SAMSUNG 990 PRO M.2 2280 PCIe GEN4X4 NVMe SSD (R:7,450 MB/s W:6,900 MB/s) - 1TBThe 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 Maximised Huge speed boost. 990 PRO offers sequential* read write speeds up to 7,450 6,900 MB s reaching near the max performance of PCIe 4. 0. 40% and 55%