Operating System Genuine Windows 7 Home Premium 64-bit, Processor and Graphics: AMD Athlon II Dual-Core Mobile Processor P960, 1.8 GHz, 2MB L2 Cache, AMD M880G Chipset, ATI Mobility Radeon HD 4250 Graphics with 256MB-1917MB dynamically allocated shared graphics memory; Memory: Configured with 4GB DDR3 1066MHz (max 8GB)  2 main memory slots, both slots occupied. Storage Drive 640GB (5400 RPM) Serial ATA hard disk drive.