ASUS G50Vt-A2 15.4-Inch Laptop (2.53 GHz Intel Core 2 Duo T9400 Processor, 4 GB RAM, 640 GB 7200 RPM Hard Drive, Nvidia 9800 GS Graphics, Vista Premium) WW only one 15-inch NB model adopt strong graphic NV9800 GS DDR3 that provides incredible gaming experiences to end users Dolby Home Theater Certificaiton and ALTEC LANSING stereo Speake plus HD ready WSXGA+ (1680 + 1050) LCD for ultimate video enjoyment Only one button click: from standard mode to Turbo or Turbo Extreme mode Focused keyboard (4-way keys at A,W,S,D keys in red color highlight, 2nd display for direct messenger or in-game messaging, Interactive LED Wireless video communication with built-in webcam and microphone ASUS exclusive "Express Gate" for instant media enjoyment in 10 seconds without booting up the notebook ASUS 360 service program with 2yr global warranty