CrystalDiskMark is a useful benchmark to measure theoretical performance levels of hard drives and SSD’s.
We are using V3.0.3.
Crucial's BX500 is not the fastest when it comes to handling small bity files at a deepish queue depths although having said that the write performance is better than the read. Looking at the result screens it seems the Silicon Motion SM2258XT controller doesn't have a preference on what type of data it is handling