HP Z600 Workstation. Processor family: Intel Xeon Quad-Core, Processor model: Intel Xeon Quad-Core E5520, Processor front side bus: 1066 MHz. Internal memory: 2 GB, Maximum internal memory: 24 GB, Memory slots: 6 DIMM slots. Hard drive rotational speed: 7200 - 15000 RPM. Discrete graphics adapter model: No integrated Graphic Card. Optical drive type: HP SATA DVD+/-RW Drive