We move on with the AS SSD benchmark, which contains five synthetic as well as three practical tests. The synthetic tests determine the sequential and the random read / write performance of an SSD. These tests are carried out without using the operating system's cache. The Seq-test measures how long it takes to read and write an 1GB file. Most importantly, this sequential benchmark uses incompressible data for all of its transfers.

The 4K benchmark tests the read and write performance for random 4K blocks. The 4K-64-THRD-test corresponds to the 4K procedure except that here the read and write operations are distributed on 64 threads:

The Arc's 's performance in sequential reading with incompressible test was 438.29 MB/s. Sequential writing was slower at 420 MB/s (average).

At the 4K random reading tests, the Arc SSD had a decent performace, with an average reading speed of 3.5 MB/s.

The drive was very fast at the 4K random writing tests, giving 89.7 MB/s:

The Arc 100 SSD kept giving an adequate performance with multi-threaded requests for random reading of 4K incompressible files. The figures we got are close to the performance of the Crucial MX100 in the reading part and the M500 in the writing part:

In the following graph you see how the OCZ ARC drive reads and writes files with a varied level of compression. This test creates test patterns on the target drive which are random and vary in the level of compression used in the test data. This ranges from 0% compressible to 100% compressible. As you can see, the OCZ Arc 100 SSD provied a pretty stable and consistent perforamance through out the test.