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.
Listed specifications of 500MB/s read and 450MB/s write do not compare to our results of 559MB/s read and 519MB/s write which are typical of the LSI SandForce processor at full speed. This is an excellent start for the Intel 330.
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.
Even though Intel’s premium synchronous NAND flash memory is in use, we start to see the lower price point reasoning in the 330’s ability to work with incompressible data, results of 160MB/s high sequential write performance being just a bit short of the norm. Low 4k random write transfer speeds of 84MB/s are very good.
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 the low result when transferring incompressible data and also expands with relatively low IOPS results and disk access time results that is a bit slower than we see of many SSDs today. This translates to slower file transfer times as can be seen specifically with our AS SSD Copy Benchmark shown below.
The AS SSD Copy Benchmark is a very straightforward test, in that, it creates three files (ISO, Program and Game) and transfers each from one part of a disk to another. The results here are rather flip flop as the initial ISO result is excellent but the transfer of the Program showed substandard performance resulting in a longer transfer time.