AS SSD is a SSD benchmarking software which uses incompressible data and quickly tests the performance of your drives. AS SSD can measure sequential, 4K read/write speeds, 4K 64 Thread read/write, and access time.
Again we see a clear differentiator from the Sandforce drives. AS SSD's incompressible data has always been where Sanforce's controllers took big hits, since they capitalize on compressibility to maximize throughput. The sequential write speeds far surpass any of the top-end Sandforce-equipped drives we've tested, and it stands alone in the 4K and 4K 64 Thread transfers. The write access time is also the best of any drive we've tested, although the read access times lag a bit.