Facebook has selected low-power Atom processors from Intel to be at the heart of the software-defined networking switches that it plans to implement in its data centers next year. The Atom "Avoton" chip is being separately tested by the social network to serve as a serial-attached storage controller for its disk-drive arrays. Facebook also considered ARM-based processors from Calxeda and Marvell Technology Group to use in its data centers, and chose the Atom processors for their 64-bit addressing capability.

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