Lenovo K330B 77471GU Desktop (Black) Intel Core i7 - 2600 Processor, 3.4 GHz, 4 cores, 8 threads, 8mb of cache 8GB DDR3 Memory, 1.5TB 7200 RPM Hard Drive ATI Radeon HD 6450 1 GB DX11 Power Control Switch with halo lighting effect - choose between performance, dynamic and silent running modes. Convenient top-mounted power button, Tool Free chassis design for easy upgrade and maintenance