Samsung SSD 990 Pro PCle 4.0 NVMe M.2 Solid State Drive 1TB 2TB 4TBThe Ultimate SSD Reach max performance of PCIe 4. 0. Experience longer lasting, opponent blasting speed. The in house controller's smart heat control delivers supreme power efficiency while maintaining ferocious speed and performance, to always keep you at the top of your game. PCIe 4. 0 speed maximized Huge speed boost. 40% and 55% faster random read write speeds than 980 PRO up to 1400K 1550K IOPS, while sequential read write speeds up to 7450 6900