Crucial’s M500 SSD reviewed
As you’ve probably deduced already, the M500’s MLC memory chips are built on a 20-nm manufacturing process. There’s a difference between this NAND and what’s lurking inside Intel’s 20-nm 335 Series, though. The memory chips in the Intel and most other contemporary SSDs weigh in at 64Gb (8GB) each, while the M500’s NAND chips have twice that capacity.
via Crucial’s M500 SSD reviewed – The Tech Report