Lenovo IdeaCentre H515 Desktop (57323775) (Discontinued by Manufacturer) Processor: AMD APU A4-5000 (4 cores, 1.50GHz, 2MB L2 cache) Operating system: Windows 8.1 Standard 64 - English Graphics: AMD Radeon HD 8330 Graphics Memory: 4 GB PC3-12800 DDR3 SDRAM 1600MHz UDIMM Memory Optical Drive: DVD Recordable Serial ATA 1 TB 7200 rpm Hard Drive