Gateway ZX4971-UB10P All-in-One Celeron Dual-Core G530 2.4GHz 4GB 500GB DVD&plusmn;RW 21.5" Touch Windows 7 Home Premium w/Webcam & HDMI Gateway ZX4971-UB10P Celeron Dual-Core G530 2.4 GHz 21.5-inch Touchscreen All-in-One System General Features: All-in-One desktop design Microsoft Windows 7 Home Premium 64-bit pre-installed w/CoA reinstallation partition Intel Celeron Dual-Core G530 2.4 GHz processor 2 MB Intel Smart Cache, 5 GT/s DMI 4 GB DDR3 RAM (supports up to 8 GB)