there's benchmark that show that the 3200+ (~$190), the one you should get if you want something not too expensive and good for gaming, is almost as good as the intel EE 3.2 (~$1000)
for mobo, you should get either dfi lanparty ultra-d, or abit an8 (for pci-e); for AGP, there are many choices, but the best choices from what i've seen is the msi k8n neo2 platinum and the abit av8 (or a8v, forgot) 3rd-eye