Stefan Mileschin

There's another terabyte SSD in town. SanDisk's new X300s runs the gamut from 64GB all the way up to 1TB. It's based on the second generation of 19-nm MLC NAND developed by SanDisk's joint flash fabrication venture with Toshiba. This "1Y" NAND shortens the cell size from 19 x 26 nm to 19 x 19.5 nm, delivering a 25% reduction in area—not bad for an incremental shrink.

Although the X300s addresses the bulk of its flash with two bits per cell, a small slice is treated as single-bit SLC NAND. This portion of the flash is devoted to nCache, ...

http://techreport.com/news/26453/nex...disk-x300s-ssd