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