So right now I currently have a GTX 970, and I only play at a resolution of 1080p. I was curious to know if a viable upgrade to maintain 60fps/ultra/1080p for the latest generation of cards. Currently my 970 is paired with a core i5 4690k at stock speeds. Would a 1060 for example be much of an upgrade from my GTX 970? Or would an SLI build see better results at 1080p/