Asrock P43Twins1600. Supported memory types: DDR2 1066/800/667, Maximum internal memory: 8 GB. Processor family: Intel, Processor socket: Socket 775, Processors compatible: Intel® Core™ 2 Extreme / Core™ 2 Quad / Core™ 2 Duo / Pentium® Dual Core / Celeron®. Audio system: ALC888, Audio output channels: 7.1. Width: 305 mm, Depth: 244 mm. LAN controller: Realtek RTL8111B/RTL8111C