I am helping a friend, with a gaming build. Mostly not a problem, but he has a specific desire to play BF3, in 3D. As I've never run 3D, I'm unsure of any particular requirement, other than, obviously, a compatable 3D monitor. Appreciate graphics are more demanding, but unsure how to estimate drop in framerate, and I also "seem to remember" hearing that SLi was a positive advantage, with 3D, but unsure if I'm "imagining" that memory. Any guidance would be much appreciated.