TechSpot published Alienware 13 + Graphics Amplifier: Portability and Desktop Power
A quote from the article:
One of the main issues with gaming laptops is the limitations of the form factor. This is why the Alienware 13 is such an interesting laptop; paired an optional accessory called the Graphics Amplifier that houses a standard desktop GPU and power supply, you get essentially the same power as a typical gaming desktop while docked at home, and a level of upgradeability otherwise not possible with another laptop.Alienware 13 Review + Graphics Amplifier: Portability and Desktop Power @ Techspot