What Is SXM Socket?_
The SXM socket provides both mechanical retention and electrical connectivity for the GPU module, delivering power and supporting copper-based NVLink interconnects. It is designed to handle the thermal and power demands of high-performance GPUs, typically found in dense compute nodes. The socket uses a land-grid array (LGA) pattern, requiring precise alignment during installation to avoid pin damage.
Technical Details
The SXM socket connects the GPU to the system board via a high-density LGA interface, supporting multiple power rails and copper NVLink lanes for GPU-to-GPU communication. It is rated for high current delivery, supporting the power demands of modern GPUs (e.g., up to 700W in some generations), and includes thermal management features. The socket is keyed to prevent incorrect insertion and requires a specific installation tool or procedure per OEM spec. It is not user-serviceable in the field; replacement typically involves depot-level repair.
How Leviathan Systems Works with SXM Socket
In our field deployments, SXM sockets are pre-installed on the baseboard before we rack the system, and we verify proper GPU seating during commissioning by checking latch engagement and power-on self-test. We do not handle the socket directly, but we must ensure the GPU module is correctly aligned and secured to avoid intermittent connections.
Related service
GPU Rack Assembly & Rack-and-Stack →