Acer Veriton M661, Veriton. Processor clock speed: 2.4 GHz, Processor family: Intel Core 2 Quad, Processor model: Q6600. Internal memory: 4 GB, Maximum internal memory: 8 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 500 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: Serial ATA. Discrete graphics adapter model: Radeon HD 2400 Pro. Audio system: High Definition Audio 7.1