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.
Taking a look at our initial ATTO performance, we can see that the Acer has reached high transfer speeds of 942MB/s read and 687MB/s write which are the highest we have ever seen from any ‘non-custom’ portable system.
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. For these tests, we will display CDM results using highly incompressible data as the results with this specific SSD are almost identical.
Although performance is a bit lower with Crystal DiskMark when comparing it to ATTO, this is typical and falls to reasoning of different data samples being transferred. ATTO uses highly compressible data samples such as software applications whereas CDM uses random or highly incompressible data samples as might be seen in photographs, music or video.
The highlight of this benchmark is the low 4k random write result of 148MB/s which is the highest we have seen to date, although we are certain that the RAID configuration plays a large role in this.
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 look to AS SSD for their needs.
When examining AS SSD results, we continue to see excellent performance and it takes things a bit further by displaying an initial high of 88,852 IOPS.