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 T400, Intel® Core™2 Duo, 2.53 GHz, 35.8 cm (14.1"), 1280 x 800 pixels, 3 GB, 160 GB Lenovo ThinkPad T400. Processor family: Intel® Core™2 Duo, Processor model: T9400, Processor frequency: 2.53 GHz. Display diagonal: 35.8 cm (14.1"), Display resolution: 1280 x 800 pixels. Internal memory: 3 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 160 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® GMA 4500MHD. Operating system installed: Windows Vista Business. Product color: Black. Weight: 2.14 kg http://www.zdnet.co.uk/reviews/thin-and-light-laptops/2009/06/23/lenovo-thinkpad-t400-39666252/ The ThinkPad T400 is a solidly built and reasonably configurable business notebook that performs well. We like the integrated mobile broadband, but its a shame that a webcam and Bluetooth arent standard on all models. Solid build quality, Superb keyboard, Integrated mobile broadband, Good performance Some models lack Bluetooth and a webcam The ThinkPad T400 is a solidly built and reasonably configurable business notebook that performs well. We like the integrated mobile broadband, but its a shame that a webcam and Bluetooth arent standard on all models... https://www.techadvisor.co.uk/review/budget-laptops/lenovo-thinkpad-t400-review-112664/ The Lenovo ThinkPad T400 delivers long battery life and excellent software at a reasonable price for a business notebook. ThinkPads are the three-piece power suits of the laptop world, delivering sturdy hardware and high-end co... The Lenovo ThinkPad T400 is an all-purpose laptop that makes a pretty compelling package. The Thinkpad T400 gives you sturdy construction, great battery life, smart design, and some useful special features - all in all, a good deal. Nate Ralph Lowest ...