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Go inside the closed-loop cooling system designed for our AI infrastructure in Behind the Build Episode 4. The cooling liquid stays inside the system, circulates continuously and is reused again and again. The result is simple: our data centers use almost no water for cooling.

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Applied Digital

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When people say data centers use millions of gallons of water, they're describing an old technology. Before, water went into evaporative cooling towers. Warm water pulled heat off the AI chips, then evaporated into the air to shed it. It was effective, but it burned through fresh water continuously, which is where the headline numbers come from today around "data centers use a massive amount of water." The data centers we revealed at Build today don't work that way. The cooling loop is closed. Water is added once during construction and recirculates indefinitely between the servers and the chillers. No evaporation, no fresh-water resupply! Satya put the scale in plain terms: a full year of water use is roughly what a single restaurant uses. Keep in mind that for us, every liter and every watt is an optimization target. The economics and the environment push in the same direction!
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Fascinated by the idea becoming popular on the left rn that China’s AI boom and hyperscale AI data centers are amazing and good (bc they use closed loop cooling??), but the U.S. AI boom/data centers here are evil and bad and must be stopped at all cost.
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Fascinated by the idea becoming popular on the left rn that China’s AI boom and hyperscale AI data centers are amazing and good (bc they use closed loop cooling??), but the U.S. AI boom/data centers here are evil and bad and must be stopped at all cost.

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.Satya Nadella just put the whole "water" debate to rest. Datacenters run on a closed loop cooling system, the water usage of a datacenter for an entire year is roughly equivalent to a usage of 1 restaurant!
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Madrone (Madrone) builds cooling systems for data centers. In Texas, where most new sites are, Madrone can cool using 30% less power and water, thanks to novel dew-point cooling technology. Congrats on the launch, Akshay Trikha & Erik Meike!

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