The next benchmark is the CrystalDiskMark. The software provides throughput data based on sequential reads and writes, and random (512K/4K/4KQD32) reads and writes of various sizes.

We start with the older version of the CrystalDiskMark, in order to compare the DC400's performance with other SSDs we have tested so far. Kingston's drive reached the 542 MB/s read and 493MB/s write in the standard sequential write test. The Random 4K performance on the drive was 33 MB/s read and 103MB/s write.

The results were not exactly the same when we ran the test again set to 0Fill mode. There was a big boost in the 4K read (127.4 MB/s) and 4K QD32 (399 MB/s) speeds:

The latest version of the CrystalDiskMark utility returned performance figures close to those quoted by Kingston. Sequential Q32T1 read/ write speeds were 561 MB/s and 522 MB/s , respectively. The drive handles reasonable deep queues of 4K data pretty well, mainly in the write part. It performs well with 4K writes and the Phison controller seems to prefer reading of compresses data, especially when dealing with 4K transactions:

The charts you see below are based on the data coming from CrystalDiskMark v3.0.4. The DC400 960GB ranks pretty well in the first chart (sequential read speed) as well as in the 4K random read chart, in both QD1 and QD32 tests:

In the sequential and 4K/4KQD32 write speeds of the DC400 were also fast: