Guild Wars 2

How does guild wars 2 perform with dual AMD gpu’s? I am thinking about AMD’s new RX 480 coming out on the 29th. I have looked this topic up on google but it seems like most of the threads were old. I understand that this game is very CPU bound, but maybe things have changed. So does Guild Wars 2 utilize SLI or Crossfire?

Gw2 has always used Crossfire/SLI. But the thing is a mid level gpu (R9 270x, GTX 950, GTX 660ti) is enough to max the game at 1080p, and at this level of gpu compute, only more cpu performance will increase the framerate.
Crossfire/SLI will only be needed if you go with very high resolutions or multiple monitor setups.