need help figuring out why some of my ssd metrics are terrible.

[Kdawg]

This is my setup:
https://www.userbenchmark.com/UserRun/27221427


This is one of my drives:
https://ssd.userbenchmark.com/SpeedTest/337874/WDC-WDS500G2B0A-00SM50

If you look at the results, most people get 4K R/W ~40/120 MB/s.

However, several people got shitty 4K speeds like I did, at < 30/60 MB/s
even with various decent cpus.... i7-4700mq, ryzen 7 1700, 7700K, i5-8400

see highlighted in yellow....

I have the latest drivers, firmware, etc,


Would a bad batch of nand explain this speed difference, even if sequential transfer speeds are normal?

 

[likeman]

ok just noticed you have the 2D nand version WDBNCE5000PNC (slower then 3D nand drives)
the WDS500G1B0A WDS500G1B0B seem to tbe the 3D nand versions (think it actually says 3D nand on the box and disk)

they all have same firmware versions it seems

still seems fine to me compared to my 840 evo yours is fine (i get 20mb/s read and 40mb/s write on diskmark) User bench is not very reliable source, but yours does seem to be getting lower end of the speed scale (does not mean its defective)

 

[Kdawg]

I used userbench because I needed a large sample database to compare, and it looks like most WD Blue 500 owners are getting the same 4k speeds consistently
with over 20000 samples taken.