You can not predict the graphics performance by just the chipset of a laptop. You need benchmarks. CNet reviews often have them as well as others.
You learn this after awhile, but I hope I can help you speed up the lessons.
Bob
Can somebody please tell me about gaming with this laptop. Is it nice with the ati radeon xpress 200m. It's new, so I havn't heard a lot about it. Can somebody fill me in? Can anyone give some games that it runs fine with, such as HL2 or Doom 3 or WoW.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic