We used CrystalDiskMark 8‘s custom settings to test the drive's 4K random read performance through a range of queue depths. The setup for the tests is listed below.
Transfer Request Size: 4KB, Outstanding I/O: 1-32.
In our 4K random read tests, we couldn't quite reach the maximum official rating of 390.000 IOPS with a test result of 367,752 IOPS (1,504.26MB/s) at QD32.
4K Random Read v QD Performance
At QD1 the P41 Plus sits in the top 10 of the results chart but as the tested queue depth deepens the drive drops down the chart until at QD32 it sits in the bottom section of the results chart.