We used CrystalDiskMark 8’s custom settings to test the 4K 70/30 mixed read/write performance of the drive through a range of queue depths using a single thread and four threads.
Using a single thread, the Crucial T705 with Heatsink performance climbs in a fairly smooth curve from 26,861 IOPS (110.026MB/s) at QD1 up to 176,819 IOPS (724.25B/s) at QD16 where the performance begins to level off, finishing the test run at 177,274 IOPS (726.11MB/s) at QD32.
Switching to four threads, the performance goes from 108,733 IOPS (445.37MB/s) at QD1 up to 509,137 IOPS (2085.42MB/s) at QD16 where the performance again starts to level off, finishing the test run at QD32 with 508,681 IOPS (2083.56MB/s).