Hi I am looking for a pc case with 12 to 13 Pcie expansion slots. I am building a pc with 4 HD 7970's (Asus Direct CU II 3GB) They are 3 slot cards. Yes I could do 4 HD 7970's that are of the 2 Slot Variant or 2 HD 7990s. But these are the only ones I have on hand and HD 7990's are rare to come by. Test benches could work but those only come with 8 slots so it would look kind of funky. Hope you guys can help me on this one, Ive been scouring google for a little and couldn't find any besides 11 slot ones which would not work since 4 Of my cards require 12 slots.