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.
It is here that we actually see the difference between premium NAND, as we saw in the Kingston HyperX, and the value minded memory of the SSDVNow V+ 200. With asynchronous memory, the transfer speeds when moving highly incompressible data are much lower than that of Toggle mode or synchronous memory. A quick look at these HyperX results will clearly display the difference.
AS SSD BENCHMARK VER 1.64
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 while using SandForce Driven SSDs as they use compression in storage as discussed earlier. Many enthusiasts like to benchmark with AS SSD for their needs.
Once again, we see similar results in testing with incompressible data as AS SSD does. This may create hesitation in some which it shouldn’t. The simple truth is that, if you are just migrating to SSD from hard drive and have no ‘specific’ demanding tasks for the drive, nobody can tell the difference in any of today’s solid state drives in typical daily use.
The visible speed boost seen when migrating to a SSD from a hard drive, however, is incredible. For example, the average computer takes about a minute and a half to two minutes to start. The typical ‘SSD enhanced’ system takes 20 seconds.
It’s just that fast!