Samsung 990 PRO 1 TB M.2 PCI Express 4.0 NVMe V-NAND MLCSuperb SSD for gaming enthusiasts 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, so you can stay at the top of your game. PCIe 4. 0 speed maximised 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