OCIA checked out the OCZ Vertex 3.20 240GB Solid State Drive A quote from the article:

OCIA.net has posted their review of the OCZ Vertex 3.20 240GB Solid State Drive. Below is a direct quote from the review.

[thumbleft=221] “The key difference this time around, however, is the selection of MLC NAND. As the name indicates, the Vertex 3.20 uses 20nm MLC NAND compared to the larger 25nm / 34nm variants found on the original Vertex 3. It's part of a market-wide push for smaller flash across the board. That aside, everything else under the hood remains virtually the same although LSI now owns SandForce.”
 OCZ Vertex 3.20 240GB Solid State Drive Review @ OCIA.net