SSD not running SATA 3

Novuake · Aug 10, 2013

Sooo I am out of ideas...
I am pretty sure my Vertex 4 is NOT running in SATA 3 as it should, I suddenly get less performance on it.

Unfortunately I never bothered to bench it previously, but Windows is reading it as 7.6 instead of the supposed 7.9.
Its also been giving a few random momentary lock-ups, that is how I picked it up.

Anyway, it is running in ACHI and in a SATA3 Intel controlled port.

SPecs in my profile.

Anyone have any ideas?

manofchalk · Aug 10, 2013

Use a benchmark better than Windows Experience Index

Try running CrystalDiskMark on the drive, if your getting Sequential Read/Writes above ~300MB/s then your on SATAIII.

Novuake · Aug 10, 2013

manofchalk :

Thanks, I NEVER do storage

. Running it now.

Novuake · Aug 10, 2013

Right, so then 375 Seq reads... Hmmm then why am I am i experiencing a drop in performance...

manofchalk · Aug 10, 2013

Is it capping at exactly 375MB/s?

Novuake · Aug 10, 2013

Let me run it again... Pretty much yeah, highest was 378, which is negligible.

manofchalk · Aug 10, 2013

Damn, it may actually be running on SATAII then.
SATA II has 3Gb/s of bandwidth, which translates to a theoretical 384MB/s. However I assumed that given some performance overhead it would be closer to 300Mb/s.

You may very well have an issue.

EDIT: We may very well have an issue.
I have the same board and the same drive, and running Crystal Disk Mark gets me 364MB/s Read and 356MB/s Write (Sequential).

However Crystal Disk Info tells me its registered to be on a SATAIII port, so I'm inclined to think its just the drive itself. Which isnt too surprising TBH, its an older drive and still on Firmware 1.4, later firmware revisions boosted performance dramataically. Its also at 60% capacity, which changes its performance profile or something.

Novuake · Aug 10, 2013

manofchalk :

Yip, I am not the paranoid kind... LOL
The Vertex 4 is supposed to get around 500Mbps.
Definitely something wrong.

http://www.bit-tech.net/hardware/2012/06/27/ocz-vertex-4-256gb-review/4

Novuake · Aug 10, 2013

Im aware of those. However mines on 1.5 and on 30% capacity, also on SATAIII port on my side according to CrystalInfo....

So I am annoyed! LOL...

manofchalk · Aug 10, 2013

Though those numbers could be on an empty drive.

Correction, those numbers are on an empty drive.
http://www.guru3d.com/articles_pages/ocz_vertex_4_ssd_review_with_1_5_firmware,11.html

Novuake · Aug 10, 2013

Well we are scoring 100 under, which is sizable. Once again. 30% capacity on my drive, and since the difference is NOTICABLE on my side, I am not willing to dismiss it without an attempt at fixing it...

Novuake · Aug 10, 2013

Now that I think about it, this could be after a BIOS update I did a while ago...
Dag nabit...

4745454b · Aug 10, 2013

Due to the 8/10bit thing, SATA II is capped at 300MBps. If you get anything over 300MBps, you are on a SATA III port.

I had this happen when I got and benched my Samsung 840pro. I had it on a SATAIII port, but not the Intel one. Double check the port and make sure you are using an Intel and not third party port. Reason being those other ports are connected sometimes with a PCIe link, which will limit you to 500MBps, and again due to overhead you'll get less. I don't remember what I got when I used my marvell port, but high 300s is what I remember. (write was even worse, around 250MBps.)

Novuake · Aug 10, 2013

DEFINITELY using Intel, confirmed, and it has not moved since install, so no chance of it going in a different port suddenly anyway.

I am off for a beer or 6, talk later guys. Ideas welcome.

Novuake · Aug 11, 2013

Right so just as a test I moved it to one of the ASmedia SATA3 ports and then to the SATA2 ports.
Getting pretty much the same speeds on either with a tiny bit slower on the SATA2s...

DEFINITELY something wonky here.

4745454b · Aug 11, 2013

Update your SATA drivers? SMART report ok?

Novuake · Aug 11, 2013

Health 100% according to multiple test, including SMART.
Updating SATA drivers now.

EDIT : No change...

Novuake · Dec 2, 2013

LOL yeah this ain't solved. BUUUUT its ok, I will live with it for now... Samsung 840 Pro here I come... At some point... When I am willing to sacrifice my current Windows install.

4745454b · Dec 2, 2013

Just test the 840pro. What speeds do you get?

Novuake · Dec 2, 2013

4745454b :

Have not purchased it yet.

SSD not running SATA 3

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