My computer upgrades

My computer really needs an upgrade, and my mother said she will pay for me for Christmas (and my birthday in january) a small portion of the upgrades, so I’m really excited!  I will have to save all my money for that in the coming months in order to do that.  I won’t be able to buy anything like mangas or decks for quite a while.  The only thing I really plan to buy is the expansion of Diablo 3 that I’m really looking forward to.

Right now this is pretty much what I have in mind, as for the graphic card, I just wonder whether I should take the 2 Gig one or the 4 Gig one: