Which computer is better for playing Star Wars the Old Republic?

Star Wars the Old Republic Specs:
AMD Athlon 64 X2 Dual-Core 4000+ or better
Intel Core 2 Duo 2.0GHz or better
Operating System:
Windows XP or later
RAM:

Windows XP: 1.5GB RAM
Windows Vista and Windows 7: 2GB RAM
Note: PCs using a built-in graphical chipset are recommended to have 2GB of RAM.

Star Wars: The Old Republic requires a video card that has a minimum of 256MB of on-board RAM as well as support for Shader 3.0 or better. Examples include:

ATI X1800 or better
nVidia 7800 or better
Intel 4100 Integrated Graphics or better
DVD-ROM drive – 8x speed or better (required for installation from physical editions only) Internet connection required to play.

Posted right from the website.

I need a gaming computer for Christmas for under 550$ and to run SWTOR.

I found 2 computers from Best Buy with sales and I just want advice if there good enough and what upgrades I would need.

http://www.bestbuy.com/site/Asus+-+Essentio+Desktop+/+I...

I really like this one but I notice that it has UMA graphics which I understand to be very bad. But otherwise, could I upgrade the graphics card and then will it be good?

http://www.bestbuy.com/site/HP+-+Pavilion+Desktop+/+AMD...

This one Im pretty sure has everything required to play and the graphics are sufficient enough I think. This is a downgrade in processing speed from 3.0 GHz to 2.1 GHz.

Which one is better? Is it better if I just upgrade the Asus's graphics card or risk the processing speed and get the Pavilion with the good graphics card (someone confirm if im correct)

Any help is much appreciated.