S.Stanley asked: >I am thinking somewhere around a 1.2 or 1.3ghz >upgrade. Anyone have any good recommendations as to which ones work >better than others? Any help is greatly appreciated. I put an OWC Mercury Extreme 1.33 GHz in my AGP/450 about 6 months ago. It has been flawless. Pure plug-n-play, boots in both OS 9 & OS X (now 10.3.5) w/out problems. Cost $375 at the time.