I was looking at the new iMacs, and I wondered, is it even worth it for people to buy the mac pro over the iMac that are looking for a college computer? Many won't ever need the power of the Mac Pro, and the iMac is much cheaper. Mostly I am talking about standard work on them, which both can handle. The only thing is if you were to play games, you would need a good graphics card. But, is the graphics card of the iMac (best one) good enough? Its the NVIDIA GeForce 8800 GS with 512MB memory. Also, what is the difference between that and the one the Mac Pro has, NVIDIA GeForce 8800 with 512MB memory and two dual link DVI. So my question is, what is two dual link DVI?