HP xw4400 Intel® Core™2 Duo 2.13GHz 1GB/250GB DVD+/-RW WXP Pro Workstation. Processor family: Intel Core2 Duo E6420, Processor clock speed: 2.13 GHz, Processor front side bus: 1066 MHz. Internal memory: 1 GB, Internal memory type: DDR2-SDRAM, Memory slots: 4 DIMM slots. Hard drive rotational speed: 7200 RPM. Optical drive type: DVD±RW. Networking features: Integrated Broadcom 5755 Netxtreme Gigabit PCIe LAN, optional Broadcom 5751 Netxtreme Gigabit PCIe