The definitive “tom’s hardware” website (check out their CPU/GPU comparison charts)
I like looking at this NVIDIA GPU’s comparison chart on wikipedia
Similar list for ATI GPU’s
newegg.com for all your hardware browsing and bargain finding needs
article on nvidia’s 7900, also talks about how NVIDIA doesn’t manufacture their own stuff, instead companies like BFG, XFX, PNY and eVGA do it.
