You may wish to get NVIDIA OPTIMUS technology. Laptops with this have two graphics cards, however unlike the AMD versions with two graphics card the OPTIMUS technology can turn the high-end GPU off 100% to save on heat and noise.
I got the laptop (Lenovo) today and it does have 2 graphic cards, NVIDIA. but my second issue is that I don't know how to change my settings so that it could be at its best for games... I mean, which settings in graphic cards should I change?
here are some info about the laptop:
Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz (8 CPUs), ~2.2GHz
NVIDIA GeForce GT 555M
Intel(R) HD Graphics Family