<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 4th Generation Intel® Core™ processors are based on Intel® microarchitecture formerly known as Haswell, manufactured on 22 nm process technology with 3D tri-gate transistors. This platform provides excellent CPU, graphics, media performance, flexibility, and enhanced security over the 3rd generation Intel® Core™ processors, making it ideal for a broad range of intelligent systems. Intel Core i5-4xxx Lenovo ThinkCentre E73z, 50.8 cm (20"), HD+, Intel® Core™ i5, 4 GB, 1 TB, Windows 7 Professional Lenovo ThinkCentre E73z. Product type: All-in-One PC. Display diagonal: 50.8 cm (20"), HD type: HD+, Display resolution: 1600 x 900 pixels, Screen shape: Flat. Processor family: Intel® Core™ i5, Processor frequency: 2.9 GHz. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 1 TB, Storage media: HDD. Built-in camera. Optical drive type: DVD±RW. Operating system installed: Windows 7 Professional. Product colour: Black