Lenovo ThinkCentre Edge. Processor clock speed: 2.8 GHz, Processor family: Intel Core i7, Processor model: i7-2600S. Internal memory: 4 GB, Maximum internal memory: 8 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 500 GB, Storage media type: HDD, Storage drive interface: Serial ATA. Optical drive type: DVD-RW, Disc types supported: CD, DVD. Display diagonal: 546.1 mm (21.5 "), Aspect ratio: 16:9