What is the difference between PCIe Gen 3 and PCIe Gen 4?

B450M DS3H Key Features Motherboard m 2 ssd slot nvme pcie gen3 Four NVMe SSD slots on a PCIe x16 card Silent operation Add your own ultra-fast SSDs for Mac, Windows, and Linux m2 slot types 800 TB Note Speed may vary due to host hardware, software, usage, and storage capacity Some motherboards only provide PCIe x2 connections for the slot,

m2 slot pc Buy Transcend 1TB SSD NVMe PCIe Gen3 x4 110S, Solid State Drive, 2280, Sequential ReadWrite up to 17001400 MBs