Asus Sabertooth P67 Motherboard Review

The Ninjalane Multi-GPU index is a portable set of data we can use to determine the multi-gpu potential of any motherboard.  A higher index number indicates a favorable condition for multiple graphics cards while a lower number indicates a hindrance in one of our leading indicators.  Since the Index is not dependent on system architecture it can be applied to any motherboard regardless of processor or chipset generations.

Index: 2.75
Optimized: 2x
Max Support: 2x

NVidia SLI
AMD Crossfire

This motherboard will support up to 2 graphics cards and is optimized for dual card operation.  Given the minimal multi card support there is no need for any additional PCI Express power.

For best video performance you will want to populate the top most PCI Express slot with your video card and try to avoid using the secondary slot.  The secondary slot is in fact hardwired to 8x PCI Express lanes and only active when the slot is populated.  Given the distance between the slots if you choose to enable Crossfire be sure your bridge connector is long enough to reach.

There will be no cheating the motherboard to install more graphics cards due to how the Thermal Armor molds around the expansion slots.  Your Dremel tool can quickly resolve this situation, but that would also kill your warranty in the process.