That's the best you're going to find.
To Customize it, go here. http://shop.lenovo.com/us/laptops/ideapad/y-series/y480
It's got a 3rd gen core i7 processor, ideal for gaming. 8GB RAM, more than enough. And a NVIDIA GeForce GT 650M, which is an entry level class 1 GPU, which means it'll play all your games on medium, and some games on high, without any issues.
These are without doubt the best specs available in your price range.