Samsung ssd 850 evo with 250 gb flash memoryythe 850 evo is the advanced consumer ssd powered by 3d v nand technology that maximizes everyday computing experiences with optimized performance and enhanced reliabilitywhat is 3d v nand and how does it differ from existing technologysamsungs unique and innovative 3d v nand flash memory architecture is a breakthrough in overcoming the density limitations performance and endurance of todays conventional planar nand architecture 3d v nand is fabr