Corsair AX760 or AX860

[RLJY]

Hi there, new to this community.
Will be building a completely new system within a week or so and can't decide which PSU(AX760 or AX860) to use.
Specs:
CPU :intel core i5-4670k

Mobo : Asus Maximus VI ROG Hero

GPU : Asus DCU2 R9 280x or Sapphire vapor-x, might crossfire in the not too distant future

CPU Cooler : Cooler Master Hyper 212 Evo CPU COOLER

HDD : WD Caviar Black 1TB

RAM : Corsair Dominator 1866 16GB

SSD : Samsung 840 EVO 256GB

Case : Corsair Obsidian 750D

And the 3 140mm fans that comes with the case

 

[jimthenagual]

AX860 if you are planning to crossfire.

 

[AK139]

AX 760 is enough unless you want to crossfire