But seriously, if people are willing to pay $750 for a 1.7 GHz G4 processor then what will be the difference if people buy a PS3 instead?
Depends on why a person is buying either. If I want to run OS4, but it doesn't run on PS3, then buying a PS3 may be a complete and total waste of money. One person buying the CPU module to run OS4 gets to use it, the other person buying PS3 leaves it in the box until someone gets OS4 ported to it, forgets abotu the box, gets old and never gets to do anythign on his PS3. Maybe he plays PS3 games on it, but what does that have to do with OS4 at all?
It'd make sense to wait and see if OS4 is ever ported to it first if that is your reason to buy the thing.