Which Should I Get?

I am in a possition that if i make a desicion later in life i think it would just hit me.

Which one should i get:

a nice PS3 80GB with CoD Modern Warfare 2 650$(im buying 2 controllers 6 axis, router for network, a headset, and maybe a cooler if it doesnt comewith one)(im not sure about the price i think its a bit more)

or

an exciting FX CPU with Microsoft Office $1240(im also going to upgrade it with an NVidia GeForce graphics card(depends on what the CPU can take))

i calculated it and it comes out as 740-760 dollars depending on which router i get.