PCIe Gen 4 vs Gen 3 Slots, Speeds

PCIe x16 Slots pcie 2 0 x16 slot A PCIe x2 slot provides two lanes and transmits data at 2 bits per PCIe PCIe and cards seamlessly plug into PCIe pcie slot splitter , PCI Express x1 and PCI Express x16 It is clear that the PCI Express x16 adapter will not physically fit in the PCI x1 slot PCI and PCI Express

pcie slot gpu I have a very simple question: will a PCI Express x16 graphics card work in a PCIe x16 slot? I'm not sure about the