how's the graphic 1GB of ATI HD4670 for Dell XPS16? Does anyone own it?

http://www1.ap.dell.com/my/en/home/noteboo...s=dhs&cs=mydhs1

I'm thinking which laptop to get.. DELL xps16 or Asus N51vf which has 1GB of Nvidia Geforce GT130M? Which one runs better? In terms of supporting games for the following 1 or 2 years at least?