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.
Random Reads
In the random read tests, all four of the tested threads displayed smooth increases in performance as the queue depth deepened with no nasty shocks. The drive speed ranges from 158,739 IOPS using a single thread up to 496,932 IOPS using four threads at QD8.
Random Writes.
In the 4K write tests the performance rose quickly from QD1 to QD2 for all four tested threads with the fastest rise seen in the four-threaded test. All four threads see the performance start levelling off from QD2 onwards up to the end of the test run at QD8.