Quote Originally Posted by Phatboy69 View Post
If I were you I'd bite the bullet and build on the X79 for now and wait for IB-E. It depends a little bit though on when your planning to get this rig operational. I doubt anyone will do a 4 slot 4way SLI/crossfire setup for Z77 anyway, its not the enthusiast platform. It's only setup with enough PCIE lanes to do 3 way so unless your using dual GPU cards you wont get 4way on Z77. You should be able to get to 5.3Ghz comfortably on X79 with what your planning here and from what I can tell you wouldnt be CPU limited even with the 4way 7970's overclocked. (even on X58 with your 990x)
Ya, I am thinking about pulling the trigger on a Rampage IV Extreme, but it's that $1000 CPU that really irks me. Especially when my current 2700K @ 5.2GHz most likely would do better in games than a 3960X overclocked to even the same speed if it's even possible. I'm in no super rush as I think Kepler will be the last thing I need that releases. In the meantime I am getting everything else set up.