Crossfire doesn't work

from AshesoftheSingularity Forums

Hello,

I was wondering if there is some type of setting I need to apply to get crossfire working with Ashes of The Singularity? Crossfire works on the DX11 but not the DX12. I only have one of my GPU's working during the DX12 version of the game. I can only assume the game is so new that either the developers and or AMD has not released any updates or drivers. 

My system specs are:

AMD FX 8350 4.4ghz. // Asus Crosshair v Formula z MOBO // G. Skill Trident X 16gb (2x8) Ram // Radeon R9 295x2 GPU // Corsair H100i CPU cooler// Corsair RM1000 PSU // Windows 10 Home 64bit. (Upgraded form Windows 7) // Catalyst Control Driver 15.7.1 (newest amd driver) // Samssung 850evo 1tb SSD for games // Samsung 850 Pro 256gb ssd for OS // 

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Reply #1 from AshesoftheSingularity Forums Top


Hello,

I was wondering if there is some type of setting I need to apply to get crossfire working with Ashes of The Singularity? Crossfire works on the DX11 but not the DX12. I only have one of my GPU's working during the DX12 version of the game. I can only assume the game is so new that either the developers and or AMD has not released any updates or drivers. 

My system specs are:

AMD FX 8350 4.4ghz. // Asus Crosshair v Formula z MOBO // G. Skill Trident X 16gb (2x8) Ram // Radeon R9 295x2 GPU // Corsair H100i CPU cooler// Corsair RM1000 PSU // Windows 10 Home 64bit. (Upgraded form Windows 7) // Catalyst Control Driver 15.7.1 (newest amd driver) // Samssung 850evo 1tb SSD for games // Samsung 850 Pro 256gb ssd for OS // 
End of quote

Crossfire/SLI support isn't yet in for DX12. We're actively working on it, and have some proto-types working. Our hope is to have it ready in a few months.

R9 295x2 will be a little tight because though it has 4GBs, if you use Crossfire you only get 2gb per card. So in crossfire you'll have to run as a 2gb card. 

Reply #2 from AshesoftheSingularity Forums Top

Crossfire isn't working in DX11 mode for me, disappointed it's be so long for DX12 support.

 

4790K, MSI 390/290, asus maximus hero vii, 32gb gskill tridantX 2400 mhz, wins 10, 2 x 500gb samsung 850 evo's.

 

Galactic Civilizations III
Reply #4 from Stardock Forums Top

the R295x2 has 8Gb. 4Gb per GPU. So eventually they will be able to share the memory.