[SC.LUG] Going Green.

[David Holden]

On Monday 24 July 2006 14:44, Ian Molton wrote:
> Jason Lucas wrote:
> > OK, I'm getting more *into* green issues - I'm starting to really worry
> > about the state of the environment,
>
> Hey there.
>
> you need to chill a bit. those watt ratings are the theoretical MAX
> output of the PSU.
>
> they are also approx. 90% efficient.
>
> you will find the typical PC (nothing fancy) probably uses ~20-30 watts
> when its not doing much and perhaps 60-100 when its running flat out.
>
> My via board uses about 1.5 amps on its 12V supply, meaning its using
> under 24 Watts.
>
> The reason these 'gaming' PSUs have such huge ratings is that they have
> to be able to supply a _stable_ voltage, and that can be hard on a
> heavily loaded system - transient currents can be orders of magnitude
> higer than the typical running current.
>
> My biggest annoyance environmentally is that I like to keep my PC
> running. it doesnt have to be _doing_ anything, but I like to simply sit
> down and have it showing what I was last doing.
>
> standby would be fine for that (suspend-to-ram) excapt my old CRT isnt
> able to cope with the constant power cycling and I cant afford to
> replace it with an equivalent spec (1600x1200) LCD. so Im stuck leaving
> the machine and CRT running.
>
> those of us who like 3D screen savers should also probably consider the
> envirnomentla impact - video cards often draw way more power than the
> main CPU these days.
>
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 We also have to have a machines running overnight to back them up.

It would be nice if they could standby and resume at a predefined time for 
this.

Dave.


-- 
Dr. David Holden.

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