[vdr] Re: Shutdown frontend for saving power and heat

[Onno <onnok@web.de>]

[..}
> I've done this with a true-RMS power measurement-set. Not the best one, not
> very accurate, but at least there shouldn't be any conceptual errors in the
> measurment process. Simply calculating from measured voltage and current
> will not work, because one have to take the current waveform and power
> factor (phase shift) into account. (Well, I'm pretty sure you are aware of
> this ;-)
>
> The only problem with this measurement setup is the unknown and most likely
> non-linear efficiency ratio of the PSU. But it should be sufficient to get a
> rough idea of which power saving strategies really saves power ;-)
Hmm,
i assume that most of the people do not care about energy cost first,
but heat, since a two card system with 3-5 disks gets very hot.

so why not measure the decrease in temperature, for cpu's this is
also the more important it would give at least those an answer
whore care about heat, and it is easier.

just my 2 cents

Onno




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