Re: PROBLEM: Celeron Core

[Andi Kleen]

> I believe that all throttling does is forcibly halt the CPU on a 
> particular duty cycle. This will reduce the rate of power consumption, 
> but reduces the CPU performance by a greater amount (since even at 100% 
> halted the CPU still consumes power) and so actually reduces performance 
> per watt. It will spread the heat and power usage produced from a given 
> workload task out in time (thus its usefulness in limiting CPU 
> temperature) but will consume more power overall.

...and  more importantly deep sleep states in idle save far more power than
anything else and with throttling the CPU is idle shorter.

-Andi
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