Dell has pledged to cut the power consumption of its PCs and laptops by 25 per cent by 2010.

The savings will come from better circuit designs, more efficient fans and improved power management systems.

Dell will also work with suppliers to cut power use, and said that it is making the changes to meet customer demand.

"Our customers are inspiring us to address the environmental challenges facing our planet," said Albert Esser, vice president of power and infrastructure solutions at Dell's Product Group.

"We have listened to them and are designing next-generation technologies that dramatically reduce energy consumption, drive meaningful cost savings and help achieve a low-carbon economy.

"It is the right thing for our business, our customers and our shared environment."

Dell has been trumpeting its green credentials with a string of recent announcements.

The vendor pledged to minimise its carbon output in September 2007, and began the 'Plant a Tree for Me' campaign which other companies have now joined.

In February 2008 Dell became the first PC manufacturer to join the Climate Group, a collection of governments and companies committed to addressing global warming.