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Sleep Talking PCs Save Energy and Money

Computer science Ph.D. Yuvraj Agarwal invented 'sleep talking' and designed a number of energy saving prototypes for PCs.
Computer science Ph.D. Yuvraj Agarwal invented "sleep talking"and designed a number of energy saving prototypes for PCs (below).
energy saving prototypes for PCs

"Sleep talking" is an energy and money saving mode for personal computers invented by computer scientists at the Jacobs School and Microsoft Research. Normally PCs alternate between awake mode - where they consume significant power even when idle - and sleep mode - where they save substantial power but are essentially unavailable and unresponsive to network traffic. "Sleep talking" offers a tantalizing mix of the two traditional modes.

"Many people keep their PCs in awake mode just because they want to stay connected to an internal network or the Internet," said Yuvraj Agarwal, the inventor of "sleep talking" who recently earned his computer science Ph.D. from the Jacobs School. "I realized that most of the tasks that people keep their computers on for - like ensuring remote access, file sharing and downloading, and maintaining presence on instant messaging and voice-over-IP networks - can be achieved at much lower power-use levels than regular awake mode."

Agarwal presented his plug-and-play hardware prototype for personal computers in April, and the story continues to percolate across the Web. A Technology Review story in August even triggered a second appearance on Slashdot. Agarwal recently accepted a research scientist position at UC San Diego in the lab of Rajesh Gupta, his Ph.D. advisor. Agarwal aims to implement his sleep talking technology across networks that scale to enterprises and datacenters.

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