I'm well aware this is a very loaded question, so I'm going to take some time to detail my experience and use case. My experience with multiple-GPU setups is limited and dated. The last rig I ran with it used two Radeon HD7870s. My memories of that experience were mixed. In games with native support where Crossfire scaling was solid, it was a fairly painless experience. Those, however, were few and far between. I became semi-proficient with tweaking settings in the third-party RadeonPro software to get some multi-gpu scaling on games with poor (or nonexistent) support, but it was a constant technical struggle. With my limited gaming time, I often spent more of a session trying to eliminate some nasty judder than I did actually enjoying my game. I've read that Crossfire is a poor imitation of Nvidia's SLI, and that SLI typically works better and is better supported. Of course, I've also read that's all tripe written by Nvidia shills and that my Crossfire problems were of my own making because AMD is the best etc etc... you guys know the drill. I currently play a mix of recent and semi-recent (3-4 years back) titles. I'm running a Gigabyte GTX 1080 Waterforce WB. It's served me well but I've got the itch to go overboard again. A 1080ti, to me, isn't worth the hassle. Maybe if I didn't already have 1080 I'd feel differently about that, but it is what it is. How many gremlins do you SLI users typically face in your games? How do older games or games without SLI support fare? It wouldn't be a matter of just grabbing another card, for me it will involve a PSU upgrade and of course replumbing a hardline watercooling loop. Do you see this as a reasonable upgrade path as opposed to waiting a year or two for Nvidia's next line?