I have only 1,9 GHz cpu and game runs beatifully and no lag
goodboy_BG That's only if you have it set to run on integrated graphics that it'll use up memory and it's not just laptops that can run integrated graphics, towers can run on them too. Laptops and notebooks can also have video cards but it depends on the laptop itself. I personally have a GeForce GTX 950M 2GB video card in my 15.4 inch laptop and I can run it just fine on max settings.