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.
ATTO performance of 551MB/s read and 510MB/s write match specifications very closely but, more importantly, notice how fast performance has picked up starting right at the 4K level with results of 367MB/s read and 314MB/s write transfer speeds. Whether or not this is the result of nCache cannot be confirmed, however, these are the most well rounded ATTO benchmark results we have seen to date. What this translates to is quicker visible start, system and application performance.
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. In the SanDisk Extreme II SSD, performance results are very similar whether we test with compressible or incompressible data and, for this reason, results are displayed utilizing incompressible data.
Once again, we are seeing very string results, although we cannot state that any 4K difference attributable to nCache can be seen here.
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. Once again, we will display the standard system on the left with optimized on the right.