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Home▸ Forums▸ Pismo with G4 550mhz Getting a tad warm — #2▸ Pismo with G4 550mhz Getting a tad warm — #2
Post #2 by Byrd
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Hi,

one of the shortcomings of the Pismo is providing adequate (stock) cooling on an upgraded CPU. The stock G3 doesn't need much heat disipation and I only once recall the cooling fan coming once on a very hot day in all the years I used mine. When you add a G4 into the mix (or a Powerlogix G3 900Mhz which never lived long due to overheating), the little aluminium plate the sits on the top of the CPU along with a tiny heatpipe going to a 15mm fan is woefully inadequate.

Therefore you need to look into some sort of custom cooling for the G4. First I'd take apart the heatsink investigate your options - you could potentially beef up the heatsink with a copper slug, or make the tiny little fan run all the time, not once in a blue moon. A PCMCIA cooling fan might also be a possibility.

JB

mp.ls