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 SL510, Intel® Core™2 Duo, 2,26 GHz, 39,6 cm (15.6"), 1366 x 768 pixels, 4 GB, 320 GB Lenovo ThinkPad SL510. Processor family: Intel® Core™2 Duo, Processor model: P7570, Processor frequency: 2,26 GHz. Display diagonal: 39,6 cm (15.6"), Display resolution: 1366 x 768 pixels. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® GMA X4500. Operating system installed: Windows 7 Home Premium. Product colour: Black. Weight: 2,56 kg https://www.techadvisor.co.uk/review/budget-laptops/lenovo-thinkpad-sl510-review-3206002/ Product Code: NSM4JUK The Lenovo ThinkPad SL510 won't surprise anyone who has used a ThinkPad before - it's an excellent laptop that's oriented entirely toward no-nonsense use. The matte black housing, the iconic nub in the middle of the keyboard, a... Overall, the ThinkPad SL510 is a solid Windows 7 machine. Its wide screen gives ample room to work without a full jump up to a monster-size model. The defining ThinkPad reliability is very much present, and its speed is admirable. True, battery life c...