it wouldn't overheat. it would just explode and make a nukbomb. Cortex A8 was never designed to run 2Ghz. anyways, i found a post somewhere showing n900 oced to 1,6Ghz. it had a cooler attached on its back but do not try it. seriously, if you want to overclock dont go further than 1000 EDIT: my lowest temperature was 22C