Hier haste deine Spezifikationen der Lanes
1 x PCI Express x16 slot, running at x16 (PCIEX16) <-- das wäre die Optimale Lane
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
1 x PCI Express x16 slot, running at x8...