But that is no reason to be complacent, says a KPMG report.
In this World Wide Wrap: HP has biggest share, NEC reveals green server, and WHS develops bug fix.
In this World Wide Wrap: Foxconn and HP build plant, desktop prices drop, and Ecoquiet designed for schools.
In this World Wide Wrap: Going green no longer optional, Microsoft champions green computing, and green computing is easy and very PC.
Energy efficiency and the green agenda are increasing demand for virtualisation technologies in SA, says Citrix Systems.
Desktop virtualisation takes hold in SA, says NCSolutions.
In today's technology roundup: Apple sued for 'Mighty Mouse', rural homes dominate UK broadband, Greenpeace takes on console makers, and Microsoft offers rebates to Web shoppers.
The company will further reduce the energy consumption of its products and avoid millions of tons of CO2 emissions worldwide.
The Berkshire data centre draws power from wood chips, waste paper and fibre fuel.
In this World Wide Wrap: Dell promises to save energy, OCZ releases DIY PC, and Future PC predicted.
Seven tips for greening the workplace, as environmental concerns increase in SA.
Most companies can go green with what they have, say Fujitsu Siemens and IBM.