GT 640 3d vision
AVS Top Picks
Beware that 7750 lacks dual audio stream with the current driver. Avoid it if you don't own a HDMI 1.4a AVR. NVIDIA is the only choice for HDMI 1.3 AVR (or resort to dual graphics). I don't know the audio requirement of cdcellular, though. As for gaming,
GTX 560 (SE/Ti) > HD 7750 > GT 640 (DDR3) > HD 6670 > HD 6570 > GT 440 > GT 430
At first HD 7750 looks attractive, but I quickly realized that it adds nothing over HD 6570 as far as HTPC is concerned (except for one point: a quicker communication between system memory and video memory, that helps playing back HD 60fps videos with madVR).
Edited by renethx - 6/10/12 at 9:49pm