There was a time not too long ago when you would have to go with a mechanical hard drive to get higher capacities and that came at the cost of read and write speeds. With SSDs becoming the new norm, especially for gaming PCs, the demand for high speed and high capacity has never been higher. Thats where the WD_BLACK SN850X 4TB internal NVMe SSD comes in, as it offers massive storage capacity with NVMe PCIe 4.0 read and write speeds that far exceed SATA-based drivers.