Okay, just wondering the performance difference between an x600 Pro PCI-Express and a 9700 Pro AGP. I'm building a new system for a friend and just wondering the differences. We want to go with a newer PCI-Express motherboard, but the only option he can consider is the x600 Pro. Or, if he goes to an AGP board, the 9700 Pro is the option. So, since I can't find a site comparing the two directly.