Lenovo IdeaPad Z585 261728U 15.6 Notebook AMD A8-4500M 1.90 GHz 6GB DDR3 750GB HDD DVDRW AMD Radeon HD 7640G Bluetooth Windows 7 Home Premium 64-bit Quad Core A8-4500M(1.90GHz) 6GB Memory DDR3 1600 750GB HDD 5400rpm DVDR/RW AMD Radeon HD 7640G 15.6 HD LED backlit display