Don't bother unless you're into one game that you play 90% of the time like say Battlefield that supports it. Sure you can get better performance than 1080 for less but you can't rely on games supporting crossfire. I say this as someone that had crossfire 290x.

Maybe things will change with DX12 but I wouldn't count on it yet. By the time it does Vega will be out anyway and there will be 480 price drops. So either buy a 480 now and live with the performance and then buy another 480 later or just go for the 1080.

Crossfire works only in select titles, AMD hardware only beats Nvidia when DX12 is involved
Microsoft is looking to make DirectX12 utilize multiple GPUs better

Youre basically taking a bet that all of the games you want to play use DX12

I bought a single 480 with a plan to upgrade to a flagship when this generation is fully fluffed out - so Fury successor/1080ti - and we have a good idea of what parts of the new tech will affect anything in the big picture and what won't, so it's not blind guessing over whether DX12 multigpu will mean anything and so on and on

>>55514025
Have to add that I also ordered an HTC Vive along with it so the features are more important to me than raw performance - as both AMD and nVidia have their own sets of VR specific features that might/will make a huge difference but we just don't know what will stick yet