Get ready to game even faster with the WD_BLACK SN770 NVMe SSD. Zoom past load times and get into the action now with a purpose-built gaming drive that boasts up to 40% faster performance and up to 20% more power efficiency at maximum speed over the previous generation(3) (1TB model), plus a PCIe Gen4 interface(4) that delivers blazing speeds of up to 5,150MB/s(1) (1TB and 2TB models). (1)Based on read speed. 1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors. (3)Up to 40% faster and up to 20% better power efficiency at maximum speed as compared to our last gen product, the 1TB WD_BLACK SN750 SE SSD. (4)PCIe Gen4 storage technology requires a compatible motherboard. WD_BLACK SN770 is backwards-compatible with PCIe Gen3.