The Ultimate SU650 solid state drive implements 3D NAND Flash and a high speed controller, offering capacities up to 2TB. (This model has the capacity of 512GB.) It delivers read/write performance up to 520/450MB/s and greater reliability than 2D NAND SSDs. The SU650 features SLC caching and advanced error correction technologies to ensure optimized data performance and integrity. For those who want to experience a clear PC upgrade, the SU650 is an excellent choice with a great cost-performance ratio.