Gigabyte GA-K8N Ultra-9. Supported memory types: DDR400/ 333/ 266 -184pin, Maximum internal memory: 4 GB. Processor family: AMD, Processor socket: Socket 939, Processors compatible: AMD Athlon64 X2/ 64 FX/ 64. Audio output: Realtek ALC850 Audio AC"97. Dimensions (WxDxH): 305 x 244 mm, Width: 305 mm, Depth: 244 mm. Networking features: Marvell 8053 Gigabit Ethernet