CrystalDiskMark

In our default 1GB random test, sequential read performance at QD32 jumps above the drive’s rated 545MB/s speeds to 556MB/s, while sequential writes come in below the rated 525MB/s spec at 513MB/s. Meanwhile, random 4K reads get 374MB/s while random 4K writes achieve 288MB/s, and the numbers for both sequential and random performance are still lower than the results from our OCZ Trion 150 480GB review. Both drives are using 15nm TLC NAND flash, with the main difference being that the Trion 150 uses a Toshiba controller while the WD Blue uses a Marvell controller.



In the 1GB 0Fill test, the drive performs very similarly across the board with a small margin of a few megabytes per second in each category, though sequential read performance is still above the rated 550MB/s specification.