it's a consequence of framework not having good power management/speedstep support, although supposedly it's gotten better recently. Using AMD chips is also no

it's a consequence of framework not having good power management/speedstep support, although supposedly it's gotten better recently. Using AMD chips is also not a magic bullet if you don't implement power management properly - a 25W AMD chip and a 25W Intel chip notionally pull the same power (although there are always games).