I don't game so I'm not worried that anything I do graphics wise is going to hit a bottleneck but I have an MSI P45 platinum board which has 2 pci-e slots, individually they are 16x each and reorder to 8x + 8x when used in crossfire mode. When I check cpu-z and gpu-z they both show my 4350 as 8x with 16x max. it doesn't matter which slot I use . Any ideas would be appreciated.