Guide to Types of Expansion Slots and Add-In Cards

Your PCIe card will run at the lowest generation present So if you put a PCIe card in a PCIe slot, you'll get PCIe performance

After a quick Google search, I found this article which explains that: a PCIe x16 slot can theoretically hit approximately 32 gigabytes

pcie gpu slot PCIe Gen 4 is the latest and fastest PCIe standard available on motherboards and compatible CPUs PCIe Gen 4 cards can accommodate the full bandwidth that is

pcie x32 slot For example, a PCI Express graphics card works even if you connect it to a motherboard that only supports PCI Express or even