I'm looking to order a 2.93 24" iMac. I don't normally play games, so I wasn't considering the 4850. I figured that the 120 could handle the HD tv that I watch. However, I've been reading here on the board that Snow Leopard will take advantage of the GPU. For that reason ("future-proofing"), should I go for the 4850, even though I don't play games?