Top 5 Energy-efficient Computers

Toshiba Portege R600

The Toshiba Portégé laptop line has earned Energy Star 4.0 compliancy and EPEAT's gold rating -- not only did it receive EPEAT's highest rating, the Portégé R600 ranks No. 1 in the gold category. Additionally, Greenpeace named the Portégé R600 the greenest laptop computer in 2009 in its second annual "Green Electronics: The Search Continues" survey.

Toshiba rates its products against an idea it calls Factor T, a mathematical formula the company created to assess a computer's consumer value against its environmental impact over its expected lifetime. High consumer value and low environmental impact equal the biggest energy efficiency.

Toshiba itself has set a company goal to double its environmental efficiency by 2010. Toshiba uses components with low-power consumption technology. Component and part suppliers that want to work with Toshiba must comply with a 22-point environmental performance survey before collaborating with the company.

Related HowStuffWorks Articles


  • "17-inch MacBook Pro: Environmental Report." Apple. 2009.
  • "Computers." Energy Star. U.S. Environmental Protection Agency.
  • "Dell Increases Global Renewable Power Sourcing To More Than 25 Percent." Dell. 2009.
  • "Dell OptiPlex 755." PC Magazine. 2008.,2817,2257975,00.asp
  • "Dell Sets New Energy-Efficiency Computing Standard to Drive Unprecedented Customer Savings." Dell. 2008.>
  • "Dell Studio Hybrid Details." Dell.
  • EPEAT.
  • "Factor T." Toshiba.
  • "Fortune 500 Challenge." U.S. Environmental Protection Agency.
  • "Green Programs." Toshiba.
  • "Greenpeace Names Toshiba Portégé R600 Greenest Notebook." Backbone Magazine. 2009.
  • Heimbuch, Jaymi. "Green Computer Smackdown: Dell Studio Hybrid Versys Advent Eco PC." Treehugger. 2008.
  • "How the companies line up." Greenpeace International.
  • "Lenovo's ThinkCentre M58p desktop PC: a leader in manageability, security and energy efficiency." Lenovo.
  • Murph, Darren. "Lenovo's ThinkCentre M58 / M58p desktops keep the green scheme alive." Engadget. 2008.
  • "The Greenest Desktop Computers of 2008." MetaEfficient Review. 2008.


How FIPEL Bulbs Work

How FIPEL Bulbs Work

FIPEL bulbs last a long time and are energy-efficient. Learn about the new FIPEL bulb technology at HowStuffWorks.