[Gllug] OT: Burnt out power supply

Daniel P. Berrange dan at berrange.com
Wed Jun 21 16:28:47 UTC 2006

On Wed, Jun 21, 2006 at 05:03:11PM +0100, John Winters wrote:
> On Wed, 2006-06-21 at 11:03 +0100, Peter Ball wrote:
> [snip]
> > I've just been doing some power consumption tests because a customer was 
> > complaining about their electricity bill.
> > 
> > Sample system based on 300w power supply, 2.0Ghz Intel Celeron, 512MB ram, 
> > 40GB hd and comparison between 17" crt against 17" tft.
> > 
> > Power supply not connected to anything and just plugged into mains and supposedly 
> > switched off pulled 12w = 105 kwh per annum doing nothing.
> I've been wanting to do this sort of test for a while and there was a
> useful article about it in today's Independent.  As a result I
> discovered that Maplin do a suitable measuring tool for £25 and I've
> ordered one.  There's also an interesting looking gadget at
> www.electrisave.co.uk, but that's rather more expensive.

Dave Jones did some similar kind of power measuresments with a gadget
from ThinkGeek - the 'kill-a-watt'


Also interesting was the way he used it to analyze the effect of
the kernel 'dynamic ticks' patch


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