Am4 Pinout Diagram May 2026

Corner (Triangle) = Pin A1

Note: AMD has never released an official public pinout to OEMs, but the enthusiast community, including engineers from der8auer and Gamers Nexus, have reverse-engineered near-perfect diagrams based on AM4 technical reference manuals.

AMD does not publicly release the full 1331-pin matrix. However, board partners (ASUS, Gigabyte, MSI) get it under NDA. Leaked/community-reversed pinouts exist from:

The most complete community reference is from AMD’s BKDG (BIOS and Kernel Developer Guide) for each family – but only under NDA. am4 pinout diagram

For hobbyists, socket pin diagrams from ElmorLabs, Buildzoid (Actually Hardcore Overclocking), and German overclocking forums are the most reliable.

Unlike older architectures, AM4 CPUs are System-on-Chips (SoC). The pinout includes pins for the "Infinity Fabric," AMD’s interconnect technology that links the CPU cores to the I/O die and memory. The speed of the memory (controlled by the memory pins) is directly tied to the speed of this fabric. Corner (Triangle) = Pin A1

On the diagram, you will see specific markers for Pin 1 (often marked by a missing pad or a distinct corner pattern).

The AM4 socket uses a Pin Grid Array (PGA) design. Unlike Intel’s LGA (Land Grid Array) where the pins are on the socket, AM4 places the pins on the motherboard socket. The pinout diagram is typically viewed from a Top-Down perspective (looking at the socket on the motherboard before the CPU is installed). Note: AMD has never released an official public

The pins are arranged in a roughly rectangular grid, bordered by a notched corner (the alignment key) to ensure the CPU is oriented correctly.