The (PGA 1331) is one of the most successful CPU platforms in history, supporting multiple generations of Ryzen processors from 2016 through 2024. Unlike the newer AM5 socket , AM4 uses a Pin Grid Array (PGA) design, where the pins are located on the processor itself rather than the motherboard.
: Hundreds of pins labeled VSS are distributed throughout the grid to provide a return path for electrical current and reduce signal noise. High-Speed I/O : am4 pinout diagram exclusive
SATA_TX/RX : Serial ATA data lines, often shared with PCIe lanes. : VDDCR_CPU : Main core power supply for the processor. AMD AM4 socket The (PGA 1331) is one
The (also known as PGA 1331) is a OPGA (micro-Pin Grid Array) interface featuring exactly 1,331 pins . Unlike the newer LGA-based AM5, AM4 places the pins directly on the underside of the processor, making the pinout diagram a critical reference for diagnosing broken or bent pins. Exclusive Pin Map Breakdown High-Speed I/O : Power and Ground SATA_TX/RX :
Format: (Column,Row) – Signal