cpu scaling questions

n0dalus n0dalus+redhat at gmail.com
Sat Oct 7 13:07:30 UTC 2006


On 10/6/06, Peter Jones <pjones at redhat.com> wrote:
>
> It's important to note that the rate of heat production will be lower
> this way, but the total heat produced (i.e. actually energy used) during
> the lifetime of a given job will be slightly higher.
>
> That is, it doesn't save any power at all, and it produces slightly more
> heat in the long run.  But if you've got adequate HVAC you'll *notice*
> less of the heat when you're sitting in front of the machine.
>

The resistance of the wire does increase with temperature, so there
may be some advantages to running at a lower temperature for longer.
I'm not sure if this effect would be enough to reduce overall power
usage, but it might be.

n0dalus.




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