OCZ Vertex 4 SSD Revisited: 128GB and New Firmware

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ATTO Disk Benchmark

ATTO is another "quick and dirty" type of disk benchmark that measures transfer speeds across a specific volume length. It measures raw transfer rates for both reads and writes and graphs them out in an easily interpreted chart. We chose .5kb through 8192kb transfer sizes and a queue depth of 6 over a total max volume length of 256MB. ATTO's workloads are sequential in nature and measure raw bandwidth, rather than I/O response time, access latency, etc. This test was performed on blank, formatted drives with default NTFS partitions in Windows 7 x64.

ATTO Disk Benchmark
More Information Here: http://bit.ly/btuV6w

In the read tests, the 128GB Vertex 4 hung with the pack for the most part, posting speeds within shouting distance of the top performer, and it actually bested the other Vertex 4s by a hair in most of the transfers. Write performance is another story; in those tests, our SSD climbed up to over 191MBps quickly but then plateaued a notch behind the performance of the other drives in our test.

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