I have dual 980 ti's in SLI. But lately games I have been playing have not been using SLI support, which makes gaming in 4K not possible for me without the second card. All I keep reading about on forums when looking into this for individual games is that SLI is being supported less and less and is dying or already dead. I want to achieve passable framerates in 4K while gaming, it doesn't have to be 60fps but better than 30 or lower. When both 980 ti's are used and I play in 4K, usually with graphics set on their highest, I generally get around 38-45 fps, sometimes a little better, and thats fine by me. Would I see better or comparable fps with a single 1080 ti while playing in 4K and having graphics options mostly maxed out? I know it has much more vram which is important.