FanXiang S770 PCIe 4.0 NVMe M.2 Internal SSDUltimate Speed: The S770 M. 2 SSD utilizes cutting edge PCIe 4. 0 technology, with read and write speeds reaching up to 7300 6800MB s, providing a smoother user experience. Reliable and Durable: After undergoing 80 hours of strict testing and 5 rigorous inspections, along with a 5 year warranty. DRAM Cache: The S770 NVMe SSD is equipped with DRAM cache, accelerating read and write speeds, improving system stability, and reducing CPU burden, ensuring