About This Product The Samsung 850 PRO SSD redefines storage with the world’s first drive based on 3D VNAND flash, offering exceptional read/write performance, reliability and power management efficiency. The 850 Pro delivers up to 2x the speed, density and endurance of conventional flash. The next leading SSD for performance, endurance and energy efficiency V-NAND Samsung's flash memory is fabricated using an innovative 3D V-NAND architecture, which stacks 32 cell layers on top of one another. The result is higher density and higher performance using a smaller footprint and a breakthrough in overcoming the density limits of conventional planar NAND.