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OCZ Vertex Limited Edition (LE) 240GB Custom SandForce SSD (Page 8)

By Chris Ramseyer from Jun 29, 2010 @ 9:47 CDT
TweakTown Rating: 92%Manufacturer: My Digital Discount

CrystalDiskMark

Version and / or Patch Used: 3.0 Technical Preview
Developer Homepage: http://crystalmark.info
Product Homepage: http://crystalmark.info/software/CrystalDiskMark/index-e.html
Download here: http://crystaldew.info/category/software/crystaldiskmark

CrystalDiskMark is a disk benchmark software.

Key Features:-

* Sequential reads/writes
* Random 4KB/512KB reads/writes
* Text copy
* Change dialog design
* internationalization (i18n)

Note: Crystal Disk Mark 3.0 is not available to the public yet, but the Technical Preview does allow us to test 4K performance at queue depths of 4 and 32 in addition to 1. The current release Crystal Disk Mark only shows us QD 1.


Read Tests

content/3/3/3372_18.png

Now we are starting to see some things get interesting. The Vertex 2 has higher sequential read speed, this we proved in HD Tune a few pages back and hasn't changed. The Vertex LE appears to give up some sequential performance to gain additional performance at higher queue depths. Here we see the LE reading around 10MB/s faster than the Vertex 2 drives at a QD of 4. Once we get to a QD of 32 the LE just walks away from the Vertex 2 drives with a 45MB/s increase over the other 240GB drive.

Let's keep an eye on this when we get to the real world tests. For a desktop computer to get up to a queue depth of 32 is quite uncommon unless the user is doing some serious multitasking. In the enterprise world the above statement is false, particularly in high transaction environments.

Write Tests

content/3/3/3372_19.png

Unfortunately we didn't see the same types of gains in the 4K write tests. Both the LE and Vertex 2 use the same High 4K IOPS firmware and the performance is nearly identical here.

That concludes our synthetic benchmarks; let's take a look at the real world tests and see if what we learned from the synthetics carries over to the real world.

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