|OCZ RevoDrive X2 PCI-Express SSD|
|Reviews - Featured Reviews: Storage|
|Written by Olin Coles|
|Friday, 19 November 2010|
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ATTO Disk Benchmark
The ATTO Disk Benchmark program is free, and offers a comprehensive set of test variables to work with. In terms of disk performance, it measures interface transfer rates at various intervals for a user-specified length and then reports read and write speeds for these spot-tests. There are some minor improvements made to the 2.46 version of the program that allow for test lengths up to 2GB, but all of our benchmarks are conducted with 256MB total length. Additionally, ATTO Disk Benchmark offers a queue depth range of 2-10, however our tests use the default value of 4. ATTO Disk Benchmark requires that an active partition be set on the drive being tested, which is formatted to the NTFS file system. Please consider the results displayed by this benchmark to be basic bandwidth speed performance indicators.
Our basic bandwidth speed tests begin with the OCZ RevoDrive X2 SSD installed onto the X58-Express motherboard, as the ATTO Disk Benchmark tool performs file transfers ranging from 0.5 KB to 8192 KB. The 240GB model we received reveals 831 MB/s maximum read speed that plateaus from 128-8192 KB file chunks at a queue depth of 4, and 688 MBps peak write bandwidth which plateaus from 64-8192 KB.
OCZ's reviewer guide suggests that ATTO be tested with a queue depth of 10, which offered slightly different results:
At QD-10 the OCZ RevoDrive X2 improves 4 MBps to 835 MBps maximum read speed that plateaus from 128-8192 KB file chunks, and a nearly identical 687 MBps peak write bandwidth plateaus from 64-8192 KB. Since all previous ATTO tests were conducted with the default queue depth of 4, here's how the collection stacks up:
Although not charted above, a pair of SandForce-driven SF-1200 SSDs configured with 128K-stripes in a RAID-0 set produced 579 MBps peak read speeds, and 545 MBps peak write bandwidth.
In the next section, Benchmark Reviews tests sequential performance using the CrystalDiskMark 3.0 software tool...