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WD Black SN770 1TB SSD Review

Simon Crisp February 2, 2022 Featured Tech Reviews, Reviews, SSD Drives

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.

The WD Black SN770 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 21,918.5 IOPS (89.778MB/s) at QD1 climbing to finish the test run at QD32 with 141,079 IOPS (577.859MB/s). Using four threads the drive climbs from 84,425.2 IOPS (345.806MB/s) at QD1 to 389,599 IOPS (1599.2MB/s) at QD32.

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