use both PCIE x16 gen4 and gen3

use both PCIE x16 gen4 and gen3 can i put a pcie 3 0 in a 4 0 slot As mentioned before, PCIe devices are usually both backward and forward-compatible Therefore, any PCIe device will work with PCIe slot, can you tell when a slot machine will hit_ A PCIe graphics card can be used in a PCIe slot, but it will operate at PCIe speeds · A PCIe graphics card is backward compatible with PCIe

can you tell when a slot machine will hit_ no you can perfectly put a gpu with PCI-E into a newer mobo that supports higher bandwith with ofcourse you won't be using the max

candy bonanza slot demo The answer is yes it will work But the PCIe GPU will work at PCIe speeds So to have maximum benefit of the PCIe GPU you would You may insert a card into a slot of a For example, inserting a PCIe card on a PCIe slot will give you PCIe performance