[G4] G3 / G4 ?

[Hal]

Dan,

Congrats on getting  G4 ZIF for your beige tower. The reason you're  
seeing the chip running at 333 is probably that the motherboard  
jumper block is still set to 333 from the factory. The Sonnet card  
probably overrides this, but the Apple ZIF is clocked by the original  
jumper block. You can pull off the jumper block and use mini jumpers  
(like the kind you use to set jumper settings on a hard drive) to  
adjust the speed. I always found Radio SHack to be a good place to  
get these.

There is a great page on jumper settings for G3s at xlr8yourmac.com.  
If the chip is rated at 400mHz, you can probably push it to 433, but  
I'd get it running at 400 first.

I just upgraded a 400mHz G4 tower (Gigabit Ethernet) with a 533mHz  
chip I had laying around from another G4 tower I no longer own. I was  
able to reclock it to 550 and even 600mHz and it's completely stable,  
though your mileage may vary.

Good luck.

-Hal

On Mar 18, 2007, at 6:57 PM, Dan A Currie wrote:

> Hello All,
>
> I have a very interesting question for you all.
>
> I recently purchased this:
>
> an APPLE POWER MAC G4 400 MHz, ZIF Chip. Works in the G3 BEIGE OR B/ 
> W MACS and Sawtooth G4's. IN GOOD WORKKING CONDITION. You will need  
> to move the plastic jumpers on the motherboard. www.apple.com will  
> assist in this process. Sample photo used. Pulled from a Working G4  
> 400Mhz, Sawtooth G4.
>
> Well, I installed it in my daughters Beige GE MT 333 and it  
> works ... sort of. When I go to system profiler it says under  
> Processor G4 / 333.
>
> Now I paid a whopping $75 for the entire computer 2 years ago so i  
> am not too worried about voiding a warranty.  What would be a  
> reasonable speed to overclock the Mac and exactly (talking to a 3  
> year old here) how does one go about that OR would it be better to  
> reinstall my old Sonnet G3/500 processor??
>