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 Does not contain "conflict minerals": tantalum, tin, tungsten, and gold. Y Legacy Intel® Core™ Processor Intel Core i5-3xxx Lenovo ThinkStation E31, 3.1 GHz, Intel® Core™ i5, i5-3450, 4 GB, DVD-RW, Windows 7 Professional Lenovo ThinkStation E31. Processor frequency: 3.1 GHz, Processor family: Intel® Core™ i5, Processor model: i5-3450. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Optical drive type: DVD-RW. On-board graphics card model: Intel® HD Graphics 2500. Operating system installed: Windows 7 Professional, Operating system architecture: 64-bit. Power supply: 280 W. Chassis type: Minitower. Product type: Workstation. Weight: 11.2 kg. Product colour: Black https://www.itpro.co.uk/643180/lenovo-thinkstation-e31-review Dozens of companies produce what purport to be business PCs, but only the biggest firms have the clout and ability to design bespoke systems that cater to the corporate world.Lenovo is one of the big players and its latest system, the ThinkStation E31, ai... Lenovo's system isn't particularly quiet but, aside from this, it doesn't do much wrong: plenty of application power, a decent discrete graphics card, reasonable versatility and plenty of component options. No small form-factor workstation comes cheap... https://www.alphr.com/lenovo/31997/lenovo-thinkstation-e31-review Workstations are typically large, ugly towers, but the increasing efficiency of desktop components means system builders are able to cram more than ever into small-form-factor machines. Lenovo's latest, the ThinkStation E31, is one such example. It follo... Lenovo's compact workstation is powerful and versatile - an attractive proposition at this price...