The U.S. Environmental Protection Agency is revising the Energy Star specification for servers to take into account significant system design changes and help buyers make effective purchasing decisions.

Over the last few years, server makers have increasingly used coprocessors to boost computing power and given memory a bigger role in processing data. While memory has gotten more power-efficient, coprocessors can suck up a lot of energy.

The upcoming version 3.0 of the Energy Star spec for servers is aimed at helping buyers understand the power-efficiency levels of the new systems.

 The Energy Star program is already used in computers, appliances, electronics and many other products. An Energy Star label is typically placed on products that meet certain power specifications.

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