PCI Express x16 vs x4 , Any difference in gpu performance

can you put a pcie x4 in a x16 slot   Dan candy bar slot

My mobo manual says that the x16 slot is for a GPU, but more googling has revealed that others have plugged a x1 raid controller in the slot

I did contact the card manufacturer, and they said that putting a x4 card in x16 slot is called up-pluging, and they know for sure that these If you have a board that does not do CrossfireSLI, then sticking a card into another slot will have no bearing on the first You could also get an enthusiast

frog story slot A GTX 780R9 290 for example may suffer a performance hit but an R7 260GTX 750 may not The PCIe slots are rated as they are because of ❌You must have a PCIe Gen 5 x16 slot: Though it means nothing now, future graphics cards will support PCIe Gen 5 Who knows if a distant RTX