I recently was able to purchase an 3Ghz 8-core Mac Pro, 2006 model. While the machine speed is everything I had hoped for, the sound is a bit more than I had hoped for. I'm suspecting that the graphics card- the Radeon X1900b model is the culprit. I do work in Final Cut, but no games. I would like a quieter graphics card, but one which will still performs adequately with Final Cut Any suggestions?