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 surprises. At QD1 the performance ranges from 21,101 IOPS (86.43MB/s) using a single thread up to 84,754 IOPS (347.15MB/s) using four threads. At QD8 performance ranges from 160,869 IOPS (658.92MB/s) with a single thread up to 502,760 IOPS (2,059MB/s) with four.
Random Writes
In the 4K write tests the performance rose sharply from QD1 to QD2 for all four tested threads with the fastest rises seen in the three and four-threaded tests. However, all four threads saw the performance levelling off from QD4 until the end of the test at QD8.