New SSD - Incorrect Specs

On Holiday · 10 Feb 2013 at 18:39

Crystal Disk Mark said:
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CrystalDiskMark 3.0.2 Shizuku Edition x64 (C) 2007-2013 hiyohiyo
Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 280.894 MB/s
Sequential Write : 267.017 MB/s
Random Read 512KB : 266.012 MB/s
Random Write 512KB : 258.031 MB/s
Random Read 4KB (QD=1) : 28.404 MB/s [ 6934.6 IOPS]
Random Write 4KB (QD=1) : 75.481 MB/s [ 18427.9 IOPS]
Random Read 4KB (QD=32) : 203.358 MB/s [ 49648.1 IOPS]
Random Write 4KB (QD=32) : 196.557 MB/s [ 47987.6 IOPS]

Test : 1000 MB [C: 29.1% (135.4/465.8 GB)] (x5)
Date : 2013/02/10 18:35:53
OS : Windows 7 Ultimate Edition [6.1 Build 7600] (x64)

SSD is a Samsung 840 Series 500GB.

On the back of the box it claims;

Sequential Read: 540MB/s
Sequential Write: 330MB/s
Random IOPS Read: 98,000
Random IOPS Write: 70,000

Clearly the above scores are well below what it's claimed to have. Any suggestions, or should I return it?

Randomface74 · 10 Feb 2013 at 18:42

sata2 vs sata3?

wazza300 · 10 Feb 2013 at 18:42

what motherboard are you using? seemsliek its running sata2 speeds

make sure your plugged into sata3 ports

On Holiday · 10 Feb 2013 at 18:44

ASUS P9X79 PRO.

I'm sure it's plugged in a 6GB/s port, but will check.

Quick question though;
Which driver do I need for Sata 6GB/s?
http://support.asus.com/download.aspx?SLanguage=en&p=1&m=P9X79+PRO&hashedid=ITjeO1wq0nRUPfej

There's 10 to choose from, not sure if it's Asmedia, Marvell or Intel RST etc etc.

wazza300 · 10 Feb 2013 at 18:47

You don't need any,but the Intel rst drivers will improve speeds slightly,your on sata2 ports

Ripshod · 10 Feb 2013 at 18:58

ATTO is better for benching SSDs that Crystal. I used to get low results before I was put straight.

On Holiday · 10 Feb 2013 at 19:02

**** !! Haha, how noob of me!

The 4 SATA Ports I thought were 6GB/s turned out to be 3GB/s.

-----------------------------------------------------------------------
CrystalDiskMark 3.0.2 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 526.790 MB/s
Sequential Write : 325.493 MB/s
Random Read 512KB : 469.017 MB/s
Random Write 512KB : 322.319 MB/s
Random Read 4KB (QD=1) : 30.244 MB/s [ 7383.8 IOPS]
Random Write 4KB (QD=1) : 95.063 MB/s [ 23208.7 IOPS]
Random Read 4KB (QD=32) : 280.279 MB/s [ 68427.6 IOPS]
Random Write 4KB (QD=32) : 254.596 MB/s [ 62157.1 IOPS]

Test : 1000 MB [C: 29.2% (136.0/465.8 GB)] (x5)
Date : 2013/02/10 19:01:57
OS : Windows 7 Ultimate Edition [6.1 Build 7600] (x64)

Much better, cheers

wazza300 · 10 Feb 2013 at 19:04

thats better,id install the rst drivers if you havnt already,as they improve speeds a little

also agree on atto benchmark