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 always a positive sign to see high sequential write results of over 300MB/s when testing with ‘random’ or highly incompressible data. The low 4k random transfer speed of 91MB/s is also encouraging.
As much as we like other utilities, AS SSD was the first benchmark released specific to SSD performance and is still the ‘bread and butter’ of testing SSDs. Many enthusiasts prefer this software as it encompasses the ‘worst case scenario’ in disk transfer speeds by utilizing incompressible data.
As well, the AS SSD Copy Bench is a great result as we might normally see at least one of the three tests reaching into the six second range. For those unfamiliar with this benchmark, AS SSD simply creates three typical applications (an .iso, program and game) and moves them from one spot on the SSD to another, benchmarking their high transfer speeds and the time it takes to move the file. Lets take a look at the AS SSD Compression Test
Over the last little while, we have been assisting with beta testing new benchmark software called Anvil Storage Utilities which is an absolutely amazing SSD benchmarking utility. Not only does it have a preset SSD benchmark, but also, it has included such things as endurance testing and threaded I/O read, write and mixed tests, all of which are very simple to understand and utilize in our benchmark testing.
Anvil Storage Utilities is easily the best ‘all encompassing’ SSD benchmark that can be found and shows us some great IOPS scores with the high of 81,000 IOPS as well as some amazing access speeds, the most notable being 0.05ms at 4k QD4 aligned random performance. Another good thing about the program is its identification of the system in use on the bottom left and SSD in use on the bottom right.