1, D525 1.8GHz DDR3 1066/1333MHz; 2, Built-in 4GB RAM, 320GB HDD; 3, ... No.: CPCX1, Intel ATOM Mobile CPU D525 1.8GHz DDR3 1066/1333MHz 4GB RAM, 320GB HDD2, Standard USB 2.0 ... is OptionalCPUIntelATOM Mobile CPU 525 1.8GHzChipsetIntel NM10+ATOM 525Memory1x DDR3 1066/1333MHz 200PIN SODIMM 4GB RAM (already integrated)GraphicsIntel Graphics ... . CPCX Car PC, In Car PC, Auto PC, DDR3/4GRAM 320HDD/GPS/wifi