Fujitsu Primergy RX300 S5 2x XE5520, PRIMERGY. Processor clock speed: 2.26 GHz, Processor family: Intel Xeon, Processor model: E5520. Total storage capacity: 438 GB, Hard drive size: 63.5 mm (2.5 "). Internal memory: 4 GB, Maximum internal memory: 144 GB, Memory clock speed: 1066 MHz. Networking features: 10/100 Mbit/s. Power supply: 800 W