"The definition of green IT varies from vendor to vendor and the absence of unique and consistent Green IT standards had so far created a disparity in levels of green IT understanding across companies, and also diminished the value of green IT efforts to a degree," said Silber. "Fortunately, all this is changing now as business benefits of green IT are being formalized and standards being developed."

The study's respondents named IBM as the leader in Green IT mindshare, significantly ahead of HP and Dell, said Springboard.