HP has topped a Greenpeace ranking of 15 electronics companies including Dell and Nokia.
Greenpeace's Guide to Greener Electronics ranks the companies across three areas including Energy, Greener Products and Sustainable Operations.
The environmental group also challenges them reduce to their carbon footprint in manufacturing, in their supply chain and through to the end-of-life phase of their products and to set ambitious goals for renewable energy use.
"After many of the world's leading electronics companies rose to the challenge of phasing out the worst hazardous substances, we are now challenging them to improve their sourcing of minerals and better managing the energy use throughout the supply chain," said Greenpeace International campaigner Tom Dowdall.
"Right now, HP takes the top spot because it is scoring strongly by measuring and reducing carbon emissions from its supply chain, reducing its own emissions and advocating for strong climate legislation.
"However all companies we included in the guide have an opportunity to show more leadership in reducing their climate impact."
Dell takes the second spot, a dramatic improvement from tenth position in the previous version.
Computer manufacturer Dell scored well for having the most ambitious climate target, with plans to reduce its emissions by 40 per cent by 2020, and a strong policy on sustainable paper sourcing.
Nokia has slipped from its first spot held for the last three years to third, mainly due to weaker performance on the energy criteria.
"If it hopes to regain leadership on environmental issues, Nokia, along with many other companies in the guide, needs to demonstrate how it will reduce future emissions through energy efficiency and renewable energy," said Dowdall.
The latest version of the guide also features new criteria for the sourcing of paper, conflict minerals and product life cycle.
Greenpeace says these are based on the creation of a truly sustainable electronics industry and include a holistic set for examining key supply chain issues.
Its new energy section focuses on how companies can lead the way by reducing their own energy use and using their influence in support of clean energy legislation.
Blackberry manufacturer Research in Motion (RIM) is ranked for the first time but ranks bottom of the table and needs to improve reporting and disclosure of its environmental performance, Greenpeace said.
However RIM scores well on conflict minerals and sustainable paper policy.
The guide is part of Greenpeace’s wider campaign to persuade the IT industry to find solutions aimed to reduce global emissions, such as phasing out hazardous substances from their products, and targeting Facebook for powering datacentres with electricity sourced from coal.
See the Greenpeace Guide to Greener Electronics in full