Crucial P3 4TB NVMe M.2. The Crucial P3 PCIe 3.0 NVMe M.2 SSD is a budget-friendly, high-capacity storage solution using Micron 3D NAND and PCIe Gen3 x4 technology. It offers sequential read/write speeds up to 3,500/3,000 MB/s, making it suitable for faster bootups, application loading, and gaming, with capacities ranging from 500GB up to 4TB.