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 stable with files larger than 64KB, except from the write speed with 4MB files. The reading speed hit the 563MB/s and the writing speed reached the 460 MB/s.

Let's take the performance with 4KB files. The M600 128GB SSD was not very fast in the reading part, a behavior we had also seen when we reviewed the Crucial MX100 and the M550 SSDs:

Writing of small 4KB files was faster:

Going further to larger 2MB file transfers, the Micron SSD was very fast in the read test, but lagged behind the competition in the write part: