Diagram | Am4 Pinout

1,331-pin PGA (Pin Grid Array)

The AMD AM4 socket is a interface that supported Ryzen processors for over half a decade. Understanding its pinout diagram is essential for enthusiasts troubleshooting hardware failures, such as a dead memory channel or a bent pin that prevents booting. Key Sections of the AM4 Pinout

20 PCIe 3.0/4.0 lanes

AM4 CPU provides (Ryzen 3000/5000 = PCIe 4.0, older = 3.0): am4 pinout diagram

Note that this is not a complete and detailed pinout diagram, but rather a simplified representation of the AM4 socket pinout. 1,331-pin PGA (Pin Grid Array) The AMD AM4

• VDDG (VDD for GPU): pins A1, A3, A5, A7, A9, A11, A13, A15, B1, B3, B5, B7, B9, B11, B13, B15
• VDD (VDD for CPU): pins C1, C3, C5, C7, C9, C11, C13, C15, D1, D3, D5, D7, D9, D11, D13, D15
• VSS (Ground): pins E1, E3, E5, E7, E9, E11, E13, E15, F1, F3, F5, F7, F9, F11, F13, F15

A01 VDD A02 VDD A03 GND A04 PCIe_TX0 ... B01 GND B02 VDD B03 VDD B04 PCIe_RX0 ... ... VDDG (VDD for GPU): pins A1, A3, A5,

AM5 socket

AMD moved away from the AM4 pinout with the introduction of the Ryzen 7000 series. The new uses 1,718 pads (LGA 1718) on the CPU instead of pins. While this makes the CPU harder to break, it makes the motherboard socket much more fragile.