I am running an EVGA 780 Ti and I know of many others who run the editor with a much weaker video card just fine. A 780 FTW will work pretty well, at least for the graphic rendering side of things. It is hard to say if a video card alone is good enough as there are things to consider such as CPU specs and RAM, but if you’re considered about the video card only, a 780 FTW should perform better than a 770.