EX58-UD4P?

Has anyone here run 2x 9800x2 or other cards their size in this mobo? I want to run 2x 9800 but those 2 blue slots look really close together for air cooling.

I would try it. I guess you are folding? I would direct more air flow with a 120mm fan on the end of them or facing at them as well, and set the fan speed higher. A lot of mothebroard have pci-e x16 slots right next to each other so I guess it should be ok.