Am4 Pinout Diagram

Overview of AM4 Socket

• Understanding the AM4 Pinout Diagram: A Comprehensive Guide

  : 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

  Alignment: On the physical CPU, this is marked by a small golden triangle. Overview of AM4 Socket

  The AM4 socket is used for AMD Ryzen processors and other compatible CPUs. Here is the pinout diagram for the AM4 socket: Understanding the AM4 Pinout Diagram: A Comprehensive Guide

  3. Building a Custom Test Bench or Debug Card

  Enthusiasts have created AM4 debug cards that plug between the CPU and socket. Without the pinout, you wouldn’t know where to route POST code LEDs or voltage read points.

  B. DDR4 Memory Interface (2 channels, 2 DIMMs per channel on most mobos)

  Channel A: pins AH–AJ rows, columns 1–10 approx.
  Channel B: pins A–C rows, columns 32–42 approx.

  (without lead) to slide over the pin and gently straighten it, or a thin plastic card to align entire rows.

  3. Detailed Pinout Functional Groups

  A. Power Delivery (most critical)

  VDD_CORE (CPU core voltage)

  • Pins: ~150–180 pins (e.g., H3, H6, G4, G7, F4, F7, E6, E7 + many others)
  • Supplied by motherboard VRM via SVI2 telemetry.
  • SVI2 pins: AL6 (SCLK), AL7 (SDATA) – voltage regulator bus.