OLPC announced the XO 3.0 tablet yesterday, and today we had a chance to sit down with the company's CTO, Ed McNierney and Marvell's Chief Marketing Officer Tom Hayes, who gave us a tour of the new tablet. The XO 3.0 is powered by Marvell Armada PXA618 silicon, which lowers the power requirements of the tablet to a scant 2 watts. That chip, along with the custom charging circuitry developed by OLPC and Marvell means that the tablet can be charged by a hand crank at a 10:1 ratio (10 minutes of usage time for every minute spent cranking), or by the optional four watt solar panel cover at a 2:1 ratio on sunny days. Like other OLPC devices, the XO 3.
