I need to find a Motherboard that could run 2 Intel 980X's and 16Gb of RAM (will be running Windows 7 64bit). Could anyone suggest a really good board? My budget is £5000
There isn't one, because the 980X's can't communicate with each other. Intel cut the links, in order to force you to buy an Xeon instead. You would be looking at two Xeon X5680's to get the same speed, at $1730 each. And it wouldn't be eight cores, it would be twelve.