answer:well I would have thought it would only run up the battery faster if she were clocking the cpu for all its worth, ultimately its a laptop though, you don’t need that much power… have you checked out netbooks like the Aspire Ones and Hp Mini, Samsung etc my gf has one cost about £300–350 and you easily get 7hrs out of the battery… they run perfect spec for running 7 without any lags, will play some games, ms office no worries, even 720p video on my D250 and that’s not exactly a high spec netbook!