i read somewhere that a Macbook's memory is not that large. it has something to do with the battery saying the larger the memory, the less battery life?? if i buy a macbook, im not gonna use it portably, i already have an ipad (& an ipod) for that. the HP laptop im using now had 572 GB. amd im using about 400 GB now. isnt there a Macbook that has that kind of memory?