The AMD Socket AM4 (PGA 1331) uses a Pin Grid Array layout with 1,331 pins. Unlike modern LGA sockets where pins are on the motherboard, AM4 pins are located directly on the underside of the CPU. Key Features of the AM4 Layout Total Pins: 1,331 contacts.
One of AM4’s legacies is its long-term compatibility, but the physical pin layout remained identical across all generations. That said, the electrical definition changed slightly: am4 pin layout
Note: Coordinates vary slightly between AMD’s preliminary and final datasheets. Always refer to AMD’s official “Socket AM4 Pinout Package” for engineering-level work. The AMD Socket AM4 (PGA 1331) uses a
of the specific power and data pin groups, or are you looking for repair advice for a bent pin? which place pins on the motherboard
If you force the CPU in backward: You will instantly bend dozens of pins. Because the PGA socket is fragile, applying pressure with the CPU rotated 90 or 180 degrees pushes pins into holes that do not align, crushing them.
For processors like the Ryzen 5700G, specialized pins output video signals directly from the chip. Can You Run with Missing Pins? The short answer:
The AM4 socket uses a square physical package measuring roughly 40mm x 40mm. Unlike Intel’s LGA (Land Grid Array) sockets, which place pins on the motherboard, AM4 follows a PGA (Pin Grid Array) design where the pins are located on the underside of the processor. Key Specifications Pin Count: 1,331 pins in a 1.14mm pitch grid. Memory Architecture: Dual-channel DDR4.