Category Archives: Advice

The Power of Sleep – as calculated by a spreadsheet

In a previous post, I explored the power savings that can be achieved by allowing your PC to enter sleep mode after 30 minutes of inactivity. I wondered how much more energy could be saved if you actively put your … Continue reading

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Videoconferencing your way to a lower carbon footprint

The University has several dedicated videoconference (VC) rooms, which enable staff to have online meetings with colleagues in other institutions. There are also lecture theatres with VC equipment installed which allow students to attend a lecture without needing to travel … Continue reading

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More PC power consumption figures

I’ve tested the power consumption of a couple more typical University desktop PCs. I also had some feedback on the shocking 9W consumed by the Viglen Genie I tested while it was ‘switched off’. More recent Viglens only use a … Continue reading

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Technically speaking: Watts vs. Volt-Amps

This university has a reputation for engineering excellence, and so when one of my colleagues queried the figures in the previous post, I thought some explanation was required. The question hinges on “How much power does a device use: is … Continue reading

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Let sleeping computers lie?

The University will soon publish its new policy on the power management of IT equipment, and one of its provisions is that computers should be switched off or enter a low-power mode when not in use. I thought it would … Continue reading

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