Slow SSD

Danny862 · 16 Jan 2012 at 16:27

I have got a brand new OCZ Vertex 3 60GB SSD, installed windows 7, later changed to AHCI mode. but write speeds are very slow. i cannot think of anything else to get them up
tested using CrystalDiskMark

Seq : 435-READ - 85-WRITE

is there any way to get these up? just a bit off 500mbps

thanks

brendy · 16 Jan 2012 at 16:51

You should have set Ahci first. I am surprised it even booted after changing it over from IDE.

Danny862 · 16 Jan 2012 at 17:33

i used the Windows Registry fix, it did increase read by a huge amount (almost double)

but i cant understand the write speeds, many others have used IDE and get much higher write than this

any ideas?

PhillyDee · 16 Jan 2012 at 17:36

You are benching a boot drive, it could be this. OS access slows benchmarks

Ideally, boot from a different drive and bench the other as a slave.

Danny862 · 16 Jan 2012 at 17:48

I have thought about that, but havent got another boot disk i could use. might have to work on that one.

but what about this post:
http://forums.anandtech.com/showthread.php?t=2189383
similar drive but much higher read speeds ?

thanks

EDIT: how do i know if TRIM is doing its thing? could this be it?

PhillyDee · 16 Jan 2012 at 18:37

run (as admin)

fsutil behavior query DisableDeleteNotify

If the result is '0' TRIM is enabled.

Danny862 · 16 Jan 2012 at 20:12

Ok, so trim is enabled.

any other ideas on this one?
does this mean its a faulty drive?

Danny862 · 18 Jan 2012 at 15:17

Anyone?

I need a bit of help on this one

really dont know what its doing.
i have tested my 500GB Seagate Barracuda 7200.12 and that gets ~130MBps read and write. 60MBps with a SSD isnt right surely?