Iometer read performance
As we mentioned on the previous page, each drive is secure-erased before benchmarking, to ensure maximum performance. We refer to this as 'clean' numbers.| IOMeter - 64KB sequential read speed | ||||
|---|---|---|---|---|
| OCZ Vertex SSD 120GB | OCZ Vertex SSD 30GB | Intel X25-M SSD 80GB | Samsung Spinpoint F1-DT 750GB | Corsair P256 SSD 256GB |
| 196.5 | 187.13 | 212.36 | 78.5 | 173.97 |
Big-block sequential read speed is very tasty.
| IOMeter - 4KB random read speed | ||||
|---|---|---|---|---|
| OCZ Vertex SSD 120GB | OCZ Vertex SSD 30GB | Intel X25-M SSD 80GB | Samsung Spinpoint F1-DT 750GB | Corsair P256 SSD 256GB |
| 28.19 | 28.01 | 57.97 | 0.48 | 55.48 |
| IOMeter - IOPS (read) | ||||
|---|---|---|---|---|
| OCZ Vertex SSD 120GB | OCZ Vertex SSD 30GB | Intel X25-M SSD 80GB | Samsung Spinpoint F1-DT 750GB | Corsair P256 SSD 256GB |
| 7216.38 | 7171.52 | 14839 | 122.38 | 14204.1 |
The drive's not exceptional when it comes to the random reading of small files, coming in at about half the speed of the other two large-capacity SSDs, according to Iometer. However, run the same test with the drives in a well-used state, and the two leading drives' performance drops to around 30MB/s 4K random read and 7,500IOPS. The OCZ's stays roughly the same.
| IOMeter - average read latency | ||||
|---|---|---|---|---|
| OCZ Vertex SSD 120GB | OCZ Vertex SSD 30GB | Intel X25-M SSD 80GB | Samsung Spinpoint F1-DT 750GB | Corsair P256 SSD 256GB |
| 0.42 | 0.42 | 0.2 | 24.51 | 0.21 |
| IOMeter - maximum read latency | ||||
|---|---|---|---|---|
| OCZ Vertex SSD 120GB | OCZ Vertex SSD 30GB | Intel X25-M SSD 80GB | Samsung Spinpoint F1-DT 750GB | Corsair P256 SSD 256GB |
| 1.42 | 1.41 | 0.77 | 46.46 | 1.07 |
Yet all wipe the floor with the mechanical drive with respect to latency.
Performance in the read tests is eerily similar to the 30GB model. Unlike mechanical hard drives, there's no areal benefit as the drive becomes larger; it's mainly down to the controller.
