<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 Lenovo ThinkPad X1, Intel® Core™ i5, 2.5 GHz, 13.3", 1366 x 768 pixels, 4 GB, 320 GB Lenovo ThinkPad X1. Processor family: Intel® Core™ i5, Processor model: i5-2520M, Processor frequency: 2.5 GHz. Display diagonal: 13.3", Display resolution: 1366 x 768 pixels. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB. On-board graphics card model: Intel® HD Graphics 3000. Mobile network generation: 3G. Discrete graphics card model: Intel® HD Graphics 3000. Operating system installed: Windows 7 Professional. Weight: 3.73 lbs (1.69 kg)