How is centrino for 3d applications?

I am going to buy a laptop with 1.8GHz centrino and 512 RAM …

how is centrino going to performe… one thing I know for sure that the P4 > 3GHz (HT) will definately be better than above centrin… but considering that I have only this available how is 3d application going to perform in above specs ?

eager to know views…