system power profile

[Markus D.]

On my laptop (IPC Highnote S15) I even notice a whistling sound from the 
power supply area if it is throttling the CPU.

Kevin Oberman wrote:
> 
> But don't assume that the CPU is actually changing in response to the
> change. I have seen multiple reports that some (many...all) systems
> don't actually change CPU speed when this changes.
> 
> I use gkrellm's gkx86info plug-in to monitor the CPU speed. The speed
> on my system (and others from multiple vendors) is set by power status
> at boot time and never changes until the system is re-booted. this is
> true for both ACPI and APM.