Which Laptop For Gaming? Lenovo G500 Editions?

I have a small problem. I want to buy a gaming laptop Lenovo G500, but it has 2 editions. I want to play games like PAYDAY 2, GTA IV and Just Cause 2.
Edition 1:
Intel Core i3 @ 2.4 GHz
Radeon HD 8570 2GB
Edition 2:
Intel Core i5 @ 2.6 GHz (3.2GHz with Turbo Boost)
Radeon HD 8750 2GB