So, after all the issues, Iv'e finally upgraded my Power Mac G4 Cube as much as I could. New AGP Graphics card, Maxed RAM, AirPort Card, and a Bluetooth dongle. (even a new PRAM Battery and installed a base fan) Now, my question is, If I buy, say, an 800mhz CPU Card for the G4 Quicksilver, could I install it in my cube? I do have the know-how to do so. I'm just unaware if the socket would be compatible, and if the PSU would be able to handle the extra power draw. Not too worried about temps, I'll just slap some arctic silver 5 on it and install a bigger base fan.