea what your "lower results" actually are. Please post a screencap of your CrystalDiskMark result.
 
Dec 16, 2018
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I updated the post with pictures of the results
 
Your 4k speeds with a QD=32 (queue depth, or 32 files requested at once) are nearly identical to a QD=1. This suggest that NCQ is disabled - NCQ allows the drive to handle multiple read/write requests in parallel, so allows faster speeds with deeper queue depths. NCQ is disabled when your SATA ports are in IDE mode. You have to go into the BIOS and switch them to AHCI mode to enable NCQ. (RAID mode works too - it's a superset of AHCI.)

HOWEVER, before you hop into the BIOS and change it, understand that switching it to AHCI mode can make Windows unbootable. You don't say which version of Windows you have, so I'll just give you some generic references to fixing the problem (preferably before you switch it).

https://hetmanrecovery.com/recovery_news/how-to-enable-ahci-mode-for-sata-in-the-bios-without-reinstalling-windows.htm
http://www.tomshardware.com/answers/id-3285661/switched-ssd-windows-wont-boot-ahci.html
http://triplescomputers.com/blog/uncategorized/solution-switch-windows-10-from-raidide-to-ahci-operation/
 
Dec 16, 2018
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I'm using windows 10 on a ASUS ROG Strix Z370-E motherboard if thats helpful to you

Update: According to the advice you sent the drive is in AHCI mode

Update 2: Also I had a 2.5" SATA SSD before and it was working fine (Results:http://www.mediafire.com/view/m8gniv7mib99heb/My_results%2528Old%2529.PNG/file)
 

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