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 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 HP t820 Flexible, 2.9 GHz, Intel® Core™ i5, 4th gen Intel® Core™ i5, i5-4570S, 6 MB, 4 GB HP t820 Flexible. Processor frequency: 2.9 GHz, Processor family: Intel® Core™ i5, Processor generation: 4th gen Intel® Core™ i5. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1600 MHz. Total storage capacity: 16 GB, Storage media: SSD, Storage drive interface: mSATA. On-board graphics card model: Intel® HD Graphics 4600. Audio system: HD