Interface: PCI-Express 4.0×4, NVMe 1.4
Form Factor: M.2 2280
Total Capacity: 1000GB
NAND: 3D TLC NAND Flash
Sequential Read speed: Up to 5,000 MB/s
Sequential Write speed: Up to 4,600MB/s
Dimension: 80 x 22 x 2.3 mm
Mean time between failure (MTBF): 1.5 million hours

Specification:

• Get into the game fast as you zoom past load times with blazing speeds of up to 5,150MB/s* (1TB and 2TB models). | *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.
• Equipped with a PCIe Gen4 interface**, the WD_BLACK SN770 NVMe SSD helps fuel in-game responsiveness, minimize stutter, and provide smooth streaming for a performance boost you can see and feel. | **PCIe Gen4 storage technology requires a compatible motherboard. WD_BLACK SN770 is backwards-compatible with PCIe Gen3.
• Get tons of space for your latest games, future updates, and downloadable content with capacities up to 2TB***. | ***1GB = 1 billion bytes and 1TB = one trillion bytes. Actual user capacity may be less depending on operating environment.
• Equipped with advanced thermal management technology that helps maintain consistent performance, this reliable drive comes in an M.2 SSD form factor for compatibility with modern motherboards and laptops.