I'll be blunt. That gfx card won't be able to run any of the newer games on the high performance settings. The processor is fine and you don't really need to worry about RAM with gaming, but if you're looking at high performance from gaming, you're looking at a much more expensive GFX card. Especially on a laptop.
If you're looking for some top of the range gaming laptops, I'd advise this website:
Clevo/Sager laptops are some of the best in the business, I have one myself with a GTX 580M GFX card and can run any game out there on max settings no problem.