Super Powerful Computer Question

MSI Big Bang-Marshal (B3) LGA 1155 Intel P67 (B3) & Lucid LT22102 SATA 6Gb/s USB 3.0 XL ATX Intel Motherboard with UEFI BIOS
$379.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SeaSonic X-1250 1250W ATX12V / EPS12V SLI Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply
$269.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SILVERSTONE ST1500 1500W ATX 12V 2.3 & EPS 12V SLI Ready 80 PLUS SILVER Certified Active PFC Power Supply
$339.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The motherboard listed will fit four of the 7970 cards and the minimum psu would be the Seasonic psu but you most likely should get the Silverstone psu.
I think that the cooling will be a challenge and would recomend this case;

COOLER MASTER HAF X RC-942-KKN1 Black Steel/ Plastic ATX Full Tower Computer Case
$199.99 and a $20 rebate makes it $179.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

At this point I don't know if there are cooling solutions for the 7970 yet , there will be but it may be some time yet for there to be one released.

Ok cool, I'm going to be making a more in depth post in a bit. I would be using the 3960x as well, so I would need a different motherboard.

I think 4x7970 is overkill. YOu realize that is like 5xGTX580s right! GEt 3.

Yes....  

ASUS Rampage IV Extreme LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 Extended ATX Intel Motherboard
$449.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

ASUS P9X79 WS LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 SSI CEB Intel Motherboard with USB BIOS
$379.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Here are a couple of x79 boards to look at that would fit four cards.

I do like how you think and I do the same thing with getting what I want to put into my computer no matter what anybody else says. I currently have three GTX 580's in a three way SLI and I could get a fourth if I wanted to. The reason that I don't is because I notice that after two cards there really wasn't that much of a noticeable difference in the visual aspect of viewing everthing. There was an increase in the fps which I'm sure there would be if I got a fourth but I'm thinking that I wouldn't notice anything being better and believe me if there would be a noticeable better visual of the games then I would do it. So in your case I would get three and then maybe something outrageous with monitors. Maybe two or three 30" ones or a six screen setup or one of those new cinema screens that are one continuous screen but with the size of three with no bezel.

http://www.youtube.com/watch?v=ZWivZEtH6-c&feature=rela...
http://www.youtube.com/watch?v=UixSNqED4pc&feature=rela...
http://www.youtube.com/watch?feature=endscreen&NR=1&v=-...

This would be the ultimate!!!

http://www.youtube.com/watch?v=dOY2lREuwjU&feature=rela...

I would be, I agree, I'll see what I can come up with.