AS SSD is a great free tool designed just for benching Solid State Drives. It performs an array of sequential read and write tests, as well as random read and write tests with sequential access times over a portion of the drive. AS SSD includes a sub suite of benchmarks with various file pattern algorithms but this is difficult in trying to judge accurate performance figures.
Under the more stringent AS SSD benchmark, those stunning read/write figures we saw in the ATTO benchmark drop to below the official numbers. The drive performs very well at deep queue depths as can be seen from the 4K-64Thrd results.