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Why does the fan keep running on my G4 while it sleeps?

G4s and Sleep Mode

If your Power Mac G4 has an ATI Rage 128 PCI card, the fan on your computer will continue running when it goes into sleep mode. This is because the ATI card does not have a low power setting. If the hum really bugs you, you'll have to shut down the machine rather than letting it sleep.

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