ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR Lenovo ThinkPad Edge, Intel® Core™2 Duo, 1.3 GHz, 33.8 cm (13.3"), 1366 x 768 pixels, 3 GB, 320 GB Lenovo ThinkPad Edge. Processor family: Intel® Core™2 Duo, Processor model: SU7300, Processor frequency: 1.3 GHz. Display diagonal: 33.8 cm (13.3"), Display resolution: 1366 x 768 pixels. Internal memory: 3 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® GMA 4500MHD. Operating system installed: Windows 7 Professional. Product colour: Black. Weight: 1.64 kg