>> According to Apple the Q650 uses a 68040/66 and the C650 uses a 68040/50, 
>> at least that's what they posted in their Apple Spec Data Base on their 
>> Web page back in May. No Centris or Quadra is listed that runs at either 
>> 25 or 33 Mhz. They're all either 40, 50, 66 or 80Mhz.


my clock check results for my centris 650 come back with 25mhz.  The Quadra 650
seems to reach 33mhz.  Also the specs from mac catalog show these results.

sm


-----------my kingdom for a centris kernal-----------------------------------