Let me first say, 4k is awesome. I love it. However, one 980ti leaves me right on the short side of what I consider acceptable frame rates. In most games I can set them to ultra, and then bump a few of the big performance hitting settings down, and I'm around 40-50fps, which I can live with. However, contrary to what seems to be an accepted sacrifice, I do not like playing without AA (FXAA in particular). Sure, it looks great without AA, but with AA 4k truly looks incredible. Currently, my system runs GTA V (for instance) with mostly high/very high settings with a few lower settings at 48fps with FXAA enabled, and it looks great. But, I have a 60hz gsync 4k screen, and occasionally I will hit 60fps and it looks amazing. My initial plan was just to add another 980ti and ride off into the sunset as a gangster. However, I've been a little surprise at the poor sli scaling I've seen in most games with the 980ti. A good example is Witcher 3 with a lousy 18% SLI scaling, and GTA V at something close to 20%, wow that sucks. To all those who have done it, was it worth it in hindsight? My previous experiences with SLI has been more compatibility issues and occasionally visual glitches. How has SLI changed in the last several years?