I'm about to purchase two Radeon HD 4770 cards and I would like to know what kind of motherboard I'll to to get in order to make it work. I'm assuming some motherboards are crossfire compatible while others are not. I'm trying to build a gaming rig on a moderate budget if that's any help.
More aboutmotherboard crossfire
That depends on your CPU choice.
790x, 790GX for AMD
P45 for Intel
For more information, you can see my guide, linked in my sig.