After reading the article on 'G4 cracked to 1ghz', I was inspired to search the net for information on overclocking my machine. http://webusers.warwick.net/~u1034376/web .Apparently ('cause I just learned this) I have a Power Macintosh G4 (sawtooth) edition and I was able to up from 400Mhz to 450Mhz, a rather modest increase. I was rather hoping to achieve 500Mhz. I am curious if any others have been successful with modifying their machines of the same type from 400Mhz to 500Mhz. I am also considering purchasing the Sonnet Encore/ST G4 Duet (Dual 500Mhz G4 card) I am interested in any others experience with this card .