The next benchmark is the CrystalDiskMark. The software provides throughput data based on sequential reads and writes, and random (512K/4K/4KQD32) reads and writes of various sizes.

Below you see the drive's performance with incompressible (0Fill) data:

As you see below, the performance of Samsung's SSD is the same no matter if the stored/retrieved data is compressible or not:

The 850 PRO SSD beats the competition in the sequential reading and writing tasks. The drive also reads and writes 512K files fast, although 512KB random reading was a bit slower than the Crucial MX100 512GB SSD. Random reading of 4K files was superb, even in QD32: