Well… according to the Energy Star calculator: http://www.eu-energystar.org/en/en_008b.shtml
a PC workstation with a 19" LCD will consume 1,692 kWh/year, if it is on 24 hours a day.
So 800 desktops over 7 years means you have consumed 9,475,200kWh, producing around 919,000 kilos of CO2.
And that is before you look at other costs like other peripherals and all the additional air-con required to keep them cool.
If you only had them switched on for the 8 hours-a-day that they are in use for, then you would only have consumed a third of that.
Graham Stewart on August 3, 2007 07:01 AM
Actually, it’s NOT 1,692 kWh/year. It’s more like 169.2kWh/year. And then do your calculation. 169.2 * 800 * 7 = 947,520kWh over 7 years.