CrystalDiskMark is an easy-to-run and quick utility to use to gauge a drive’s performance. It measures sequential read and write performance and random read and write speeds of random 4KB, 4KB (queue depth 32) and 512KB data.
Overall performance on CrystalDiskMark was pretty impressive. Sequential read and write speeds were amongst the best, but its performance took a slight dip in the 512k and 4k work loads. However, on the 4k, 32-process queue depth work load, which is arguably the most accurate representation of heavy everyday usage, the OCZ Vector stunned us with its blazing read performance - 367.7MB/s, a whopping 34% faster than the second-placed Plextor M5 Pro.