The IOMeter benchmark is run by using workstation and database patterns for queue depths (outstanding I/Os) representing very light and moderate loads. Iometer is both a workload generator (that is, it performs I/O operations in order to stress the system) and a measurement tool (that is, it examines and records the performance of its I/O operations and their impact on the system). The app's ability to bombard drives with an escalating number of concurrent IO requests also does a nice job of simulating the sort of demanding multi-user environments that are common in enterprise applications.
Overall, the IOPS delivered by the Crucial MX500 500GB SSD were high enough to rank the drive in the first positions in the graph below. The drive outperformed the 850 EVO in both read and write tasks, and its performance was comparable to the BX300's: