XL ATX is not Extended-ATX. It requires cases that support 8 PCI expansion slots. However, the EVGA XL-ATX requires 9 PCI slots. You need to measure the space between the bottom PCI bracket and the bottom of the case. The standoffs are the same as ATX.
i dont understand both those mobo only have 7 pcie/pci slots.. wow that evga is KICK ASS all pcie slots i LOVE IT to bad its all red i guess my hate for red is shrinking