I've seen a few requests for how the pc version of the game performs. Under my experience it seems better optimized than the first game. On my dual core 2.66 laptop, nvidia 7950 and 4 gigs of ram I get about 35-40 fps. It looks better than on the xbox but I didn t put any antialiasing, dynamic shadows, blur effects and only 1 light source for movies. Otherwise pretty good performance! On my q6600 (quad core 2.4) with a gtx 280 its a constant 60 fps with all at max . Hope that helps!
As for how the game is in general. Well, all I can say : Its a Masterpiece! Took about 25 hours to finish, you can still play after the credits and you can explore a lot of the galaxy! I personally didn t like the first one, but this fixed everything I didn t like about the first like the boring planet exploration missions.
Get ready for the ride of your life! What a game!