CrystalDiskMark is a synthetic benchmark that tests both sequential and random small and mid-sized file transfers. It provides a quick look at best and worst case scenarios with regard to SSD performance, best case being larger sequential transfers and worse case being small, random transfers.
In the CrystalDiskMark benchmarks, the Samsung SSD 830 Series offered the best sustained performance and remained competitive with the other drives throughout. Perhaps the most interesting result is in the 4K QD32 test, where the Samsung SSD 830 Series simply blows past all of the other drives in terms of Read throughout. Although its 4K random write performance continues to somewhat trail the SandForce-based drives.