1 Reply Latest reply on Aug 2, 2018 9:30 PM by nunyaz

    World of Warcraft: Battle for Azeroth crossfire


      I just installed another 270x into my wife's pc and everything seems to be working fine, except I can't tell if it's actually running in crossfire mode for WoW. I understand that this game isn't the most crossfire friendly, but I'm trying to at least understand if it's doing anything. Crossfire is showing up in the settings and enabled.

      I've got the custom game profile pointed to the .exe(she launches it via the Bnet launcher), it's set to 1v1 and I thought there would be a crossfire logo somewhere on the screen(it's turned on).


      System Specs: Intel 3350p, AsRock H77m motherboard, 16gb's pc 1600 DDR3, 750w Psu and WoW is installed to an SSD with dual XfX 270x cards(same model, same bios).

        • Re: World of Warcraft: Battle for Azeroth crossfire

          I'm in the same boat, here's the problem:

          1.) AMD's WoW crossfire profile only works for DX11, because the low level control necessary to make multiple GPUs (mGPU) appear as one to the game engine, was largely in the hands of AMD.  Prior to the BFA Patch, the crossfire profile was working flawlessly for me (2 x 580 8gbs).  In order for crossfire to work with DX11, exclusive fullscreen (EFS) needs to be enabled in game.  Blizz, removed EFS in DX11 for various reasons, that benefit some and have a negative impact to others.


          2.) In order to get mGPU's working while using the DX12 API, the game developer has to explicitly add the support for it.  DX12 takes the control away from the hardware developers and passes it to the game developers.


          My big question is - IS there anything AMD is able to do, in order to get crossfire working with a windowed fullscreen with DX11 in their wow crossfire profile?


          Blizz is largely ignoring this, they appear to be sticking to their position that this was a positive change. Maybe it is, but form a players perspective there's no way to tell the complete breadth of this issue.


          Here's a forum thread on the WOW forums that may shed some light on the ordeal, along with some supplemental twitter spam:

          #BattleforFullscreen - World of Warcraft Forums https://us.battle.net/forums/en/wow/topic/20766616509?page=1

          #battleforfullscreen hashtag on Twitter