WD_Black SN770M 2TB SSD Review

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.

The WD_Black SN770M has no problem dealing with our 70/30 read/write tests either using a single thread or with four threads. With a single thread, the drive produces 19,508.9 IOPS (79.908MB/s) at QD1 climbing to finish the test run at QD32 with 215,639 IOPS (883.257MB/s). Using four threads the drive climbs from 78,356.5 IOPS (320.948MB/s) at QD1 to 549,147 IOPS (2,249.31MB/s) at QD32.

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