Nvidia · NVIDIA Blog
Hotter Than a Hot Tub: The 45°C Breakthrough to Cool AI’s Biggest Machines
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Hot tubs sit at about 38 to 40 degrees Celsius, warm enough that most people can only soak for about 15 minutes.
Key facts
- Hot tubs sit at about 38 to 40 degrees Celsius, warm enough that most people can only soak for about 15 minutes
- NVIDIA’s newest AI servers can run their cooling liquid even hotter, up to 45 degrees Celsius, or 113 degrees Fahrenheit
- The NVIDIA DSX reference design for AI factories has zero water consumption up to a 100% reduction in water use
- Coolant, 75% water and 25% propylene glycol, flows through cold plates that sit directly on processors, pulling heat out at the source
Summary
The Rubin generation of NVIDIA AI infrastructure is the world’s first to achieve 100% liquid cooling, every chip, every networking component, cooled entirely by liquid in a closed loop with no fans anywhere in the system. Although each generation offers significantly more computing power for each watt, full liquid-cooled AI compute infrastructure enables data centers to dramatically reduce cooling energy consumption, making a meaningful difference to overall data center energy use at hyperscale. “The NVIDIA DSX reference design for AI factories has zero water consumption up to a 100% reduction in water use. The reason: traditional air-cooled data centers depend on large volumes of cooled air to remove heat from IT equipment, often requiring energy-intensive cooling infrastructure during hot weather.