I'm upgrading from an ATI 7850, I won't be using anything higher than 1920 x 1080 anytime soon. I've been trying to decide between these 2 cards for 2 weeks now but I'm in a state of deadlock, possibly through paralysis of analysis.
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Another vote for the rx480, XFX GTR is the most prefers on here
Jayztwocents did a video on it, well worth checking out
The XFX GTR is the best one deal on that.