Samsung ssd 850 evo with 500gb flash memoryupgrade virtually every aspect of your computers performance with samsungs new 850 evo designed with state of the art ssd advancements including 3d v nand technology as the next generation beyond the bestselling 840 evo youll get the 850 evos new 3 dimensional chip design that enables superior performance greater reliability and superior energy efficiency so you can work and play faster and longer than ever beforewhat is 3d v nand and how does