Engadget reports the upcoming OLPC XO 1.75 with Marvell's 1GHz Armada chip will use just 2W. The system is expected to reach students sometime in 2012.
As a result, the entire system now only pulls two watts of power, and thus the battery can be given some more juice with a few turns of that neon green crank. It's not meant to recharge the laptop completely -- actually, according to OLPC's CTO Edward McNierney, it would take about two hours of cranking to top off the system. Other than the fresh ARM CPU, the new model is identical to the previous versions -- it has an outdoor readable PixelQi display, Flash storage, a rubber keyboard, and runs Sugar OS.