Selecting Graphics Card for new Dell Laptop

[wonderskid]

Guys,

I'm gonna get a new dell laptop.. Primary use is for gaming.... The graphics card options available at dell for laptops are as belows...

ATI HD550v
ATI HD 545v
ATI HD 5450
ATI HD 5470
Nvidia GT 220 (Think, It's of no use for gaming)
Nvidia GT 310

My decision entirely depends on the GC. Help me choose. Also let me know other options....

VSR

 

[Maziar]

HD 550v performs slightly slower than HD 4670M;therefore,its much faster than all the other options.
http://www.notebookcheck.net/ATI-Mobility-Radeon-HD-550v.31270.0.html

 

[wa1]

^+1