Greenpeace has dubbed Sony’s Vaio TZ11 is the greenest notebook in a survey published today.

Sony Ericson’s T650i mobile phone and P1i PDA also won their respective categories with Dell and HP sharing the spoils in a desktop survey.

Yannick Vicaire, who headed up the research, said no company scored full marks he urged manufacturers to calculate “the comprehensive carbon dioxide for each product. Otherwise IT won’t have any answer to climate change.”

Vicaire said Dell is clearly leading on PC energy efficiency and he pointed out Panasonic’s products have the longest lifespan, thanks to providing spare parts for seven years. “The industry should start designing with the environment in mind and not cool-and-funky in mind,” concluded Greenpeace.

In the past, Greenpeace has published rankings on how green companies are as a whole. This time, researchers looked at 37 individual, big-brand products and awarded points based on power consumption, how many toxic materials like beryllium were present, how many Rohs exemptions were used and their recycling process.

Greenpeace said its survey is only a snapshot of the 2007 market since a spate of big companies opted out from submitting products, including Acer, Apple, Asus, Microsoft and Nintendo.

The top three notebooks were (in order): Sony Vaio TZ11, Hewlett-Packard Compaq 2710p; Toshiba Portégé R500.

Joint greenest desktops were the Dell Optiplex 755 the Hewlett-Packard dc5750, with Fujitsu-Siemens' Esprimo E5720 coming third.

Sony Ericsson's T650i the greenest mobile phone, followed by the Nokia N95 and
LG Electronics' KE970

The top three PDAs were Sony Ericsson's P1i, Hewlett-Packard iPAQ 510 and Mio Technology P350.

Green IT has been a major theme of this year's Cebit