Am4 Pinout Diagram Fixed May 2026

PGA1331

The AMD AM4 socket, also known as , features a 1,331-pin layout and is the foundation for several generations of Ryzen processors . A good pinout diagram is essential for troubleshooting broken pins or understanding power delivery and data lanes. Core Pin Categories

For actual diagram:

: Designed to support DDR4 memory and unified compatibility between high-end CPUs and lower-end APUs. Physical Layout : Pins have a diameter of approximately , roughly matching a 23-gauge needle. Functional Groups am4 pinout diagram

: Diagnosing why specific features, like one memory slot or a PCIe slot, have stopped working after a CPU reseat. PGA1331 The AMD AM4 socket, also known as

AM4 pinout diagram

Understanding the is essential for hardware enthusiasts, engineers, and anyone brave enough to attempt a bent-pin repair. What is the AM4 Pinout? AM2 : SMBDATA AM3 : SMBCLK AN6 :

• AM2: SMBDATA
• AM3: SMBCLK
• AN6: PROCHOT (thermal throttling signal from CPU to VRM)
• AN4: THERMTRIP_L (overheat shutdown)
• AJ30: TDI (JTAG)
• AK30: TDO
• AL30: TMS
• AM30: TCK

• DMI/PCIe x4 from CPU to chipset (B350, X370, X470, B450, X570 – latter uses PCIe 4.0).
• Pins: around AA, AB, AC rows, cols 1–8.
• Also includes clock (REFCLK_FCH) and reset.

AM4 Pinout Diagram Feature Preparation