6GB of GDDR5? Damn. That looks so awesome!
keep in mind its 3gb each, so I think its just 3 gb since its crossfired techinically (because vram isnt additive). if it was 6 gb each, then its basically 2 sapphire toxic 6gb in crossfire, and thats just plain overpowered.(and way to costly)
@aboves first link confirms my statement about it really being 3gb