Pinout | Am4

The 1,331 pins are organized into specific groups that handle power delivery, data transmission, and system management.

| Signal | Description | |--------|-------------| | DQ[0..63] | Data lines | | DQS[0..7]_P/N | Data strobe (differential) | | CA[0..9] | Command/address | | CS#[0..3] | Chip select | | CKE[0..1] | Clock enable | | VDD_MEM | DRAM power (1.2V) | | VPP | DRAM programming voltage (2.5V) | am4 pinout

Corner with triangle marker (missing pin) is key. The 1,331 pins are organized into specific groups

The AM5 socket (Ryzen 7000+) uses an LGA design and has a completely different pinout. The following applies only to AM4 (PGA – Pin Grid Array). am4 pinout

AM4 supports dual-channel DDR4 with up to 2 DIMMs per channel.