Will dx12 double the vram in sli/crossfire?

[amr sameh]

i researched this topic a lot and nobody seems to have a clear answer, IS dx12 capable of combining ram so that if u have 2 4gb cards they would be 8? this will make the 970 issues go away in sli. i wanna know cuz i am currently buying a 970 and i wanna know if in the future i can play 4k by putting another one in sli??? 

[Jobbe03]

No one has a clear answer because no one really knows yet. The rumor is it will, but it's just that. A rumor

[ESPclipse]

I believe the ability to do that is up to the GPU manufacturers, Nvidia and AMD. Our current graphics cards are not manufactured to divide memory across cards, but even if it were possible, some feature like that would likely be handled at the lower, driver level, not the graphics API level. So I would assume that we will not see VRAM division from DX12

 

EDIT

There is software, like AMD's Mantle API, that can treat two graphics cards as two independent cards, thus splitting the processing load AND memory, should each card's driver allow. Many speculate that this could be a feature available in DX12, which, I believe is the more likely.

[t895]

I wouldn't think that it would, because I think that both GPUs would need to have the data stored in VRAM accessible on both cards so they can both process it at once. This is at least my theory on how performance is benefited by dual or more GPUs. Unless someone else truly knows how it works.

[Guest]

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[Briggsy]

explains it better than I ever could. 

http://www.dsogaming.com/news/directx-12-has-the-fastest-adoption-since-directx-9-explicit-multiadapter-explained/

 

DX12 will support independent memory allocation, meaning that developers will be able to use the total amount of VRAM that is available on Crossfire and SLI systems.

 

*edit* facepalm, its a damn necro thread.