Well I did mention a re4
and that is only viable for 1155 so no sandy bridge

. And I tried to say not being rude. And yes I have done my research as you can tell I have an understanding of full 16 bandwidth lanes and their use for multi monitor setups. I was just trying to confirm my theory.
And its more of a as long as there's two pci-e lanes.. You seen people run dual 295s back in the day on classified 3way sli boards before 4 way sli had even come out.. and you see people running two gtx 590s on sabertooths... etc... The board does not have to support physical 4way sli. IE: enough lanes to fit 4x2slot cards (4 580s). It just has to least have x8 bandwidth to two pci express 2.0 slots.. Or x16x2 or x16 x8... otherwise there would be no point in a dual gpu single slot solution. So as long as it can support sli with two cards running least x8 your fine. I don't think I know of a board that has two pci express slots on 1155 that can't run sli 590s... I am just trying to stick with a red theme here. Because with this money lol that's all you have to choose from really xD, and I want it to perform better, but my choice of the re4 comes the problem. It only supports x16 to one slot then th rest x8... which x16 to both cards is a must... esp with 590s...
And with all that aside I said I'm doing a high end enthusiast build. Never stated I was... I'm here to learn whatever it is I need to. Been into pc building awhile now. And I still have yet to learn everything. Any tips are appreciated and I do appreciate your input.