Crystal Disk Benchmark is used to measure read and write performance through sampling of raw (0/1 Fill/compressible) or random data which is, for the most part, incompressible. For our testing today, we will concentrate on testing with incompressible data samples as there is no difference between the two tests for SSDs that do not rely on compression in storage.
Typically, we might see Crystal DiskMark results drop a bit when compared to ATTO and, although the high sequential reads did drop just a bit, CDM results are still above listed specifications.
As much as we like other utilities, AS SSD was the first benchmark released specific to SSD performance and is still the bread and butter of testing SSDs. Many enthusiasts prefer this software as it encompasses the worst case scenario in disk transfer speeds by utilizing incompressible data.
AS SSD displays some great sequential performance considering this program tests with completely incompressible samples. Our first look at IOPS is also encouraging with highs of 45180 IOPS read and 56290 IOPS write.
AS SSD Copy Benchmark is a very ‘true to life’ evaluation as it creates three files (ISO, Program and Game) and transfers them from one spot to another on the SSD. The results shown are the high trasfer speed reached and the time it took for the transfer. These are some of the best transfer speeds we have seen to date and it is very rare that we see all three test reach SATA 3 levels.