I was going to purchase the new Alienware 17 that contains one NVIDIA GeForce 780 graphics card. The Alienware 18 contains two of the 780 graphic cards but for $800 more. Wouldn't I just be able to purchase a NVIDIA 765, or 770 graphics card and have someone install it for me rather than spend the extra $800, and still have two graphic cards? Im not sure if the computer allows another graphics card or not.