Lenovo Think Centre M82 2756N1G Small Desktop PC Core i 3 (3220) 3.3 G Hz 4GB (1x 4GB) 500GB DVD±RW LAN Windows 7 Pro 64-bit/ Windows 8 Pro RDVD (Integrated Graphics) Lenovo Think Centre M82 Small Desktop Intel Core i 3 (3220) 3.3 G Hz Dual Core Processor with 3MB L3 Cache 4GB (1x 4GB) 1600 M Hz DDR3 memory 500GB (7200RPM) Hard Drive DVD Recordable (Dual Layer) Microsoft Windows 7 Professional 64-bit (Comes with a licence & media for Windows 8 Pro software) Integrated Intel HD graphics Integrated gigabit ethernet Three years, on-site warranty