OCZ Vertex 4 256 GB Solid State Drive Review

Incompressible Data Test

For this test, we set CrystalDiskMark to the default mode, which uses incompressible data.

In the sequential read test using incompressible data, the Kingston HyperX 3K outperformed the OCZ Vertex 4 by a margin of 22 percent. However, in the sequential write test using incompressible data, the OCZ Vertex 4 came out on top, achieving 40% higher performance than the Kingston HyperX 3K.

The Kingston HyperX 3K achieved 45% better performance than the OCZ Vertex 4 in the random read test using 512 KB blocks. Moving on to the random write test using 512 KB blocks, the OCZ Vertex 4 achieved the highest level of performance, beating the Kingston HyperX 3K by 39 percent.

In the random read test using 4 KB blocks, the OCZ Vertex 4 outperformed the Kingston HyperX 3K by a margin of 6 percent. It also achieved the best level of performance in the random write test using 4 KB blocks, achieving 10% higher performance than the Kingston HyperX 3K.