V-NAND Technology Samsung's V-NAND flash memory helps to overcome the limitations of conventional planar NAND architecture. It stacks 48 cell layers vertically over one another rather than trying to fit itself onto a fixed horizontal space, in order to provide high density and performance with a small footprint. TurboWrite Technology Samsung’s TurboWrite technology helps to maximize your computing ability. The 850 EVO delivers exceptionally high performance in sequential read (540MB/s) and write (520MB/s) speeds, as well as optimized random performance for high-end computing on client PCs. Rapid Mode Samsung’s Magician software provides a Rapid Mode for fast processing speeds on a system level by utilizing unused PC memory (DRAM) as cache storage, as well as high performance at various random queue depths. 5-Year Limited Warranty The 850 EVO offers endurance and reliability with a high TBW (Total Bytes Written), all backed by a 5-year limited warranty up to 150TBW. It also minimizes performance degradation over time, in order to provide sustained performance for business users.