The future of gaming has arrived with the WD_BLACK SN850 NVMe SSD. Long load times are obsolete with PCIe Gen4 technology, reaching up to 7000MB/s read speed and up to 5300MB/s write speed (1TB model). Spend more time playing and less time deleting, storing your latest and favorite games with up to 2TB capacity (not intended for NAS or server environments). As used for storage capacity, 1GB = 1 billion bytes and 1TB = one trillion bytes. Actual user capacity may be less depending on operating environment. As used for transfer rate, 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.