There a lot of confusion in this thread about how SLI/Crossfire work.
SLI/Crossfire cards and systems dont share VRAM between GPUs.
So the effective VRAM of a dual GPU with 2 GB is what is assigned to a one GPU.
That mean that in a dual GPU card with 2 GB of VRAM there a 1 GB of effective VRAM becouse, in fact this card are two single cards of 1 GB VRAM.
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