HP xw9300 Opteron 280 2.40 GHz 1GB/150 GB No Graphics DVD-RW WXP Pro Workstation. Processor family: AMD Opteron 280, Processor clock speed: 2.4 GHz, Motherboard chipset: NVIDIA nForce Professional with AMD-8131 HyperTransport PCI-X tunnel. Internal memory: 1 GB, Internal memory type: DDR-SDRAM, Memory slots: 8 DIMM slots. Hard drive rotational speed: 10000 RPM. Optical drive type: DVD-RW. Audio system: Integrated AC’97/16-bit stereo full-duplex, optional SoundBlaster Audigy 2-ZS PCI