I'll tell you something else... Getting it installed is SUCH a pain... 45mins for actual installation, and another 45mins after that trying to get the blasted thing working! First I have to sign up on Rockstar Social Club, then I want to put off signing up on Windows LIVE Games till later, to which the game says I HAVE to download Windows LIVE in order to play... So I duly download and install it, and lo and behold! It doesn't work! Gets as far as the yellow Rockstar logo in the intro music then says "Fatal error MMA10" or something like that. Cue much cursing and swearing, so I check Google if there's a way round this problem. It finally works but now since I don't have a Windows LIVE Games account, I can't save my game! So what do I do? No choice, register an account.
I tell you, this was easily the most difficult games installation I EVER had to do...
(The trick round the MMA10 error is to not log in to Rockstar Social Club. It means you can't play multiplayer, but single player is fine