The environmental group said the Sony Vaio TZ11 notebook, the Sony Ericsson T650i mobile phone and the Sony Ericsson P1i PDA came out on top in its "Searching for Greener Electronics" survey, relased at the show.
But the race for a green electronic product has not been won yet, said Greenpeace, with each of these products scoring just over half of the possible 100 points available to win in the survey.
Fourteen major electronics brands agreed to provide information for the survey, submitting information on their most environmentally friendly products, covering desktops, notebooks, mobile phones and PDAs.
In the survey, 37 products were awarded points against green design criteria, including the substitution of hazardous chemical substances, energy efficiency and recyclability.
The survey demonstrated the different steps being taken by manufacturers to improve the environmental performance of their products.
Several products showcased toxic-free innovations going beyond current regulations, such as the EU's Restriction on Hazardous Substances directive, said Greenpeace.
Others showed clear efforts to improve on energy efficiency, recyclability or upgradeability.
"Since undertaking the survey we have already witnessed the arrival of greener products in the market, such as Apple's new laptop, the MacBook Air, and Nokia's new phone, the Evolve," said Yannick Vicaire, Greenpeace international toxics campaigner.
He said, "Manufacturers still have a long way to go, but more and more are now taking the environmental impact of their products seriously."