Anyone has a clue if Apple use integrated Intel HD graphics in SandyBridge processors as it does in MBP ? I'm particularly interested if desktop CPU graphic (which I believe is lower spec than mobile HD2000 vs. HD3000) can drive 27'' display in normal desktop operations and discrete GPU can be turned off ? It would be also interesting to know if they use Sandy Bridge Quick sync for video transcoding - anyone have a clue about that ?