What GPU has PCIe ? Do any graphics cards support

proper PCIe Gen 5 release is coming with the new AMD PCIe Explaining PCIe Slots

PCIe Standard Slot 《外設組件互連標準》 此規格是PCIe介面標準剛發佈時就已定義，是為元老級別的連接器。外型規格為常見的半高或全高的插卡式型態。此連結器有四種不同

pcie 30 x4 slot with previous PCIe generations This means you can use PCIe cards in older PCIe slots

pcie cem slot If you want to see a boost to your graphics card performance, you'll need to have an a AMD Ryzen 7000 series CPU which is based on the new Zen 4