ATTO Disk Benchmark is perhaps one of the oldest benchmarks going and is definitely the main staple for manufacturer performance specifications. ATTO uses RAW or compressible data and, for our benchmarks, we use a set length of 256mb and test both the read and write performance of various transfer sizes ranging from 0.5 to 8192kb. Manufacturers prefer this method of testing as it deals with raw (compressible) data rather than random (includes incompressible data) which, although more realistic, results in lower performance results.
No specifications were available at the time of this report but our suspected performance of 550MB/s read and 520MB/s write was dead on which is a great start for any mSATA SSD.
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. Many new SandForce Driven SSD owners who cant wait to test the performance of their SSD often grab this program and run a quick test, not realizing that they are testing with incompressible data rather than compressible data used in testing by manufacturers. We have provided compressible (oFill) results on the left with incompressible (random data) results on the right.
Given respect to the extremely high low 4k random write speeds of 98/95MB/s, these are the best results we have seen yet in a mSATA SSD. The low sequential and 512K write speeds of 205MB/s are a bit concerning as this is not indicative of today’s premium NAND flash memory.
Up until recently, AS SSD was the only benchmark created specifically for SSD testing and it uses incompressible data. AS SSD, for the most part, gives us the worst case scenario in SSD transfer speeds because of its use of incompressible data and many enthusiasts like to AS SSD for their needs. Transfer speeds are displayed on the left with IOPS results on the right.
AS SSD again identifies the MyDigitalSSD Smart SSD as being a ADATA SX300 and the scoring is not as high as we hoped although we don’t rely on this exclusively in our overall opinion. For an mSATA SSD, the Access Times are great and we are seeing a high of 47432 write IOPS which is decent.
We thought we would include the AS SSD Copy Benchmark as it closely imitates ‘true to life’ use. AS SSD simply creates three typical files (ISO, Program, Game) and moves them from one part of the SSD to another, monitoring top transfer speeds and time to complete. These are amongst the best we have seen yet.