HP TouchSmart 520-1020a Desktop PC. Processor clock speed: 2700 MHz, Processor model: AMD A4-3400, L2 cache: 1 MB. Memory layout: (1 x 4 GB), Memory slots: 2x SO-DIMM. Compatible memory cards: 6-in-1 memory card reader. Discrete graphics adapter model: AMD Radeon HD 6450A (1 GB dedicated). Audio system: Stereo Sound