I have a Xecuter 2.3b Lite chip, and a Maxtor 250GB harddrive, I just did it recently. So far I have only about 16 games. They all seem to be about 3-4 GB a piece, but some are smaller (Vice City only took up about 950MB). I also have tons of emulators and roms (this really impressed my relatives who used to play in the arcades years ago, aka space invaders etc.). Games only take about 10 minutes to put on the hard drive, and If you have a router hooked to your computer you can put all kinds of things on it, movies, pitures, and music. Got a little off topic, but you get the point.