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.
When it comes to dealing with the small bitty files of everyday use, the drives read performance isn't very impressive, however the write performance is strong. Once the drive is pushed the read performance comes back on track as can be seen by the 4K-64Thrd results.