What's new in OCZ vertex 4 firmware?But then the company released a new Vertex 4 firmware: a beta version of version 1.5. A week later, it uploaded a final build of 1.5. It's currently available as a stable release on OCZ's support site. Now, we have a couple of new variables to put through our gauntlet. Improved sequential file transfer performance for 128, 256, and 512 GB models
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