I'm thinking of buying a gaming laptop?

I've found a lenovo y410p and a second hand alienware m17xr4 gtx680. Each of them costs me a same approximate value. So please help me decide which one i should buy. I've done some researches over the internet, and its confusing me since both have pros and cons.

When buying gaming laptop, you need to consider graphics card as it is the most important hardware component when it comes to playing video games

Here's list of best graphics cards for laptops
http://www.notebookcheck.net/...849.0.html

Thanks!

Id suggest against buying a gaming laptop.