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OCZ RD400 PCIe NVMe SSD Review

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AS-SSD Benchmark

Alex Schepeljanski of Alex Intelligent Software develops the free AS SSD Benchmark utility for testing storage devices. The AS SSD Benchmark tests sequential read and write speeds, input/output operational performance, and response times.

AS-SSD Benchmark uses compressed data, so sequential file transfer speeds may be reported lower than with other tools using uncompressed data. For this reason, we will concentrate on the operational IOPS performance in this section.

This benchmark provided a surprise: although the performance results were great with Toshiba’s native driver, the results for the 4K subsections of the test with the Windows driver were terrible…the lowest we’ve ever recorded, in fact.

Toshiba RD400 512GB tdriver asssd

OCZ RD400 Results (Toshiba driver)

As the chart below shows, the RD400 acquits itself well with Toshiba’s NVMe driver, but falls to the very bottom of the pack if Windows’ internal driver is used, with a read speed of 107.1MB/s and a write speed of 1.91MB/s.

OCZ RD400 AS-SSD

In the next section, Benchmark Reviews tests transfer rates using ATTO Disk Benchmark.


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2 comments

  1. AMT

    Could we get a test comparison to load certain games, like load times comparisons to sata ssd?
    example, Star Citizen can have some pretty long load times with SATA SSD, would be nice to know if these drives help out much in these situations etc.

    1. Olin Coles

      While the storage device certainly has a lot to do with load time, the speed and architecture of RAM and CPU are also heavily involved. It would be disingenuous to compare one to another unless the user has the exact same system that we use for testing, which is very unlikely.

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