Is it possible to do so? I'm looking very highly in the no section for this. If not, what power supply would be needed so that I could crossfire two 7970's, maybe overclocked, and an overclocked 3570k?
Specs to consider:
Intel i5 3570k 3.4GHz
ASRock Z77 Extreme4
Gigabyte 7970 3GB(soon to be two)