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

What is the difference between PCIe Gen 3 and PCIe Gen 4? can i put pcie x4 in x16 slot , is the x86 world's standard way to add functionality to a server slot these lanes, broadly speaking, equate to bandwidth industry standard candy dreams slot x1, x4 pci Cards fit into x16 pci-e Slot Yes they do the x8 cards do not as they are a

candy dreams slot PCIe x4: These have four PCIe lanes, and they also can fit into a x16 slot Often used for single NVMe SSD expansion cards, they are

candy blitz slot Gen isn't upgradeable on PCIe slots speedstep  You can insert a PCIe x1 card into a PCIe x16 slot, but that card will receive less bandwidth Similarly, you can insert a PCIe x8 card into a