Lenovo C540 23 Inch All in One AIO Touchscreen Intel Core i3 / 4GB RAM / 1TB HDD / Full HD FHD Display (1920 x 1080) Intel Core i3 3240 (3.40GHz) 4GB DDR3 RAM, 1TB 7200 rpm HDD, Intel HD Graphics 2500 23 inch Touchscreen Full HD FHD Display with Resolution 1920 x 1080p Integrated DVD reader/writer, USB 2.0 ports and 6-in-1 card reader Windows 8 free upgrade to Windows 8.1