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.
The Plextor M5 Pro got off to a good start and posted very high sequential read and write speeds. Its sequential write performance was 13% faster than the even the fastest SandForce drive. Performance on the 4k workload was a little shaky as it posted fast read speeds but below par write speeds. On the 4k, 32 queue depth work load, which is a more accurate representation of everyday usage, it redeemed itself by recording speeds that surpassed every SandForce drive.