Also, CrystalDiskMark measures IOPS (Input/Output Operations-per-second), which is similar but also a different measure of disk speed. Usually, an OS wouldn't have that deep of a queue, but the Q1T1 does mimic a singular request. The default depth is pretty high for the test.
CrystalDiskMark tests random reads and writes both as queued requests and single requests. Random Read and Write tests are as important, if not more so, as many SSDs can deliver fast maximum continuous read and writes but much less so for random small data blocks. This is useful but only measures one aspect of an SSD, and doesn't necessarily mimic accurately how most disk interactions occur. So why am I always complaining about BlackMagic Disk Speed TestīlackMagic's Disk Speed Test only tests one thing, continuous throughput.
While it isn't a direct port, it's heavily inspired by the famed and loved Windows utility, CrystalDiskMark. The first commenter on FaceBook pointed out that we finally have a good disk benchmark utility AmorphousDiskMark. The drive produced a best random write test result of 444,940 IOPS, a little shy of the official maximum of 450,000 IOPS.Awhile back, I made a video about USBc and the classic Mac Pro but lamented yet ago the terrible benchmarking on macOS. Similarly using the Peak Performance profile to gauge the 4K performance of the drive we could confirm the official random read maximum of 460,000 IOPS with a test result of 466,033 IOPS. Using the more advanced CrystalDiskMark 8 in its default setting as well as the Peak Performance and Real World profiles saw the Sequential test results confirm the official 3,500MB/s reads and 3,000MB/s writes with the best results of 3,617MB/s and 3,190MB/s for reads and writes respectively. We could also confirm the official Sequential performance figures for the drive, up to 3,500MB/s and up to 3,000MB/s for reads and writes respectively with a best test read performance of 3,618MB/s and writes of 3,199MB/s.ĬrystalDiskMark 8 Peak Performance profile. Looking at the two benchmark screens, it's clear that the in-house WD controller doesn't have a preference for the type of data it's being asked to handle. In the CrystalDiskMark QD32 T1 test, the Blue SN570 shows an improvement in read performance over the previous Blue SN550 but the older drive has the edge when it comes to writes. CrystalDiskMark is a useful benchmark to measure theoretical performance levels of hard drives and SSD’s.
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