I am building a new gaming rig for myself and I am torn between getting a P4 LGA 775 3.2 ghz. processor with a pci express mobo and pci express ATI X600 vid card or an AMD Athlon 64 3400+ 1 MB with a regular AGP slot and comparable $200 ATI video card? Is the PCI express worth it or should I go AMD then get a new mobo and vid card for it when pci express amd mobo's come out?