Re: problem with cpu eating too much power, prize given if solved

Pavel Machek
2004-06-29T22:11:11Z

Hi!

> >>Many times I just want to read the screen, eg emails or documents,
> >>and then still the cpu will be in idle mode, where
> >>it uses 7.5 W out of the about 15 W that the whole machine uses.
> >>I have found out from Intel data sheets that my
> >>Mobile Intel Celeron 2.0 GHz CPU consumes 7.5 W in idle loop/
> >>stop grant/sleep states, (and 5.0 W i deep sleep state).
> >>
> >>So I would like to have the CPU stopped completely (consuming 0 W)
> >>while I still could read the screen. In that way I should
> >>be able to have about double the lifetime on the battery,
> >>going to about 7 hours from the 3.5 hours I have now.
> >>
> >>I would like the machine to wake up again by any keystroke
> >>on the keyboard or mouse input. I would like the input to be
> >>reacted upon (not just used to wake up the system, and
> >>then forgotten).
> >>
> >
> >S1 is what you want... but... if you get what you asked for,
> >do you realize that for example clock would not update on the desktop
> >in this mode?
>
> Which hardware can power down the CPU on its own?

I thought that CPU powered down is pretty much definition S1.

Pavel
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