Toshiba starts fabbing 15-nm MLC NAND
 

The progression to finer flash fabrication processes is largely responsible for the steep decline in SSD prices observed over the past few years. The cheapest drives now sell for less than 50 cents per gigabyte, and prices are likely to fall even further. Toshiba has started mass-producing MLC NAND built on a 15-nm process. The 128Gb (16GB) chips have achieved the "world's smallest class chip size," the company says.

http://techreport.com/news/26382/tos...15-nm-mlc-nand