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 <b>Higher Performance When You Need It Most</b> Intel® Turbo Boost Technology 2.01 accelerates processor and graphics performance by increasing the operating frequency when operating below specification limits. The maximum frequency varies depending on workload, hardware, software, and overall system configuration. 2.0 Legacy Intel® Core™ Processor Intel Core i5-2xxx DIRECTIVE (EU) 2022/2380 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 November 2022 (Part III) y Lenovo ThinkPad Edge E520, Intel® Core™ i5, 2.3 GHz, 15.6", 1366 x 768 pixels, 4 GB, 500 GB Lenovo ThinkPad Edge E520. Processor family: Intel® Core™ i5, Processor model: i5-2410M, Processor frequency: 2.3 GHz. Display diagonal: 15.6", Display resolution: 1366 x 768 pixels. Internal memory: 4 GB. Total storage capacity: 500 GB, Optical drive type: DVD-RW. On-board graphics card model: Intel® HD Graphics 3000. Operating system installed: Windows 7 Professional. Weight: 5.29 lbs (2.4 kg) https://www.expertreviews.co.uk/laptops/51553/lenovo-thinkpad-e520-review Business laptops don't usually fall into the budget end of the price spectrum, but the Lenovo ThinkPad E520 costs just over £500 and has a fairly decent set of components, including an Intel Core i3 processor, a 500GB hard disk and Windows 7 Profession... The E520's relatively low weight and long battery life make it ideal for travellers, but its dull screen and lack of 3D power means that the E520's all work and no play ... https://www.expertreviews.co.uk/laptops/51399/lenovo-thinkpad-edge-e520-review Lenovo’s ThinkPad Edge range of mid-range laptops might mainly target business customers, but that’s no reason to write them off – the good-value E520 combines the power of Intel’s Core i5 processor and a discrete 3D graphics chipset. Like other Think... A great all-round laptop that works for both home and business – if you can look beyond the average screen, there’s plenty here for your money ... https://www.techradar.com/reviews/pc-mac/laptops-portable-pcs/laptops-and-netbooks/lenovo-thinkpad-edge-e520-996210/review Lenovo's ThinkPad range is traditionally aimed at business users, but has recently taken a more consumer-friendly turn, with less imposing builds and price tags. The ThinkPad Edge E520 is one of the more powerful laptops in the range and can keep you e... Good office and graphics performance, Battery life, Usability, Features Ctrl and Fn keys swapped