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Kioxia Toshiba RC500 500GB SSD Review

The official random write figure for the drive is up to 390,000 IOPS (CrystalDiskMark 6 QD8 Threads 8). With our 4-threaded tests, the peak performance we saw was 129,074 IOPS at QD16, nowhere near the official number. However, as with the random read performance, looking at the test results save file from CrystalDiskMark 6 revealed a QD8 Threads 8 figure of 401,228 IOPS, some 11,228 IOPS faster than the official maximum.

4K Random Write v QD Performance comparison

The 4K random write performance of the drive is about average at a QD of 1 but as the queue depth deepens the RC500 starts to fall behind nearly all of the other drives in our chart.

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