Check out the buying guide in videos section The Ultimate SU650 solid state drive implements 3D NAND Flash and a high speed controller, offering capacities up to 1.92TB. It delivers read/write performance up to 520/450MB/s and greater reliability than 2D NAND SSDs. The intelligent SLC caching algorithm allows NAND Flash memory to operate in single-level cell mode and boosts performance, helping sustain peak SU650 read/write speeds up to 520/450MB per second for smoother and faster boot, file transfers, and downloads. Warranty: 2-year warranty