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.
The BG5 seemed to struggle a bit with the more demanding AS-SSD benchmark with Sequential read/write figures of 3,117MB/s and 2,669MB/s respectively. Its write score of 2418 is stronger than its read score but both put the drive in last place in the results table.