Overclocking!!

[appledyl]

How can i succesfully and efficiently overclock my iMAc g4? thanks. detailed answers appreciated.

 

[Hellhammer]

Macs don't have BIOS so overclocking is quite hard or maybe even impossible. Check out threads about it here

 

[MacHamster68]

here a hint
http://www.hardmac.com/news/2004/05/05/overclocking-a-g4-imac

 

[DoFoT9]

you would have to manually change the frequencies via soldering! goodluck with that one lol

 

[mike.coulter]

I have an iMac G4 and it already has overheating problems... I really don't think I could suggest that you overclock it. Unless you open it all up and change the cooling system?

 

[666sheep]

here a hint
http://www.hardmac.com/news/2004/05/05/overclocking-a-g4-imac

Above is for 167 Bus iMac (1.0 GHz+)
Here is what you looking for.

I OC'ed few 800 MHz iMacs and full succes was with only one. Only one of about 4-5, i don't remember now...
One had KPs, one had overheating problems, one refused to boot with OC'ed CPU.

Max stable was 900 MHz (100 MHz increase), max that i have reach with 800 was 1000 MHz (booted and KP after 5 mins - too hot).

So decision is up to you.

 

[mrsir2009]

Why do ya want to do that anyway...? Lol

 

[MacHamster68]

Above is for 167 Bus iMac (1.0 GHz+)
Here is what you looking for.

I OC'ed few 800 MHz iMacs and full succes was with only one. Only one of about 4-5, i don't remember now...
One had KPs, one had overheating problems, one refused to boot with OC'ed CPU.

Max stable was 900 MHz (100 MHz increase), max that i have reach with 800 was 1000 MHz (booted and KP after 5 mins - too hot).

So decision is up to you.

i knew its for the 167mhz model only, but it was only meant as a hint how and for the problems it will cause , the cooling system is the worst part on the iMac g4 , while the eMac which has the same processors but the heatpipe and coolingsystem is over-engineered and keeps it cool, even overclocking from 800 to 1.33 is stable and works , where as the iMac starts cooking and freezing even at mild overclocking attempts , reason a very small heatsink compared to the eMac and the fan is not as efficient , but quiet

so if the op urgently wants a faster iMac g4.... his best an safest bet is to get the 20" 1.25 model ,instead of trying to fry his iMac g4

 

[666sheep]

(...)
so if the op urgently wants a faster iMac g4.... his best an safest bet is to get the 20" 1.25 model ,instead of trying to fry his iMac g4

Hard to disagree with that

Only one benefit of OC'ing this iMac could be native Leo support: no OF hack and other tweaks needed to install.
...and maybe a little improvement of OP's soldering skills and iMac anatomy