Am4 Pinout Diagram Exclusive — ((free))

We are mapping the – the holes that receive the CPU pins.

High-speed lanes usually located near the center-top of the pin array. x4 for NVMe: Dedicated storage lanes. am4 pinout diagram exclusive

MA_DATA[63:0] and MB_DATA[63:0] : Data lines for memory channels A and B. We are mapping the – the holes that receive the CPU pins

: 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 : MA_DATA[63:0] and MB_DATA[63:0] : Data lines for memory

| Pin Region (Relative to center) | Primary Signals | Notes | |--------------------------------|----------------|-------| | | VDD (Core voltage), VSS (Ground) | ~400 pins for power delivery | | Inner ring | PCIe lanes (x16 for GPU, x4 for NVMe), USB 3.2 Gen2, SATA | Direct to CPU | | Outer ring | DDR4 memory channels (2 channels, 2 DIMMs each) | Data, address, command, clocks | | Corners | Reserved, test points, VDDIO, VDDCR_SOC | SoC/IMC power | | Edge islands | FCH (chipset) link (PCIe 3.0 x4), LPC, SPI, SMBus, Clockgen | Southbridge comms |

You can find more detailed visual maps and pin-by-pin descriptions on the following platforms: