It's worth noting that I currently have 670SLI in my machine so would it be worth going to a 980 only?
I assume you were saying you might downgrade from a 980 Ti Hybrid to a 980 Hybrid?
Either way 980 Ti to 980 is a large downgrade, just so you know. That said at 1080p it should be a relatively smaller one. The best thing for you to do is go look at benchmarks for both cards at your resolution.

Got an EVGA one from OC and kinda surprised as I only ordered it yesterday.
