|Alienware announces X51 mini-ITX gaming PC, the Alienware X51 ($700) is the company's smallest gaming PC. The X51 is based on a mini-ITX motherboard. Prices start at US $699 and for this you get a Core i3-2120 CPU, 4GB RAM, 1TB hard drive and Nvidia GT 545 graphics card. The cost does not include a keyboard, mouse or even a monitor. Other features included Wi-Fi, HDMI, two SuperSpeed USB 3.0 ports.