Ranking
Nvidia, ATI & Intel all make graphics cards for laptops/notebooks. The problem is most laptops don't have a 'slot' for exchanging the graphics device.

You'd have to check with the manufacturer to see if your laptop's graphics can be changed.

<Erf> SkulFuk: gf just made a toilet sniffing joke at me
<Erf> i think
<Erf> i think i hate you