Underclocking RAM bus

Hello -
I have a bunch of G4 Macs in my lab that run on PC133 RAM chips, is there
a way to underclock the bus speed from 133MHz down to 100MHz? I have many
PC100 chips that I'd like to use in these faster machines.

I hear one can do that on Windows machines somehow. Is this possible with
a Mac G4?

Thanks,
Peter L.

-- 
Peter Lawrence
Computer Lab Administrator
UC Berkeley Extension, SOMA Center
Phone: 415-284-1075
Pager: 510-430-7691
email: pjl@unex.berkeley.edu
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