What Is Liquid-Cooled GPU Node?_
In a liquid-cooled GPU node, heat from processors, memory, and voltage regulators is transferred to a liquid coolant via cold plates or direct-to-chip interfaces. The warmed coolant is then pumped to a facility-level heat exchanger or radiator for dissipation. This approach allows for higher power densities and more efficient thermal management than air cooling alone.
Technical Details
The coolant loop typically uses a dielectric fluid or treated water, circulated by pumps that may be integrated into the node or located in a rack-level distribution unit. Cold plates are custom-machined to match the GPU and CPU package geometries, with thermal interface materials ensuring efficient heat transfer. Leak-detection sensors and quick-disconnect fittings are standard to enable safe servicing and hot-swap of nodes. The system must be designed to maintain proper flow rates and pressure differentials as specified by the OEM to avoid cavitation or component damage.
How Leviathan Systems Works with Liquid-Cooled GPU Node
In our field work, liquid-cooled GPU nodes are the primary compute units in NVL72 racks, where we connect them to the rack manifold and verify coolant flow and temperature sensors during commissioning. We also train site staff on proper handling of quick-disconnects and leak-response procedures.
Related service
GPU Rack Assembly & Rack-and-Stack →