And stop saying that AMD has quad scaling working while NV doesn't. Nobody has ever tested NV scaling at eyefinity/surround resolutions yet, the highest tested was 2560x1600, and at the resolution no vendor has a quad setup that is a worthwhile investment.
Yes it has been tested, and no it didn't scale.
http://www.tomshardware.com/reviews/quad-sli-nvidia-surround-geforce-gtx-480,2745-9.html
In fact 4 cards perform worse on average than 3.
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