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tech 25 June 2026

45°C Cooling Design: Cutting Data Center Water Use to Near Zero

Discover how NVIDIA's new 45°C cooling design revolutionizes data center energy efficiency and cuts water consumption to nearly zero.

Article inspired by the original source
45°C cooling design cuts data center water use to near zero ↗ blogs.nvidia.com

Introduction

Data centers are the backbone of the digital age, yet their environmental footprint has always been a significant concern. Traditionally, cooling these infrastructures consumes vast amounts of energy and water. NVIDIA is revolutionizing this paradigm with a new 45°C cooling approach that promises to cut water consumption to near zero. Let's dive into the details of this innovation.

Why is cooling crucial?

Cooling accounts for up to 40% of a data center's total energy consumption. With increasing compute density, this proportion could rise. Historically, air-cooling systems require large volumes of water to function efficiently, which poses a major sustainability issue.

The 45°C Cooling Breakthrough

NVIDIA has introduced a liquid cooling system capable of operating at 45°C, hotter than typical hot tub water. This innovation, integrated into NVIDIA's Rubin generation AI servers, employs a fully liquid-cooled system, eliminating the need for fans in the system.

How it works

The system uses a closed-loop with dry coolers. This means the water does not evaporate, practically eliminating water consumption. In favorable climates, this allows for chiller-less operation, reducing water consumption from millions of gallons per megawatt per year to almost zero.

Economic and Ecological Impact

Adopting this technology can lead to significant energy savings. For instance, a 50-megawatt hyperscale data center can save over $4 million annually in energy and water costs. Moreover, each degree increase in cooling plant temperatures can cut energy costs by 4%.

Use Cases and Examples

Tech giants worldwide are beginning to adopt this model. For example, a data center in Finland already uses a similar system, leveraging the cold climate to maximize energy efficiency.

Conclusion

NVIDIA's 45°C cooling technology is not just a technological advancement; it is a significant step towards a more sustainable future for the data center industry. By reducing water consumption and increasing energy efficiency, it offers a viable solution to current environmental challenges.

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