[LINK] How many Newspapers does it take to build Ayers Rock?
Marghanita da Cruz
marghanita at ramin.com.au
Thu May 14 12:34:52 EST 2009
David Lochrin wrote:
> On Wednesday 13 May 2009 13:44, Glen Turner wrote:
>> Electricity-wise you're saving what [with an X-terminal] over a
>> typical corporate client PC? Certainly the loss of a hard disk.
>> Maybe the move from a Pentium to a Atom class of CPU. But
>> exactly those savings would be made by using a Atom-class
>> desktop with flash disk.
> I was writing specifically about electrical power requirements. But there's no reason why an X-terminal can't use a fanless low-end Intel processor with no hard drive and embedded Linux if that's a better cost option.
> I don't have time to comprehensively research the energy savings, but here's one comparison I just happen to know about. My HP d530 "small form factor" desktop requires 185 watts according to the Technical Reference, whereas the NCD 900-series thin client requires only 26 watts (both figures do not include the monitor). These days a diskless Linux-based thin client would probably be a better way to go.
> And you'd have to factor in the energy saved with lower (much lower!) support requirements.
An interesting test is the electricity consumption of the powerpack without a
computer connected. I got a bit of a surprise:
> The flip side of reducing e-waste is that there have been improvements in energy efficiency. In the case of the Versa 2200c - the power adapter alone, without connecting it to the notebook drew 7Watts of power. In comparison the power adapter for the 1997 NEC Versa 4230, without an indicator light, and a 2004 Targa, without with an indicator light in the adapter, disconnected from the laptop, drew less than 1 Watt (didn't register on the power meter which has a 1Watt threshold).
The no-brainer about smaller equipment can be demonstrated in refridgerators,
washing machines, dishwasher...Note, in my view, this is a shortcoming of the
energy efficiency rating system and obviously affect energy costs.
> Brand Model Volume Electricity Use CO2(7)
> LIEBHERR KP4260 405 litres 200 kWh/year 192,000 g/year
> GRAM M56 GRAM KS220 205 litres 217 kWh/year 208,320 g/year
> GRAM M60 GRAM KS290 286 litres 243 kWh/year 233,280 g/year
> GRAM M60 GRAM KS360 354 litres 257 kWh/year 246,720
> MIELE K8952SD 413 litres 272 kWh/year 261,120 g/year
> FISHER & PAYKEL E373 373 litres 296 kWh/year 284,160 g/year
> WESTINGHOUSE Side by Side RS645 643 litres 830 kWh/year
Marghanita da Cruz
Phone: (+61)0414 869202
More information about the Link