Yesterday OCZ introduced an updated version of their Vertex 3: The Vertex 3.20. The name derives from the fact that the new Vertex 3.20 uses 20nm IMFT MLC NAND, whereas the original Vertex 3 used 25nm IMFT NAND. OCZ did the same with Vertex 2 and it's a common practice to move to smaller lithography NAND when it becomes cost-effective. At first the new lithography NAND may be more expensive and limited in availability but once the process matures, prices start to fall and eventually will overtake the old process node. Fortunately OCZ has learned from their mistakes and now the Vertex 3 with new NAND is easily distinguishable from the original Vertex 3, unlike with the Vertex 2 when OCZ silently switched to...