ADATA Legend 970 2TB SSD Review

We used CrystalDiskMark 8‘s custom settings to test the 4K random write performance of the drive through a range of queue depths. The setup for the tests is listed below.

Transfer Request Size: 4KB, Outstanding I/O: 1-32.

As with the random read results with our four threaded random write tests, we couldn't get close to the official maximum of 1,400K IOPS. The best we saw from testing was 457,341 IOPS (1,873MB/s) at QD16 before the performance dropped back ever so slightly to finish the test run at 457,086 IOPS (1,872MB/s).

4K Random Write v QD Performance.

At QD1 the drive sits in a mid-table position but at QD2 it has fallen to the foot of the table. However, at QDs 4 and 32 its performance sees it moving up a spot.

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