Put NVMe power at the heart of your PC for lightning-fast, ultra-responsive performance. The WD Blue SN550 NVMe SSD can deliver over 4 times the speed of our best SATA SSDs. Whether you're working, creating, casual gaming or processing large amounts of data, take advantage of this powerful internal drive's high speeds to do more, Faster. Available in capacities up to 1TB in an affordable M.2 2280 form factor, there's no time Like now to make the change to NVMe. 1gb = 1 billion bytes and 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.