[G4] Bus speed limits

[John Niven]

Hah, hah!

Good follow-up question!

533 divided by 133 = 4 

that means that the 533 processor multiples the bus speed by 4 to get its clock.

450 divided by 100 = 4.5 

that means the 450 processor module multiples the bus speed by 4.5 to get its clock.

Replace the 450 cpu with a 533 cpu and it will run at 4 times 100 which is 400MHz. A downgrade!

You would need to change the jumpers on the 533 module to 5 or 5.5 times to get back the clock speed. This would require soldering.

John (running a 733 in a 350 by changing the jumpers from 5.5 to 8.0 giving a 800MHz Sawtooth)!




--- On Wed, 5/14/08, Eric Buczynski <emaxxx4 at warpmail.net> wrote:

> From: Eric Buczynski <emaxxx4 at warpmail.net>
> Subject: [G4] Bus speed limits
> To: g4 at listserver.themacintoshguy.com
> Date: Wednesday, May 14, 2008, 11:16 PM
> Thanks for the answers regarding PC133 RAM in a PC100
> limited bus.
> 
> Now, would the same thing apply to a G4 533 mhz processor
> from a  
> Digital Audio on a 450 mhz Sawtooth? I'd like to give
> him my old  
> processor, as long as it doesn't cause any harm to the
> computer. I  
> checked the Low End Mac website and saw the difference in
> bus speeds.  
> I'm not concerned about a higher bus speed but rather
> just making  
> sure the Mac I set up for him is stable enough. He
> doesn't plan to  
> play games on it but he wants to get on the internet,
> download  
> photos, and photo manipulation. Is the 533mhz processor
> possible on  
> the slower Mac?
> 
> Eric_______________________________________________
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