The HD Tune Pro random read 512 byte test provided us with some very surprising results. The OCZ Onyx 32/64GB SSDs were found to be the best performers here beating the Intel X25-V 40GB and OCZ Agility 2 40GB SSDs by a narrow margin. The Kingston SNV425-S2 64GB was noticeably slower than most of the other SSDs, though it was the ADATA S596 Turbo 32GB that delivered the worst results.
For some reason the ADATA S596 Turbo 32GB was limited to 0.05MB/s making it slower than a conventional desktop 3.5 hard drive. The Momentus XT 500GB was also very slow but this is less surprising given that it is a mechanical drive.
The write performance of the OCZ Onyx 32/64GB SSDs was not quite as impressive as they provided less than half the performance of the OCZ Agility 2 and Vertex 2 40GB drives which produced the best results. The Intel X25-V 40GB was the third fastest drive tested and roughly matched the performance of the OCZ Agility 2 and Vertex 2 40GB drives.
This time it was the Kingston SNV425-S2 64GB that provided the worst SSD result.
The HD Tune Pro 1MB random read test favored the OCZ Agility 2 and Vertex 2 40GB drives which produced massive bandwidths in excess of 250MB/s. The ADATA S596 Turbo 32GB also did quite well reaching 210MB/s while the Kingston SNV425-S2 64GB sustained 190MB/s. The Intel X25-V 40GB was limited to 149MB/s while the OCZ Onyx 32/64GB drives fell just short of 120MB/s.
The Seagate Momentus XT 500GB again struggled in this test with just 34MB/s making it quite a bit slower than the Samsung Spinpoint F1 1TB.
The OCZ Agility 2 and Vertex 2 40GB also dominated the HD Tune Pro random write 1MB test with a throughput of 232MB/s making them 54% faster than the next quickest SSD which was the Kingston SNV425-S2 64GB. While the Kingston SNV425-S2 64GB appears to suffer when making small random writes it is comfortable with larger writes. The ADATA S596 Turbo 32GB on the other hand suffers when making larger random writes as we saw a throughput of just 6.9MB/s.
The Seagate Momentus XT 500GB managed 36MB/s which made it 27% slower than the Samsung Spinpoint F1 1TB. The Intel X25-V 40GB was also slower than the Samsung HDD.
Finally we have the random file size HD Tune Pro read test and again we find the OCZ Agility 2 and Vertex 2 40GB right up at the top of the pack. The ADATA S596 Turbo 32GB and Kingston SNV425-S2 64GB also fair well. However it is the Intel X25-V 40GB that shocked us with a throughput of just 4MB/s making it not only the slowest SSD tested but also the slowest drive which was disappointing.
On the random write test we find both the Intel and ADATA drives struggling pretty badly. Both SSDs produced a bandwidth of just over 2MB/s while the OCZ Agility 2 and Vertex 2 40GB drives which were found at the top of the graph providing a throughput of almost 220MB/s.
The OCZ Onyx 32/64GB SSDs were found to be much faster than the Seagate Momentus XT 500GB and Samsung Spinpoint F1 1TB drives. In fact, the Onyx drives provided roughly twice the bandwidth of the Momentus XT 500GB.