MSI Quartz G31. Maximum CPU clock speed supported: 1333 MHz, Processor socket: Socket 775, Compatible processor series: Core 2 Quad. Maximum internal memory: 4 GB, Memory slots: 2x SO-DIMM. Audio output channels: 2.0, Audio system: Realtek AL888. Networking features: 10/100/1000 Fast Ethernet (Realtek RTL8111B). Dimensions (WxDxH): 410 x 250 x 430 mm