AMD's mainstream desktop platform effectively has four more PCIe lanes coming out of the CPU socket than Intel's mainstream desktop platform. Both then have a v

AMD's mainstream desktop platform effectively has four more PCIe lanes coming out of the CPU socket than Intel's mainstream desktop platform. Both then have a variable number of PCIe lanes fanned out from the chipset and sharing that chipset's uplink to the CPU. (Intel has a range of chipsets with different number of lanes enabled, and AMD's more expensive chipset solution is to daisy-chain a second chipset).