If you thought the most exciting improvements with OCZ’s new Vertex 4 firmware were reserved for the 256GB and 512GB models, you’d be wrong. As it happens, the most interesting and substantial performance improvements are to be had with the 128GB Vertex 4. We happen to have a 128GB Vertex 4 on our bench in order to find out what makes it and the new Vertex 4 1.4 Release Candidate firmware worth a look.