hey i'm tryin to buid a system with dual GTX 280 video cards on PCI-E 16x 2.0 of course. I'm having trouble finding a mobo that will pull this off. I find lots of mobos with 2x PCI-e 16x 2.0 but if i read reviews on them people talk about issues with SLi working or fitment issues (the video cards block the ram or some cables or just wont work with the case). Is anyone out there running a setup like what i'm trying to build or something close? which mobo will work for me?