Simply type in the product name of the item you are considering and use an online product comparison tool like Google Product Search, NexTag.com or BizRate.com.
EPEAT, which stands for Electronic Product Environmental Assessment Tool, is a voluntary environmental rating that helps consumers identify greener computers and other electronic equipment.
It involves from the moment they hear about the product (marketing), to the experience of purchasing (sales), to using the tool(product design) and finally to service.