HP xw4400 Intel® Pentium® 3.40GHz 1GB/160GB DVD/CD-RW WXP Pro Workstation. Processor family: Intel Pentium D 945, Processor clock speed: 3.4 GHz, Processor front side bus: 800 MHz. Internal memory: 1 GB, Internal memory type: DDR2, Memory slots: 4 DIMM slots. Hard drive rotational speed: 7200 RPM. Optical drive type: 48x DVD/CD-RW Combo. Networking features: Integrated Broadcom 5755 Netxtreme Gigabit PCIe LAN, optional Broadcom 5751 Netxtreme Gigabit PCIe