Quote Originally Posted by OC Nub View Post
just use the x1 slot for the sound card, you will still have 16x for both gfx cards.
There is no x1 slot on the R3E. There is a x4 slot but I have no idea if it will cause the other cards to drop to x8 or not. You also need a single slot videocard cooler in PCIe x16 slot 2 in order to use it.