Nvidia announced on Monday that its newest AI servers will run entirely on liquid cooling, eliminating air-cooling fans and their associated water demand. The system uses a liquid coolant made of water and propylene glycol that circulates in a closed loop, continuously recirculating the same coolant instead of drawing in new water from external sources. "We have eliminated massive amounts of power usage and pretty much all water usage," said Ali Heydari, Nvidia's director of data centre cooling and infrastructure. The system remains functional at up to 45 degrees Celsius, or 113 degrees Fahrenheit, compared to the industry standard cooling temperature of 30 degrees Celsius. Andrew Chien, a professor of computer science at the University of Chicago and director of the CERES Center for Unstoppable Computing, told Fortune that pushing the liquid input temperature to 45°C is "super important" because it allows cooling and exhausting heat to the outside environment without running HVAC units or air conditioners. The United Nations warned earlier this month that AI-related water consumption could equal the annual needs of 1.3 billion people by the end of the decade.