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2 680s as I want 4GB VRAM
VRAM does not double in sli/ xfire. If there are two 1gb cards, it will still be 1gb,etc
I'm pretty sure SLI'd this would give 4GB VRAM
http://www.overclockers.co.uk/showproduct.php?prodid=GX-181-EA&groupid=701&catid=1914&subcat=2255
No it wouldn't. Each GPU core has to have a copy of whatever it's trying to render from so 2gb is allocated to each core which means only 2Gb is usable.
2 680s as I want 4GB VRAM
No it wouldn't. Each GPU core has to have a copy of whatever it's trying to render from so 2gb is allocated to each core which means only 2Gb is usable.
Very funny, I'm suprised someone actually took it seriously
I made a similar decision last round and plumped for the 6990 over cf 6970's. Space, higher binned chips and the cost water blocks steered me to the 6990 and I have been very pleased with it.
Neither - a pair of HD7970s would give you the same performance for £150 less.
670 is a very solid choice this time round, seems pretty good on the limited info so far. But correct me if im wrong, is the current 690 not two full blown 680 cores on the one board? Just that nvidias last dual offerings were made with x2 mid range gpu's slightly underclocked.