There are four G51JX models offered: Asus G51JX-3D which comes with NVIDIA’s 3D Vision technology and active shutter glasses for three-dimensional gaming, the Intel i7-720QM processor, and 6GB RAM; the Asus G51JX-X3 with the dual-core Core i5-430M and also 4GB memory; Asus G51JX-X1 with the Intel Core i7-720QM quad-core CPU and 4GB RAM; and Asus G51JX-A1 with the Intel Core i7-720QM quad-core CPU and 6GB of DDR3 memory. All of them feature the 500GB of hard disk space, Nvidia GeForce GTS360M 1GB dedicated video card, 15.6 inch full HD 1920×1080-pixel LED-backlit displays except the G51JX-3D’s 1366×768 screen, a 2MP web camera, 802.11n WiFi, Bluetooth, an 8-in-1 media card reader, four USB ports, an eSATA port, Gigabit Ethernet LAN, VGA and HDMI outputs, an ExpressCard slot, Firewire, a DVD writer and will run Windows 7 Home Premium OS.