HP RP3 Retail System Model 3100. Processor family: Intel Celeron, Processor model: Intel Celeron 807UE with Intel HD Graphics (1 GHz, 1 MB cache, 1 core), Motherboard chipset: Intel HM65 Express. Memory type: DDR3 SDRAM, Memory slots: 1x SO-DIMM, Maximum internal memory: 8 GB. Graphic adapter: Integrated HD Graphics. Operating system installed: FreeDOS. Weight: 3.63 kg