Just for fun, looks like these are all good answers. The real question lies in where you saw the information, obviously you used a utility that looks at your system and provides a report. Relying on Photonboys report about motherboard properties specific to your board I see Two possibilites. The utility your using is not current enough to see the real connection level. Your using another pci-xpress device which is eating up the available lanes which could downgrade the lanes available and or there is insufficient power getting the your video card which could force it to downgrade it's connection level. If you use CPUZ it will tell you whether your video connection is running in 16 lanes, 8 lanes or 4 lanes by clicking on ?motherboard tab.