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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > Why does powerbook have such low FSB?

Why does powerbook have such low FSB?
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Dedicated MacNNer
Join Date: Aug 2004
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Apr 12, 2005, 03:40 AM
 
Can someone explain that a little bit?Low FSB=Low performance?
thank you.
There were once four people named Everybody, Somebody, Nobody and Anybody. Somebody had to do a job, but Nobody wanted to do it. Nobody could see that Anybody could do it, and Somebody got angry about that because it was Everybody's job. Nobody ended up doing it, and it so happened that Everybody blamed Somebody when Nobody did what Anybody could have done.
     
Mac Elite
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Apr 12, 2005, 04:13 AM
 
Because it uses a G4, and the G4 can't currently handle technologies that would give it a high frontside bus.
     
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Apr 12, 2005, 09:45 AM
 
The PPC 74xx aka G4 uses a so-called MaxBus which is limited to 167MHz.

There were rumors about a successor called 7448 which should have a new bus running at up to 200MHz and a dual-core freescale PPC with true 400MHz DDR support. Whatever.

The G5s used by Apple run their bus at half respectively a third of their core frequency.
     
   
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