so im considering upgrading my 800 MHz PowerPC CPU to something more powerful like a 1ghz or 1.5 and im wonder how simple it will be, like can i just replace the existing 800 with the 1.5 and the device will run it or is it more complicated than that, also did any dual 1ghz PowerPC CPU's ever exist? just wondering so i can make upgrading easier since im currently running on a dual 800 MHz