Yeah, if you want to go with dual Xeons, then I think the 1st board that I'd look at is the Asus Z9PE-D8 WS.
Supermicro has a long history with server boards - worth checking to see what they have too. Other than that, I'm not sure who else makes a board to support what you need, Intel probably, EVGA maybe?
Of course, you are going to have to stuff it with some crazy fast memory...