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.
Performance result highs of 556MB/s read and 531MB/s write are some of the highest we have seen yet and meet manufacturer specifications.
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.
The overall performance of both benchmarks is great but, in examining the right result while testing in incompressible data, the high sequential and 512k write result might be just a bit low. The 4k random write result of 110MB/s is the highest we have seen yet in a mSATA SSD and definitely in the top 3 of all typical form factor SSDs we have looked at. Such a result could easily see the Atlas top out in its testing with PCMark Vantage HDD Suite.
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 once again confirms some great high sequential read performance, however, once again the write performance is a bit low and the 4k random write has dropped down just over 30MB/s. When we followed through with AS SSD Copy Bench testing, the result was one of the best we had seen yet with all three transfer speeds being in the 6Gbps zone.