I have a nVidia 6600Gt on the way. I need a DVI cable. My Monitor has a max resolution of 1680 x 1050. The cables are about the same price but, do I NEED a Dual link for my resolution? I'm thinking no but, I'm not sure. Anybody know the answer to this, absolutely? I'd rather not have to pay even two dollars more for a cable I don't necessarily need. Thanks!