4-Slot PCIe Expansion x8 Gen2 EB4-U

I have an old motherboard which has a x1 PCIe and one x16 PCIe slot I need to split the x16 slot into two half-height x8 slots,

even though the slot may be wired as x8 electrically There is also the caveat that if you have a weaker CPU you may be gimped

pcie 4 in pcie 3 slot 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 50 x16 slot What should be: The PCIe spec states that all slots start at 1x and negotiate how many lanes they can use and what clock speed