So I have been using an amazing gaming pc with the following specs during this summer... 2 gtx770's, 4770k @ 4.5 Ghz, gigabyte z97 mobo, 16gb Corsair Vengeance 1866Mhz, 800 watt psu, and a single Samsung 1080p monitor. Now for me sli has been pretty awesome, just destroying most of the games in my library. I have been mostly blessed. But they have only 2gb of vram and the dawn of the vram hungry games is upon us gamers as well as the release of the 800 series cards. So my question is, within the next few months, especially when Christmas comes around, what one video card would be a decent upgrade from this sli setup that would also give roughly the same performance, obviously better drivers with just one card. Any suggestions would be appreciated. And yes if you do it right sli can give a huge performance increase in many games from the past few years. Thanks and cheers.