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.
The picture presented here has been consistent with the SM2246EN controller for all reports. As much as we may wish to see higher write performance equal to that of upper-tier SSDs today, this SSD does a great job of pushing up its data transfer speeds right from the 4K file size. In addition, the gradual and steady progression of performance displays the characteristics of an excellent solid state drive.
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. Performance is virtually identical, regardless of data sample so we have included only that using random data samples.
We have had some pretty interesting discussions with industry peers about this controllers performance, the central theme very evident here. As much as write performance may not be above the 500MB/s mark, the performance shown with incompressible data is just as strong as that of compressible data and 440MB/s for a high sequential write transfer speed is excellent.
The toughest benchmark available for solid state drives is AS SSD as it relies solely on incompressible data samples when testing performance. For the most part, AS SSD tests can be considered the ‘worst case scenario’ in obtaining data transfer speeds and many enthusiasts like AS SSD for their needs. Transfer speeds are displayed on the left with IOPS results on the right.
The high sequential reads and writes are well represented once again and AS SSD gives us the opportunity to get our first look at IOPS highs of 70396 read and 64057 write; these being decent. Similarly, ISO and Game transfer speeds are where we would like to see them in this AS SSD Copy Bench test:
AS SSD Copy Bench is a very straightforward ‘true to life’ benchmark where three files are moved from one part of the SSD to another, the end result being the maximum speed in that transfer, as well as the time it takes to move that file.