Ok so I have the late 2009 2.26ghz unibody macbook. i was wondering if the newer 2.4ghz uses the same processor just overclocked, or a different one? also do you think there would be much of a difference between the two as far as performance? and my second question. I plan on buying a new battery somewhat soon. will i be able to buy the newer macbook battery that has 10hrs of life for my macbook that says it has 7hrs of life? if so where can i buy a genuine battery from. and does it void warranty if i or anyone else besides apple changes the battery? i have applecare so i dont want to void that. any answers are greatly appreciated.