5. AS SSD benchmark
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.
During AS SSD the drive reached a score of 1108. Sequential speeds hit 501MB/s for reads and 476MB/s write while 4K speeds reach 23MB/s for read and 117MB/s for write. Access times are for read and write are both 0.057ms and 0.046ms, respectively.
The AS SSD Copy Bench presents us with transfer speeds for different file types. It reached a high of 404MB/s for the ISO test. For its lowest value, it reached 281MB/s on the program test.
In the following graph you see how the OCZ Vector 180 480GB SSD reads and writes files, which have been partially of fully compressed. It is obvious that the both reading and writing speeds do not depend on level of file compression: