Hey guys im kind of new to the site so i am not sure if this is in the correct thread but here is the issue. I have an alienware m17x r3 laptop and would like to upgrade the graphics card in it. i I know its possible i just don't know if i have the right card and if it would be compatible. The one i am looking at right now is an Nvidia Geforce Gtx 580m http
/ Basically my only concern is that i only have $300 dollars for all of the components required for the upgrade, btw i am upgrading from a 460m, and i dont know if i need a special bracket, thermal paste, etc. basically i have never done this before.
So if anyone could tell me if this would work and maybe give me a few tips i would really appreciate it.

So if anyone could tell me if this would work and maybe give me a few tips i would really appreciate it.