ASUS P3-PH4. Maximum CPU clock speed supported: 3.8 MHz, Processor family: Intel, Processor socket: Socket 775. Maximum internal memory: 4 GB, Memory slots: 4x DIMM, Supported memory types: Dual DDRII 667/533. Graphic adapter: GMA 950. Audio output channels: 7.1. Networking features: Gigabit Ethernet