Would connecting a PCIe GPU to a PCIe port affect

Would connecting a PCIe GPU to a PCIe port affect pcie 4 gpu in pcie 3 slot 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 40 in pcie 30 slot It clearly states its pcie4 for the gpu at x16 so it will be running at pcie4 all but x4 as the 6500xt is limited to that but working at its max

pcie 40 in pcie 30 slot It should work on your mobo regardless A PCIe graphics card will work in a PCIe motherboard slot at PCIe speeds For PCIe

pciex1_1 slot Only double-width full-height, full-length GPUs are supported in the 3-slot PCIe expansion cage Figure 1 Numbering Yes, PCIe standards are thankfully backwards compatible, meaning that a PCIe device will work in a PCIe slot, but it will only be able to reach PCIe