It may be in your list, but one thing is...
You can't judge game performance by picking the chips. It's a system and you'll have to find benchmarks for your selected models.
Like some AMD 64 or Centrino with same kind of processors but some carry Nvide geforce 440 64 mb or 5200 with 64 mb versus ati 128mb 200m and some X600 or X300 which is best? too many different ATI notebooks video cards. this is for good gaming i need