What if I plug in two graphics cards with no SLI/Crossfire

[talal_tariq]

What will happen if I plug in two different cards in two different slots on the same motherboard?
Will only one work? Will both work? Will they support each others capabilities?

 

[ss202sl]

They will bot work, but they will be independent - produce separate outputs. Windows can utilize them to spread your desktop across 2 screens, but you would only be able to use one for gaming.

 

[Grugbug]

I've read where DX12 will allow the cards to be combined depending on developer support.
I think a tech demo was done using Ashes of the Singularity.