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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.
The 2TB CRAS C930 read score of 65.16MB/s in CrystalDiskMark 8's 4K QD1 test sees it near the bottom of the results chart as the second slowest we've seen. It's write result of 227.21MB/s is the third slowest we've seen.
A glance at the benchmark result screens shows that using the default test, we could confirm both official Sequential figures (7,400MB/s reads, 6,800MB/s writes) with test results of 7,459MB/s for reads and 6,970MB/s for writes.
The sequential read test result sees the drive in the fifth place on our result chart, although its write score of 6,970MB/s is the fastest we've seen for a Gen4 drive to date in this particular test.
Peak Performance Profile
The drive is officially rated at up to 1,000K IOPS for both random reads and writes. Using the Peak Performance profile of CrystalDiskMark8, we couldn't hit these maximum figures; the best read figure from the default test was 772,590.33 IOPS, while the best write figure was 668,375.49 IOPS.
As with the default test, we could confirm both the official maximums (7,400MB/s reads, 6,800MB/s writes) for Sequential performance with test results of 7,461 MB/s for reads and 6,969MB/s for writes.
Real World Profile
In the Real World profiles test, the drive's Sequential read result of 3,496MB/s sees it in the bottom half of the results table, but its write performance is much stronger at 5,924MB/s.
