> Is the clock speed stated on Wikipedia (G4)
> the theoretical max cycles the cpus can reach?
> Because mine is listed as 500–867 MHz whereas if I do a cli c:cpu,
> I get the wonderful :
> [...]
> System: PowerMac3,1 [...]
> CPU0: 7451 (G4) Version 32768 Revision 515
> CPU0: CPUClock 1600000000 BusClock 99630669
> [...]
> ^Which is basically double the clock compared to what wikipedia states.

Yes, 867 MHz is the maximum rated clock frequency of the 7451. It can certainly reach nowhere near the MorphOS-stated 1.6 GHz. That's just MorphOS using bogus base values for some reason and thus calculating wrong CPU clock. Nothing to worry about and has happened before. It may have to do with your CPU card not being the original 350...500 MHz 7400 one.