i only have a 55 in the laptop w/ 512 ram. my mac i have dual 80 gig and a gig and a half of ram. i filled the laptop twice since ive had it. moostly music. so i got a 15.4 gig dvd rom drive thats mac and pc compatable. and a progam david that lets my mac and pc share alike files. so i dump to the mac. i know have over 110 gigs of music on my mac. thats over 3 weeks of nonstop music. lol