HP Compaq dc7800 Intel Core™2 Quad Processor Q6600 2G/250G DVD+/-RW WVST Bus Convertible Minitower PC. Processor clock speed: 2400 MHz, Processor model: Q6600, Processor front side bus: 1066 MHz. Internal memory: 2048 MB, Maximum internal memory: 8 GB, Memory slots: 4 DIMM. Hard drive rotational speed: 7200 RPM. Discrete graphics adapter model: Microsoft Windows XP Home, Microsoft Windows 2000 and Microsoft Windows Vista Enterprise, Maximum graphic adapter memory: 8-256 MB. Optical drive type: DVD Super Multi