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.
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.
The results on the left, while testing in highly compressible data, are some of the best we have seen from any SSDs, much less mSATA. In comparing that to the testing with incompressible data on the right, we see that this specific memory doesn’t transfer incompressible data as well as a more premium synchronous type. From a typical SSD, we like to see the two sequential and 512K write results above 300MB/s, however, from an mSATA SSD, this is great. Even the Renice of which we just reviewed could only reach 90MB/s while testing incompressible data. The results we see here for the Memoright MS-701 are excellent.
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 confirms what we have seen in Crystal DiskMark while testing with incompressible data samples and adds some pretty decent disk access times along with that. Even the AS SSD Copy Benchmark results below displayed some excellent transfer speeds and times.
For those not familiar with AS SSD Copy Benchmark, it simply created three files (ISO, Program and Game) and moves each from one part of the mSATA SSD to another. The results consist of the time it takes to transfer each file as well as the high transfer speed reached.