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

There are two possible meanings for PCIe1: PCIe and PCIe x1 PCIe refers to any PCIe slot which uses the first version of the PCIe

PCIe Gen 4 is the fourth and latest generation of the PCI Express specification x1, x2, x4, x8, x16 PCIe Gen 3 bandwidth, 1 GBs, 2 GBs, 4 GBs, 8 GBs, 16

pcie 40 in pcie 30 slot For more details about the PCIe card sizes, you can refer to the following table PCIe Slot Width, Numbers of Pins, Length PCIe x1, 18, 25 mm

pcie 4 in pcie 3 slot types of pcie slots, what are pcie slots, pcie slots explained, what are pcie lanes, pcie x16 slot