Lenovo IdeaCentre B550 - 57318996 - 23-Inch All-in-One Touchscreen Desktop Processor: Intel Core i3-4130 Processor (2 cores / 4 threads, 3.4GHz, 3MB cache) Operating system: Windows 8 Standard 64  English Display: 23.0" Full HD (1920 x 1080) MultiTouch LED backlight w/ 720p HD Camera; Graphics: Intel HD Graphics 4400 Memory: 4 GB PC312800 DDR3 SDRAM 1600MHz SODIMM Memory Hard Drive: 1TB, 7200RPM Serial ATA 2.5" Hard Drive; Optical Drive: DVD Recordable Serial ATA