OCZ released yet another firmware update for its Vertex 4
series, which increases sequential speeds.
The new firmware update version 1.5 beta increases maximum
read speed on the 128 GB, 256 GB, and 512 GB variants of
Vertex 4 to 560 MB/s (up from 550 MB/s), while maximum
write speeds are increased by 6.5% on average.
The 256 GB variant sees the highest write performance
increase, by around 10%.
The firmware update can be applied using OCZ Toolbox.