HP TouchSmart 520-1180a Desktop PC. Processor clock speed: 2800 MHz, Processor model: Intel Core i5-3450S, L2 cache: 6 MB. Memory layout: (1 x 4 GB), Memory slots: 2x DIMM. Compatible memory cards: 6-in-1 memory card reader. Discrete graphics adapter model: AMD Radeon HD 7450A (1 GB dedicated). Audio system: Stereo Sound