On Jan 13, 2006, at 10:41 AM, marco santos wrote: > how can I upgrade my G4 450mhz up to 1.0 ghz? See www.xlr8yourmac.com and www.barefeats.com (particularly the former) for site and user reviews. I don't think that you can really go wrong with any of the accelerators avaliable for you machine; although I am suspicious of the performance vs. value ratio of the higher clock speed upgrades that have come out recently that don't have a level 3 cache. Phil