Phison PS5031-E31T 2TB Technical Preview (E31T Controller)

We used CrystalDiskMark 8‘s custom settings to test the 4K random read performance of the drive through a range of queue depths. The setup for the tests is listed below.

Transfer Request Size: 4KB, Outstanding I/O: 1-32.

Using our 4-threaded test results we couldn't get close to the official maximum random read figure of 1,300,000 IOPS, the best we saw was 541,175 IOPS at QD32.

4K Random Read v QD performance compared

We may not have got close to the maximum official random read figure with our testing but that doesn't stop the PS5031-E31T from being the fastest Gen 5 drive we've seen to date in this test, as It tops the charts at all the tested queue depths.  But the QD1 result is particularly impressive, even more so when you realise this is a controller aimed at the mainstream market and not a high-end offering like the drives it's up against in this table.

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