Hello all! I am considering getting one of the older MacBook Pro 15" Laptops with the 650m graphics. I have one concern that will affect my purchase. I like to play games on the train to work (an hour long one way), and I want this laptop to be able to handle them. My question is not of the performance of the 650m, but will gaming be problem on the battery? A lot of computers with dedicated graphics lag and/or stutter while gaming on battery due to the high draw of power from the battery. Can this machine, for example, play Skyrim at a smooth FPS while gaming on battery for an hour? I understand the battery will likely last about an hour while gaming.