Question about fan during sleep

Wild wrote on :

I've got a G4/466 (512mb RAM) with a grappler SCSI card. Two hard drives... One runs OS 9.2.1 and the other OS 10.1. When I would put my computer to sleep under OS 9, I am always able to hear the fan going while it is "sleeping". Under OS X, the fan doesn't run. Is this normal for my machine? TIA

WildStar ,,,^..^,,,~