Power saving for desktop pcs

[Rashkae]

Eric S. Johansson wrote:
>
>>
> 
> I want the same thing except for servers.  I would love it if there was some way 
> to reduce power consumption for disk drives but I think the easiest thing would 
> be to scale back the CPU clock rate during times of low load which would reduce 
> a major source of heat and between that and high efficiency power supply units, 
> that's the best we are going to get for awhile.  Even still, it would be great.
> 
> 

Ubuntu, like many current distros, is configured out of the box to use 
the 'on demand' cpu speed governor.  It already does what you want.  I 
would be very careful with trying to aggressively spin down the hard 
drive.  It may well not be worth it unless you really need to conserve 
battery power.