There you have it!!
http://www.g4noise.com/forum/index.php?act=ST&f=18&t=153
just found this on MacFixIt.com:
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Updated Thursday, January 30 2003 @ 07:15 AM PST
Today's Featured Article
Late-Breakers
Apple: OS 9 Booting Power Macs lack new noise reduction system
We have confirmed that Apple's Mac OS 9 booting Power Macs - which top out at 1.25 GHz and carry a $100 price premium over their OS X-only booting counterparts - lack the new thermal cooling system that provides the new, up to dual 1.42 GHz Power Mac G4s with significantly quieter operation.
Nathalie Welch, a spokesperson for Apple, told MacFixIt:
"I cannot get into all the details but the new Power Mac G4's that boot into Mac OS X have a completely new thermal design resulting in more quiet operation. The Power Mac G4 that boots into Mac OS 9 is based on product available prior to the new introductions."
The OS 9 booting models also lack FireWire 800, AirPort Extreme, and Bluetooth wireless capabilities.
Now that sucks doesn't it!!!