At 3:11 AM +0200 10/01/2012, Valter Prahlad wrote:
Il giorno 30-09-2012 19:06, Dan ha scritto:
I was astonished to discover it sucks 17 Watts when off! :-o
Correction: on a second, more accurate measurement, my G5 seems to draw 9
Watts when off (instead of 17
Ok. That's MUCH better. < 10 watts is what I would expect;
basically the same as a couple of nightlights. 17 is a problem.
It looks like electronic engineers have a different meaning for the
word "off" than normal people.
When shutdown, the machine still has a small draw to keep the p/s,
PMU, part of the motherboard, and keyboard running.
Since magic is unreliable, you gotta use something to keep the
machine warm, so it will respond to the boot button on the keyboard,
etc. Likewise for displays and other devices - people love that
"instant on".
Keep in mind that if you disconnect power from the Mac, it will keep
that PMU running anyway, using the pram battery.
Still too much for me anyway. It would cost me around 10 euros each
year, just for being connected to the mains. (but since it's
connected to an UPS that I switch off when not in use, it doesn't)
Killing power to a system is fine. Just keep in mind that it will
require a new pram battery sooner.
There's also the school of thought about the "jolt" of hitting a
machine with a cold start every day. Wear and tare on the
components, and all that. Personally, except for HDs, I never bought
into that, for home-based systems at least.
- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.
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