hmmm best bang for buck thing i ever bought was the AMD64 e6 3k...rm 315...so cheap man... and 1.8 oced to 2.75.... almost close to 60%oc....adn rock solid stable..been runnign non stop for bout 2 weeks now... nuthing happen yet.... number two on the list would be my old 6600XX(cant remmeber wat it was)...oc great and very powerfull that time.....and third on my list would be artic silencer 6 for the 6600..so cheap so quiet and so good....