[M] OCZ Vertex 450 256GB SATA III 2.5'' SSD Review
 

The Vertex 450 SSD was built with an optimal price/performance ratio in mind and features a derivative of the Indilinx Barefoot 3 controller (M10), with a lower clock speed and an optimized clock generator; the 450 also features 20nm process NAND flash which is purchased and packaged by OCZ itself in order to bring the prices further down.

http://www.madshrimps.be/articles/article/1000499/