The internal SSD and incredible read and write speeds of up to 7,300 MB/s and 6,600 MB/s get you into the game faster. The output of WD_BLACK SN850X NVMe SSD goes to the limit of PCIe Gen4 to get ultra-fast performance out of storage and system components. The latest Game Mode version offers advanced features for maximum PC performance, such as load prediction, which allows resources to be prepared and loaded faster in-game. The extremely low latency speeds up graphics loads and minimizes stutters and lag for action-packed gameplay. Box contents: WD_BLACK SN850X NVMe SSD 4TB internal SSD; gaming storage; PCIe Gen4 technology; read 7,300 MB/s; write 6,600 MB/s.