Samsung revealed details about the upcoming solid-state drives on flash memory chips 3D QLC NAND. The main advantage of solid-state QLC memory, storing four bits in a cell, in front of a TLC storing only three bits per cell, is a 33% higher storage density. This opens the way to another decrease in the unit cost of drives per unit capacity. However, do not expect that the new solid-state drives with QLC-memory will be cheap enough to fully replace the traditional hard drives. However, the use of a four-bit flash memory will certainly have a positive effect on the distribution of a larger SSD. As expected, by 2022 QLC-memory will be used in more than 20% of the supplied drives.
New SSD Samsung is built on the same platform as the current Samsung 860 EVO. The novelties are made in a form factor of 2.5 inches and work through the SATA interface. But instead of 64-layer TLC V-NAND chips with a capacity of 256 and 512 Gbit, they use 64-layer QLC V-NAND chips with a capacity of 1 Tbit. Given the possibility of using up to 32 chips in a 2.5-inch SSD, the new QLC-drives will get a capacity of up to 4 Tb.