Khoyamora, bro, my system is a Pentium Dual Core 5300 OC'ed @ 3.0 Ghz with a ATI HD 4670. i just finished playing
GTA 4 and Prototype, and for those 2 games, CPU is more important than GPU, and mine is also a 17 inch at 1280x1024. It ran GTA 4 at 25 - 30 FPS and Prototype was about 40 - 45 FPS. You need a Quad Core CPU for those 2 games, and others like them with open-worlds with cars, ...