You can upgrade SOME computers to upgrade the Mhz/Ghz, but its fairly hard, and on an iMac G4 is even harder, and seeing how you don't seem to know all that much about computers, i'd say don't try it
Also on SOME computers you can overclock it either by open it up and changing things around(again very hard and even harder on an iMac G4) or I think there was an ''App'' that used software to overclock an iBook G3(link-http://www.xlr8yourmac.com/systems/ibook_2002_overclocking.html, but their is no "app" to do that on your iMac that I know of)
mentalguitarist said:
o well i was just wondering because i was gonna try out a game but i dont have the minimum requirement of GHz on my computer...
Not worth the risk..sorry