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Vertex 3 much slower than it should be?

Tags:
  • SSD
  • NAS / RAID
  • Vertex
  • Storage
Last response: in Storage
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March 21, 2012 7:12:22 AM

Looks like something is wrong with my Vertex 3 or drivers. Its on AMD 970 chipset, set to SATA 3. Its set to RAID mode (but not in an array) as I have 2xHDD in RAID 0.

Have newest official AMD drivers on Win 7 64bit.

This are results:

CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 204.867 MB/s
Sequential Write : 139.852 MB/s
Random Read 512KB : 202.286 MB/s
Random Write 512KB : 139.299 MB/s
Random Read 4KB (QD=1) : 18.217 MB/s [ 4447.4 IOPS]
Random Write 4KB (QD=1) : 30.969 MB/s [ 7560.7 IOPS]
Random Read 4KB (QD=32) : 23.255 MB/s [ 5677.4 IOPS]
Random Write 4KB (QD=32) : 72.439 MB/s [ 17685.2 IOPS]

Test : 100 MB [C: 25.6% (28.6/111.7 GB)] (x2)
Date : 2012/03/20 12:35:33
OS : Windows 7 Enterprise Edition SP1 [6.1 Build 7601] (x64)

Any idea what should I do?

More about : vertex slower

March 21, 2012 7:30:30 AM

And here are results with RAID turned off and SSD connected as ACHI:

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 261.664 MB/s
Sequential Write : 137.428 MB/s
Random Read 512KB : 249.620 MB/s
Random Write 512KB : 141.393 MB/s
Random Read 4KB (QD=1) : 19.655 MB/s [ 4798.7 IOPS]
Random Write 4KB (QD=1) : 32.506 MB/s [ 7936.1 IOPS]
Random Read 4KB (QD=32) : 156.746 MB/s [ 38268.2 IOPS]
Random Write 4KB (QD=32) : 100.587 MB/s [ 24557.3 IOPS]

Test : 100 MB [C: 25.9% (28.9/111.7 GB)] (x2)
Date : 2012/03/21 9:28:59
OS : Windows 7 Enterprise Edition SP1 [6.1 Build 7601] (x64)
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March 21, 2012 11:56:26 AM

Possibly try a different SATA cable and a different SATA port?
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March 21, 2012 11:58:01 AM

Tried different SATA cable, but same manufacturer, same results.

On sata cables says 6Gbps/3Gbps (those came with motherboard)
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March 21, 2012 12:03:19 PM

how did you install the OS? is the drive a clone of another drive or a fresh install?
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March 21, 2012 12:06:01 PM

Should this note when benchmarking say:


* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

shouldnt it say 600? can someone with SATA 3 try test and check text?
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