These pins supply the massive amounts of current required for the CPU cores and the System-on-Chip (SoC) components, like the integrated memory controller and GPU.
A significant portion of the pins is dedicated to dual-channel DDR4 memory communication, ensuring high-speed access to RAM. am4 pin layout
AM4 provides up to from CPU (24 on some server variants, but desktop AM4 has 16+4): These pins supply the massive amounts of current
The AM4 socket, introduced by AMD in 2016, serves as the cornerstone for Ryzen processors (Zen, Zen+, Zen 2, Zen 3) and compatible APUs (Bristol Ridge, Raven Ridge, Cezanne). Unlike Intel’s LGA (Land Grid Array), AM4 uses a µPGA (Micro Pin Grid Array) with 1331 pins arranged in a 35×35 grid (with missing positions for keying). This paper provides a comprehensive breakdown of the pinout, including power delivery, PCIe, DDR4 memory channels, I/O (USB, SATA), and critical differences between CPU and APU configurations. Unlike Intel’s LGA (Land Grid Array), AM4 uses
Q: What is the AM4 socket? A: The AM4 socket is a CPU socket designed by AMD for its Ryzen series of processors.
Below is a representative subset of the AM4 pinout for rows A and B near the corner (A1–A10). Full datasheets are confidential to AMD but reverse-engineered by community efforts.