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.

In the write test the Kingston drive reached over 530MB/s in the block sizes larger than 1MB. The read test was more than 500MB/s - our max was 513MB/s with 2MB files.

The drive's sequential read speed is higher with larger transfer sizes. Reading of small files (4KB) was average and the drive performed as fast as the the Hyper X 120GB SSD and the larger OCZ Vertex 3 MAX IOPS 240GB:

On the other hand, the SSDNow300V was very fast when it was writing such small files (compressible):

Going further to larger file transfers, the SSDNow300V drive is not the fastest you can find during reading but delivers a great performance in the writing tasks: