Lenovo Essential H515, 1.5 GHz, AMD A4, 4 GB, 500 GB, DVD±RW, Windows 8.1 Lenovo Essential H515. Processor frequency: 1.5 GHz, Processor family: AMD A4, Processor model: A4-5000. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1600 MHz. Total storage capacity: 500 GB, Storage media: HDD, Optical drive type: DVD±RW. On-board graphics card model: AMD Radeon HD 8330. Operating system installed: Windows 8.1, Operating system architecture: 64-bit. Chassis type: Tower. Product type: PC. Product color: Black