I never got into that stuff. I just got into case modding, and failed. So, I stopped.
Was 50 games an exagerration? I know you can fit a lot on 200, but XBOX games are a few gigs...Swee set up though.
I've got a xecuter chip as well with a 250gb hd. It depends on the games some games are only around a gig. the biggest game I've got on mine is only about 2.5 gigs I think. You can also get emulators so you can play ps2 games or just about any nintendo or sega game as well.
Don't ask me where to find them though, I've looked around a little bit but haven't had any luck so far.