Quote Originally Posted by Shadowmage View Post
Although voltage is a large part of power consumption, frequency is as well:

Power = <some constants>*Vdd^2*f

So if the frequency is say at 600MHz for CPU0 while the other cores are running at 3GHz, then CPU0 will use 0.6/3= 20% of the power of the other CPUs.
I'm little sceptical about that. When the core is in idle, the most power consumption is coming from transistors leakage because of insignificant amount of transistor's switchings. So frequency reduction can't help here a lot, imho.