Your Ultimate Guide to Understanding PCIe Gen

Both PCIe and PCIe are backward and forward compatible Remember those high-speed components that use PCIe slots

PCIe adapter installation rules and order​ · SFF HBARAID adapter · ThinkSystem x16 Gen Re-timer adapter · ThinkSystem x16 Gen Re-timer

pcie slot x16 If you connect a PCIe GPU to a PCIe slot, you will only get the PCIe standard performance If you connect a PCIe GPU to a PCIe

pcie slot width As Zef said, PCI-e is backwards compatible You can put a PCI-e GPU into a slot or a PCI-e GPU into a slot, it'll just run