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Archive for the ‘Energy efficiency: PCs’ Category

Power Options implemented on all IT Windows XP domain workstations.

Thursday, May 28th, 2009

We implemented GPO policy scripts on all IT Windows XP workstations that are part of the STB domain.

The script implements the following settings:
1. Monitor time out after 30 minutes if running on AC Power.
2. Disk time out after 60 minutes if running on AC Power. The disks are completely stopped.
3. System Standby after 120 minutes if running on AC Power.

A further implementation will be to Hibernate after 180 minutes if running on AC Power.

The current script will not change Power Schemes on any Vista or later Operating Systems. For Windows Vista and later Operating Systems, we will implement GPO policy templates. This will be implemented at a later stage.

Buying the right, green PC

Wednesday, April 15th, 2009

Greener computing does not simply mean minimising energy consumption of the PC during its operational life, but also during its full lifecycle from “cradle to grave”. It also means minimising material throughput i.e. recycling and re-using, and disposing of hazardous e-waste responsibly. So while much of this blog and a big part of our sustainable IT campaign is focused on energy efficiency in operations and e-waste, it is also important to review our PC procurement policies. (more…)

Printing footprint @ Stellenbosch University

Friday, March 27th, 2009

Further to Le Roux’s post – which indicates an average annual printing volume of 16 million pages on our network printers – I ran the numbers through HP’s carbon calculator (in this post). The results are … sort of scary….


Activating Power Management on PCs saves money

Thursday, February 5th, 2009

Gartner has published an article that shows that by simply activating power management on PCs, an organisation of 2500 PCs can save 43% of the power consumed by those PCs (433 MWh), which translates to an annual saving of about R240 000 in South African terms. Furthermore, planned Eskom tariff increases will escalate these savings rapidly. (more…)

PCs and aircons

Thursday, December 18th, 2008

Many people don’t realize that the average desktop PC wastes nearly half the power it draws from the wall socket. This excess energy is dissipated as heat. The average server wastes 30 to 40 percent of its power.

From an address by Dr. Dileep Bhandarkar, Distinguished Engineer, Microsoft at 2008 CeBIT

The advent of PCs in offices also partially explains the explosion in installations of air-conditioning units in (more…)

Activate PC power management to save energy

Wednesday, November 26th, 2008

Most newish PCs and all notebooks/laptops have Power Management settings that enable you to minimise the machine’s power consumption, especially for the times when you are not using it. It is possible to save 10% of its power requirement per day through implementing these simple settings which progressively switch off components such as the screen, hard drives, processor, etc. Information Technology has created a help document (pdf) to guide you through setting power management on your PC for Windows XP and Vista. If you would rather want a technician to talk you through the procedure, contact the IT Helpline at (021-808)4367 or ithelp at sun.ac.za.

And of course it should be standard practice to switch off the PC (at the wall socket) when you leave work and over weekends. Also note that screensavers use electricity unnecessarily; rather set your screen to switch off.

Bespaar krag deur die bestuur van werkstasies

Wednesday, November 26th, 2008

IT is besig om ‘n ondersoek te doen, oor hoe krag bespaar kan word, deur die bestuur van werkstasies. Daar word gekyk na die afskakel van werkstasies wanneer dit nie gebruik word nie, asook die afskakel van monitors indien die werkstasie nie gebruik word nie. (more…)