HP Compaq Elite 8300 All-in-One PC (ENERGY STAR). Processor model: Intel Core i7-3770 with Intel HD Graphics 4000 (3.40 GHz, 8 MB cache, 4 cores), Motherboard chipset: Intel Q77 Express. Memory slots: 2x SO-DIMM. Discrete graphics adapter model: Intel HD Graphics 4000. Optical drive type: Slim Tray-load SuperMulti DVD writer. Operating system provided: Windows 7 Professional 64