I'm going to geek out now...
First the cards run in MHz... as in megahertz... but that's just a nitpick.
The box actually says It needs an Intel Core 2 Duo @ 2 GHz or Athlon X2 @ 2 GHz CPU and a nvidia GeForce 9600 or ATI Radeon HD 2900 graphics cards as a minimum.
Note the CPU requirements, you are not even close. The speed requirements alone is not enough, forget about architecture of the chips themselves.
Another thing to note, your graphics is integrated. What that means is it is built in to your computer. The 2.5GB memory actually uses your RAM for video memory, where the requirements indicate you should have 512 MB of video memory, as in on the graphics card, not "borrowing" from system memory. Your graphics "card" is no where near what is needed to play this game. You have "entry level" graphics. The minimum requirements state you need at least a "mid-range" if not better graphics card to play.
For the sake of comparison, here is my specs:
AMD Phenom II x6 1055T CPU oc'd to 3.5GHz
8GB of DDR3 memory @ 1666 MHz (1600 is what it's rated for but to over clock the PC it was tweaked to 1666)
ATI Radeon HD 7970 3GB
OCZ Agility 3 SSD (Helps a ton with loading time)
I get a score of 5000 to 5200. My FPS ranges from mid-30's in town, 60 FPS outdoors, 40-60 FPS in fights.
If you feel like building your own PC or need ideas for upgrade (if you're not using a laptop... or breaking the warranty if you bought it pre-built), let me point you here:
http://www.tomshardware.com/reviews/...pler,3280.html
The $500 PC should be able to run the game @ 720p in a somewhat decent manner. Don't expect maxed out graphics there.
The $1000 PC should be able to run the game smoothly as long as you don't go nuts on the settings.
The $2000 PC will enable you to max everything and be able to run the game... probably.
Not bashing you but your PC/Laptop is not meant to game. It is more of a value based media PC.