Samsung Announces New TLC NAND SSD, the SSD 840 Evo  Samsung
Announces New TLC NAND SSD, the SSD 840 Evo  Samsung has just
announced a new consumer-grade SSD at its SSD Summit in Korea.
The new drive is called the SSD 840 Evo and it is Samsung's
second drive to use TLC NAND and will also feature a new
MEX controller.  TLC NAND utilize 3-bit-per-cell MLC NAND, this
means that each cell can store up to eight possible data values
as opposed to the more commonly used 2-bit-per-cell MLC NAND
which can only store up to four. Therefore, for the same
capacity, the TLC die will be smaller, which means more dies per
wafer and lower production costs for NAND memory makers; and
also more affordable drives for consumers.  Samsung's earlier
SSD 840 drive was the first to use TLC NAND and was noted for
its poor write performance. The new SSD 840 Evo will attempt to
rectify this. The MEX controller is based on the MDX controller
in the SSD 840 and SSD 840 Pro, but with higher clock speeds -
up from 300MHz to 400MHz.  Additio