Samsung 840 ssd Low iops

atomic7431 · 16 Mar 2014 at 11:47

Samsung 840 SSD and just run the magician software and the random write (iops) is about half what it should be, see attached pic.

I have the latest firmware, optimized system for performance and im running in AHCI mode with windows 7 X64.

System specs in sig, searching to see what the cause may be..

atomic7431 · 16 Mar 2014 at 12:28

And crystal mark results -

David Bisset · 16 Mar 2014 at 13:57

The crystal mark results look about right for the 120GB 840 I think - is this what you were expecting?

Not sure on the iops though

atomic7431 · 16 Mar 2014 at 15:01

David Bisset said:
The crystal mark results look about right for the 120GB 840 I think - is this what you were expecting?

Not sure on the iops though

thought the write speeds looked a bit low?
The iops is the main concern really, just cant understand why its so low.

wazza300 · 16 Mar 2014 at 16:12

install latest intel rapid storage drivers

creating some overprovisioning will help boost the iops (aslong as you can spare 10-20gb of space)

Ripshod · 16 Mar 2014 at 16:13

Don't know if it's still true but isn't ATTO best (more accurate) for ssd benches?

Paul2506 · 16 Mar 2014 at 17:50

hey m8 i got the 250gb version last week and i had same sorta readings at 1st..i know you loose about 20-25gb when you use (over provisioning) but i did that and then changed my (OS Optimization) to (Max Reliability) then turned (Rapid Mode) on and finally did the (performance optimization) . then my scores ended up like this.....

atomic7431 · 16 Mar 2014 at 21:56

wazza300 said:
install latest intel rapid storage drivers

creating some overprovisioning will help boost the iops (aslong as you can spare 10-20gb of space)

Latest drivers are installed, and i have had the drive a little while and im sure the results on an older system was not low like they are now and i wasnt overprovisioning then? plus i only have 32.7gb spare.

Ripshod said:
Don't know if it's still true but isn't ATTO best (more accurate) for ssd benches?

will try it as well.

Paul2506 said:
hey m8 i got the 250gb version last week and i had same sorta readings at 1st..i know you loose about 20-25gb when you use (over provisioning) but i did that and then changed my (OS Optimization) to (Max Reliability) then turned (Rapid Mode) on and finally did the (performance optimization) . then my scores ended up like this.....

cant use rapid mode on mine as its not a pro or evo just the 840. I can try reliability instead of performance, and i have os optiomized.

Will try a few things and see what happens, thanks for the input so far, so its not likely a fault then?

atomic7431 · 16 Mar 2014 at 22:42

Ok went through this link to see if I missed something and some of these I hadnt done and now my iops is good again. For some reason windows system recovery was on which I am sure I disabled as its the first thing I normally do lol.

anyways results speak for them selves and not had to provision the drive.

David Bisset · 17 Mar 2014 at 11:00

atomic7431 said:
thought the write speeds looked a bit low?
The iops is the main concern really, just cant understand why its so low.

No idea if they're a good reviewer, but....
benchies
Seem to be saying that your write speeds should be approximately the level you saw. Unless the reviewers have made a mistake too of course!

With the iops bit sorted now are you seeing different performance figures in crystal mark? I'm curious now

atomic7431 · 17 Mar 2014 at 11:04

just got to go out but i will do another test to check the write results

atomic7431 · 17 Mar 2014 at 19:04

As promised results with iops more normal and crystal mark scores.

Paul2506 · 17 Mar 2014 at 20:58

atomic7431 said:
As promised results with iops more normal and crystal mark scores.

glad to see you got it sorted m8

... i did have my drive set to max performance at 1st but for some reason my benchmarks went downhill :/ ...

but if u ever do decide to get a new SSD i really do recommend the evo..
these are my current scores atm... i also tried out ATTO Not sure whats what on the program tho lol

Dervious · 17 Mar 2014 at 21:33

Enabling rapid mode is like sticking a "Turbo" badge on the back of a 1.0L Nissan Micra.

Actually, it's more like testing the 0-60 time of a 1.0L Nissan Micra on a 1 in 3 hill (from top to bottom).