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.
Our first look at performance is definitely a plus with high performance of 554MB/s read and 526MB/s write as compared to listed specifications which only seak to 450MB/s for both read and write performance.
Crystal Disk Benchmark is used to measure read and write performance through sampling of highly compressible data (oFill/1Fill), or random data which is, for the most part, incompressible. In the V300, we have displayed testing using highly compressible data on the left, compared to that of incompressible on the right.
CDM results are still well above those listed by Kingston and we see a drop in write performance when testing in highly incompressible data which is typical of LSI SandForce Driven SSDs. Although there are a few applications that might demand the highest result when transferring incompressible data such as music, movies and pictures, many seem to get caught up in numbers alone forgetting that the transfer of compressible data such as OS and application files always precedes that of the task at hand.
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 results relate much the same and we weren’t really impressed with the low Score, however, typically, we don’t rely on this alone. A quick look at the AS SSD Copy Bench below displays some excellent results and many believe the Copy Benchmark test might be one of the most important characteristics seen from this software.