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 pretty stable with files larger than 128KB. Reading speed hit the 557 MB/s with 8K files while writing was 532 MB/s.

However, the drive was slower in the sequential reading of small files (4KB or smaller) staying behind the competition:

The writing of small, compressible files was also average:

Going further to larger file transfers, the drive was pretty fast in both reading and writing tests, with a performance close enough to the Kingston Hyper X 120GB SSD: