Does anyone know the dimensions of a powermac G4 power supply? I am planning of buying a powermac case and modding it to a pc. now my other question is what is a good pc powersupply that would fit in a PMac G4 any model.
Macs always seem to have rather large power supplies. I am sure you would be able to find a PC PSU that would fit with ease. I don't have any specs on it though, maybe someone else will chime in.
Earlier G4s had PSUs that were slightly modified ATX units for the most part. For the pinouts certainly, the dimensions may vary slightly. The Mirror door G4 had a different PSU. Different shape.
It sounds like he is sticking a PC motherboard into an Apple case. If that is the situation then just match the PSU to the PC mobo. Grab a 450-550w Seasonic or Corsair. You might have to slightly trim the rear plastic of the case I think.. but it should fit inside the case decently.
There are a number of pages around that bring up what you want to do, just look.