You left out two important pieces of information that will aid us in helping you pick the right card.
Budget?
Intended use? You mentioned "gaming" but what games? Solitaire is a game.
If cost is no object, the Nvidia 1080 is a very good buy but at over $600, it may be more than you want to spend. AMD has their 480 which hits a good price point at just over $200 but maybe that's not what you're looking for.