Asus X52NXR3 / X52N-XR3 / X52N-XR3 15.6, AMD Phenom II Quad-Core P960, 4GB RAM DDR3, 500GB Hard Drive 1.8 GHz AMD Phenom II Quad-Core Mobile Processor P960 4GB (2GB X 2) DDR3 Memory / 500 GB (5400RPM) Hard Drive Super Multi DVD Drive / 5.8 Lbs. Windows 7 Home Premium (64 Bit)