bh11+@andrew.cmu.edu (Braddock John Hathaway) (03/06/91)
I was just wondering ... what would be the effect of putting a 20MHz 68020 in a stock Mac II ... would there be a speedup or would the chip just run cooler than before? I realize that I am showing my hardware ignorance by asking this, but I'm curious anyway. Thanks, Brad -------------- potentially long .sig file ahead ------------- Cartoon Laws Contributed by Trevor Paquette & Lt. Justin D. Baldwin Cartoon Law III. Any body passing through solid matter will leave a perforation conforming to its perimeter. Also called the silhouette of passage, this phenomenon is the speciality of victims of directed-pressure explosions and of reckless cowards who are so eager to escape that they exit directly through the wall of a house, leaving a cookie-cutout- perfect hole. The threat of skunks or matrimony often catalyzes this reaction. Brad Hathaway work phone1: (412) 268-8454 (Wed morning only) work phone2: (412) 268-2833 (most Tue/Thu mornings) email:bh11@andrew.cmu.edu -------------------------------------------------------------
jcav@ellis.uchicago.edu (john cavallino) (03/06/91)
In article <Abp4crq00Uh_M4aJxH@andrew.cmu.edu> bh11+@andrew.cmu.edu (Braddock John Hathaway) writes: >I was just wondering ... what would be the effect of putting a >20MHz 68020 in a stock Mac II ... would there be a speedup or >would the chip just run cooler than before? > >I realize that I am showing my hardware ignorance by asking this, >but I'm curious anyway. > >Thanks, > >Brad The speed (mHz) at which the processor runs is determined by a crystal oscillator, not the chip itself. The speed rating on the chip is the manufacturer's recommended max clock rate for that particular chip. Putting a 20mhz 68020 in a stock mac II will run the chip at the clock rate of a stock Mac II, which is a little under 16mhz. Sorry. -- John Cavallino | EMail: jcav@midway.uchicago.edu University of Chicago Hospitals | USMail: 5841 S. Maryland Ave, Box 145 Office of Facilities Management | Chicago, IL 60637 "Opinions, my boy. Just opinions" | Telephone: 312-702-6900