firedice :
Why get such a crappy laptop? With a 500$ PC you would probably double your performance and then you could get a cheap netbook or something for mobility. I mean, if you're going to be playing games on a laptop, it's not worth it if in one year or two there isn't a single game you can play decently well.
Hilarious! I bought this ASUS K52 a year and a half ago. I can't even play Witcher 2 on it. At all. I have an i7 with a 6370M and still can't run Witcher 2 on LOW settings. It is truly, truly pathetic. So here I am, deciding how I am going to budget my own build this year because for school, work and fun, this laptop is amazing, but for gaming with the big dawgs, I am leaps and bounds behind. My lack of gaming performance should not discourage you from the AMD, this chip is great on other games (I guess Witcher 2 is designed with Nvidia in mind, not sure), but of the two you are looking at, I still firmly believe the 7670M is better than the Nvidia you are bumping it to for performance consideration.