NVIDIA's Fully Liquid-Cooled AI Data Centers Operate at 45°C, Claiming Zero Water Use and a Historic Efficiency Leap
July 4, 2026
NVIDIA's Fully Liquid-Cooled AI Data Centers Operate at 45°C, Claiming Zero Water Use and a Historic Efficiency Leap
NVIDIA has revealed that its next-generation DSX AI factories, built to host the Rubin AI infrastructure, are operating at an ambient temperature of 45 degrees Celsius (113 degrees Fahrenheit) using 100% liquid cooling. This marks a radical departure from the traditional data center standard of 18 to 27 degrees Celsius, a range long considered optimal for equipment reliability. The shift, detailed in a blog post by Josh Parker, NVIDIA’s head of corporate sustainability, challenges the long-held industry belief that data centers must feel like walk-in freezers.
In the new design, liquid coolant enters the chip at 45 degrees Celsius, absorbs heat across the chip's surface, and exits at 55 degrees. NVIDIA asserts that processors can maintain full performance at this temperature without degradation. This represents what the company calls one of the biggest efficiency leaps in data center history. Given that every one-degree-Fahrenheit increase in operating temperature can yield up to 5% savings in energy costs, the financial implications are significant, especially as U.S. regulators push data centers to pay for grid access.
The environmental impact is equally striking. While AI data centers have drawn criticism for consuming an estimated 5 million gallons of water per day, NVIDIA claims its DSX AI factories achieve "zero water consumption." This is made possible by a dry-cooler-based design that operates as a closed-loop system with no evaporative water cooling. The technology eliminates the need for fans and cold aisles, transitioning entirely from hybrid liquid-and-air cooling to a pure liquid-cooling solution.
Beyond the data center, the innovation could influence consumer hardware. Parker noted in the blog post that "AI workloads are not getting lighter. The compute demand driving data center construction is growing faster than almost any other category of infrastructure investment." If NVIDIA’s partners, such as cooling system manufacturer Motivair, bring similar engineering to consumer products, home computers might one day adopt the 45-degree standard for CPU and GPU operation. However, Parker cautioned that the energy savings at the data center level are unlikely to translate into lower prices for NVIDIA’s AI-powered products, as demand continues to outpace supply.
Source: bgr
