Ok, I have my Powermac G4 400, I have an offer to upgrade it to a dual G4 500 for $600 aprox. I may get a dual 800 for a bit more, but lets work with the dual 500Mhz. Would that be a good deal? I need to do some rendering, I know I can get another G4 400 for around $1000 (I'm in Venezuela things are a bit more expensive). What do you think? To spend the $600 in a dual 500Mhz?