HP Z1 Workstation, Z. Processor family: Intel Xeon Quad-Core, Processor clock speed: 3.5 GHz, Processor model: E3-1280. Internal memory: 8 GB, Internal memory type: DDR3, Memory slots: 4x DIMM. Hard drive capacity: 1000 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 7200 RPM. Graphic adapter: Quadro 1000M, Graphics adapter family: NVIDIA. Optical drive type: DVD-RW