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

What is the difference between PCIe Gen 3 and PCIe Gen 4? nvme pcie 4 0 in 3 0 slot PCIe NVMe x4? The specs on the Dell 8930 I just picked up 2 SSD slot has a slot data bus width of x4 , so it sounds nvme m2 ssd slot As the subsequent iteration of Gen3, Gen4's data transfer rate is twice that of PCIe Gen 3, enabling PCIe Gen 4 devices to transfer data at a faster speed

nvme m2 ssd slot Add a inch NVMe SSD into a PCIe x4x8x16 slot in a desktop or server using the included screws, enabling ultra-fast data access

nvme pcie slot PCIe devices are forward and backward compatible, therefore a PCIe SSD will still work on a PCIe motherboard and conversely a PCIe Not asked, but nice to know: A PCI-e v3 card will run fine on an PCI-e v2 slot