Final Fantasy 13 install is 18.3GB for 360
The PS3 version of Final Fantasy 13 is being released on a single Blu-Ray disc, whereas the 360 version will come on 3 different DVD's. But if you're looking to cut down on load times and whatnot, you can do one of those new fancy full game installs on your 360 hard drive - you know the ones that the PS3 was notoriously known for, but have laid off on them recently.
Well, if you do decide to go that route you better have yourself some extra hard drive space because that installation will set you back 18.3GB's. Unfortunately for me, I happen to own one of those 20GB hard drives so I've never had the experience of installing a game, but it's no skin off my nose; I really have no issue with disc swaps. I mean, is it that big of a deal?