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.
Specifications list 550MB/s read and 530MB/s write performance and ATTO results are just about exact at 555MB/s read and 528MB/s write. Having these same numbers result in the transfer of highly incompressible data will be very convincing as to the Vector’s 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 OCZ Vector SSD, performance results are very similar whether we test with compressible or incompressible data and, for this reason, results are displayed utilizing incompressible data.
This analysis was completed using random, or highly incompressible, data and these results are amongst the best we have seen to date. In fact, these are very similar to the Samsung 840 Pro SSD we recently reviewed.
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.
Lightning fast disk access times are highlighted by great performance and a Total Score above 1000 points which is what we like to see. Taking a look at the IOPS, we can see that 4k random IOPS of 92006 read and 76595 write are just under that of specs.
This AS SSD Copy Bench result is, once again, almost identical to the Samsung Pro and one of the two top results we have seen to date.