Yokemate of Keyboards
Posts: 11795 from 2003/5/22
> Is it possible to change the G4 on the CPU card for a higher clocked
> model? Don't know if they're pin compatible with newer versions.
There's been some discussion on MPC7447A and MPC7448 and their pin compatibility with MPC7447 some years ago:https://morph.zone/modules/newbb_plus/viewtopic.php?forum=2&topic_id=6252&start=50
Even if the 7447 could be replaced by a successor part in terms of pin compatibility (which has so far not been definitely answered), there're still the potential issues of SmartFirmware compatibility and cooling.