I would go with the 980ti. I always recommend getting a single card over SLI / Crossfire. If you get the two rx480 cards you will most likely experience a lot of problems with software that doesn't support SLI / Crossfire.
I would go with the 980ti. I always recommend getting a single card over SLI / Crossfire. If you get the two rx480 cards you will most likely experience a lot of problems with software that doesn't support SLI / Crossfire.