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CrystalDiskMark is a useful benchmark to measure the theoretical performance levels of hard drives and SSDs. We are using v8.0.
In the CrystalDiskMark 4K QD1 test, the SSD990 EVO Plus has a slightly faster read result than the SSD990 Pro but the older drive has a slightly better write performance.
With the CrystalDiskMark 8 default test, we could confirm the official Sequential performance figure of 7,250MB/s with a test result of 7,296MB/s but came up short of the official 6,300MB/s maximum write figure at 5,827MB/s. Using compressed data the write performance increased to 6,081MB/s, still shy of the official maximum.
Those Sequential figures of 7,296MB/s (reads) and 5827MB/s (writes) see the drive in a mid-table position.
Peak Performance profile
When it came to tested 4K performance our results scores came nowhere close to the official maximums. Samsung rates the 2TB 990 EVO Plus at up to 1,000,000 IOPS for reads and up to 1,350,000 IOPS for writes. The best we saw using the default Peak Performance Profile was 778,923 IOPS for reads and 577,895 IOPS for writes, figures that just get the drive into the top 10 of our result chart.
Using CrystalDiskMark 8's Peak Performance Profile we could, once again confirm the official Sequential read figure with a test result of 7,281 while write performance was way short of the maximum 6,300MB/s at 6,077MB/s.
Real World profile
Using the Real World Profile benchmark, the drive landed in a mid-table spot with a read result of 4,115MB/s with writes producing a much stronger 5,182MB/s.
