Experience speeds up to 7,250MB/s read** and 6,900MB/s write** , with up to 35% faster performance than previous generation. Designed for serious on-the-go gamers, with a PCIe Gen4 interface and Western Digital’s next generation TLC 3D NAND Built with laptops and handheld gaming devices in mind, with up to 100% more power efficiency over the previous generation. Up to 2,400TBW endurance (4TB* model) for gameplay streaming, speedrun captures, or creating with the latest game engines. Ensure your drive is optimized for prime performance with the downloadable WD_BLACK Dashboard (Windows only)