The userspace governor, with the cpuspeed daemon, seems to be the best of the default governors in providing a power savings without hurting performance.

userspace调控器以及cpuspeed守护进程在节约电能而不损害性能方面似乎是最好的默认调控器。

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For example, the central combined heat and power plant was probably the best move from an energy performance standpoint and yields direct cost savings over the life of the project.

比如，采用集中供热可能是从能源效益立场和整个项目生命周期角度来看所得出的最佳做法。

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In terms of power and performance, it really gives you the best output that will make your driving time more fun.

在功率和性能方面，它确实给你最好的输出，将更多的时间让你的驾驶乐趣。

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In "SmartEco" mode, the projectors automatically adjust lamp power to maximize power savings by delivering the best contrast and brightness performance using only as much light as needed.

ENGADGET: BenQ unveils two 1080p 3D projectors at CES HD

Reviewers note, alongside their fawning assessment of the world's best performance, that the HD 6990 is a massively power-hungry card (375W TDP) and one that makes quite a bit of noise while going through its herculean tasks.

ENGADGET: AMD launches Radeon HD 6990 powerhouse for $699, maintains 'world's fastest' title

The earSmart eS515 Smart Sound Processor combines the company's award-winning Advanced Voice processing technology with its first high-performance, low-power audio codec for a best in class voice, speech recognition and multimedia experience on a mobile device.

ENGADGET: Audience eS515 Smart Sound Processor brings three-mic support and selective audio capture to phones