Cooling and Temps on a G4 Tower

[garycurtis]

My Mac G4 is running at 41° C, according to Temperature Monitor. That equates to 105°F. Is that within accepted limits?

I have a supplemental fan in a PCI slot, the main fan in the power supply, and a CPU fan attached to the Sonnet Crescendo CPU. Makes a bit of noise, but not objectionable.

 

[Little Endian]

Yes 105F is more than normal in fact that is pretty cool. I assume that 41/105 reading is from the drive bay? The CPU and GPU temps in my MBP can easily hit 150F under heavy load an this i a Core 2Duo Laptop!! My Quad Core G5 can easily hit near 200F for GPU/CPU temps, thats pretty close to boiling water but still no problems.

 

[Knoodles]

Like said. You are cool. Maybe you don't need that extra PCI fan? Although that fan might be for the ethernet card. IIRC my old G4 had a small fan behind the CPU for that. Here are my temps from a G5 Dual 2.0.

HD Leopard 122°
HD: Tiger, iLIFE 103°
CPU A 139°
CPU A Ambient 79°
CPU B 130°
CPU B Ambient 81°
Backside 117°
Drive Bay 86°

 

[garycurtis]

Temperature Monitor is a Made in Germany shareware utility. I don't know where or how it senses temperatures. I did go through my G-4 chassis and tape off open passages so all the air flows through the power supply inlet and fan.

The auxiliary fan in a PCI slot sits next to the Graphics PCI card and exhausts to the outside. The CPU fan blows through a bunch of heat sink fins and I guess that airstream just gets picked up by the power supply and PCI fans and dumped externally.

Thanks for the info.