The next software we used was the ATTO Disk Benchmark. The tool measures storage systems performance with various transfer sizes and test lengths for reads and writes. The benchmark performs file transfers ranging from 0.5 KB to 8192 KB. ATTO can be adjusted to do overlapped I/O, in a variety of queue depths. We tested the SSD using the benchmark's default settings, using 256KB file length performance and QD4. ATTO probably gives the most accurate results for compressible read and write data.

As you see above the drive's reading and writing performance with compressible files was consistent with files larger than 128KB. The reading speed reached the 550 MB/s and writing topped at 530 MB/s.

Below you see where the R7 SSD stands compared to some other SSDs we have tested so far. Obviously, the SSD is not the fastest you can when it writes or reads small files, but its adequately fast with larger files.