GEN1GEN2 GEN3

Gen2 on this mb somehow lane distributionbandwidth layout of mb caused GPU in slot

Advanced PCH Configuration PCI Express Configuration PCIe Speed: Auto Gen1 Gen2and no Gen3 entry

pcie2 slot PCIe technology achieves twice the effective data throughput rate of the PCIe standard through a combination of increased data bit rate (5 GTs moving

pcie 1 slot Gen 1 is older PCIe Gen 2 is PCIe and Gen 3 is the new I have my 570 cards in Slots 2 & 4 so I can utilize PLX switching the most