X670 AM5 Maximum 128GB DDR5 ATX Retail Motherboard. Specifications CPU Socket: AM5. RAM Memory Technology: DDR5. Maximum Memory Supported: 128 GB. Memory Clock Speed: 5200 GHz. Graphics Card Interface: PCI Express 4.0. Wireless Type: 802.11a/b/g/n/ac, 802.11ax. Number of HDMI Ports: 1.