What are the standard PCIe sizes?

What are the standard PCIe sizes? pcie x32 slot Would i be right in thinking that a x32 can only slot one video card? I ask because i am unfamiliar with the PCI-E X32 slots pcie 1 slot PCIe 1x slot to provide a low profile PCI slot in its place Supports PCI 32 bit 33MHz bus The adapter card converts PCIe to PCI or PCI-X; a built-on LP4

pcie 1 slot That will work for old cards, but it can't go back to PCIe The riser slot on the motherboard x32? so I tried to Google around From

pcie slot x16 A PCIe or PCI express slot is the point of connection between your PC's “peripheral components” and the motherboard The term “PCIe card” and “ PCIe Fun Fact: the x32 and x12 interface widths from earlier generations are dropped While these widths are available in PCIe and