Okey, here's the question. Let's assume that new iMacs will come with the ivy bridge and well different graphics of whatever type. If you have an imac running on sandy bridge is it possible to just replace the cpu and just out of theoretical interest the GPU keeping the old mobo ? All done by an expert rather than DIY at home. Would that, if possible at all, make any sense in terms of trying to sell your old (yet still new imac) and then buying new one ?