Samsung 990 Pro 2TB Review

We used CrystalDiskMark 8 to test the random performance of the drive at lower queue depths (QD1 – QD8 where most of the everyday workloads occur) using 1 to 4 threads.

4K Random Read v QD Performance compared.

Interestingly Samsung gives two sets of 4K performance figures for the drive. One set is for QD1 with a single thread and the other is for 16 threads at QD32. Taking the official single thread figure of 22,000 IOPS for reads, our best test result of 19,883 IOPS was pretty close.

4K Random Write v QD Performance compared.

While the tested QD1 read figure was not that far off the official maximum, unfortunately, the same can't be said of the QD1 T1 write test result of 56,849 IOPS which is some way off of the official 80,000 IOPS.

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