OCZ has typically reserved its Vertex label for the highest-performing SSDs in a given generation—using synchronous NAND, for example, rather than the asynchronous NAND found in its less expensive Agility series. The 256GB Vertex 4 carries on that tradition, with 16 128Gb IMFT 25nm synchronous NAND packages on a board with 512MB of DDR3 DRAM cache and OCZ’s new Indilinx Everest 2 controller.
The Everest 2 controller in the Vertex 4 is a modified Marvell controller with custom Indilinx firmware.
So a SandForce and an Indilinx controller walk into a testbed…
Are SSDs approaching commodity status? There are dozens of different consumer SSDs on the market, but with each successive generation it seems there are fewer controllers driving them. This time around the big players are LSI’s SandForce SF-2281 controller (found in OCZ’s Vertex 3 and Agility 3 drives, Patriot’s Pyro SE, Corsair’s Force 3 and Force GT, OWC’s Mercury Extreme Pro, Intel’s 520 Series, and so many more) and Marvell’s 9174, found in pretty much everything else. Samsung’s 830 Series drives have their own controller, but most of the rest of the market has one of two controllers, differentiated only by firmware and NAND choice. Here we examine two new SSDs: one with an off-the-shelf controller and one with a heavily modified one.