OCZ Z-Drive R4 PCIe SSD Performance Preview

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ATTO Disk Benchmark

ATTO is another quick-take type of synthetic 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 10 over a total max volume length of 256MB. ATTO's workloads are sequential in nature and measure raw bandwidth, rather than IO response time or access latency. This test was performed on blank, formatted drives with default NTFS partitions in Windows 7 x64.

ATTO Disk Benchmark

Fusion-io ioXtreme 80GB PCI Express SSD

Fusion-io ioDrive 160GB

LSI WarpDrive 300GB

OCZ RevoDrive 3 X2

OCZ Z-Drive R4

What ATTO shows us is that, at very small transfer sizes (.5  - 4K), the Z-Drive R4 is pretty much on par with competitive solutions. Again, this test is what we'd call a light workload, with a queue depth of only 10.  However, as transfers increase past 8K or so, the Z-Drive R4 once again begins to blow everything else out of the water.  We were actually able to slightly exceed OCZ's max read and write bandwidth specs and topped out at 2.92GB/s and 2.71GB/s for reads and writes, respectively.  The Z-Drive R4 has exhibited far and away the best performance we've seen in every test we've thrown at it thus far.  Previously, the best ATTO scores we've seen came from the OCZ RevoDrive 3.  The Z-Drive R4 more than doubled its performance.  Simply impressive.

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