{"rewrite":{"id":"r_6c1bccee3a1d93c9040553f6","clusterId":"c_1783dcaa0256a1ea5175b069","slug":"nvidia-announces-fully-liquid-cooling-system-that-runs-coolant-at-45-c","model":"deepseek-v4-flash","headline":"Nvidia Announces Fully Liquid Cooling System That Runs Coolant at 45°C","summary":"Nvidia has announced a fully liquid cooling method for AI servers that circulates coolant at 45°C. The system uses a closed-loop liquid to cool all major components, including chips and network equipment, in a fanless design. Nvidia claims the approach can reduce water usage for facility cooling by up to 100% and cut cooling energy costs, though effectiveness depends on local climate conditions.","whyItMatters":"The announcement signals a shift in data center cooling strategy for high-performance AI hardware, moving away from air cooling and toward a closed-loop liquid system that could lower both electricity and water consumption at scale.","webCardHtml":"\u003cp\u003eNvidia has detailed a fully liquid cooling system for its Rubin generation AI servers that runs coolant at 45°C, a temperature higher than a typical hot tub. The coolant, a mix of 75% water and 25% propylene glycol, flows through cold plates attached directly to processors. Nvidia says that in suitable climates, heat can be dissipated using outdoor dry coolers, reducing or eliminating the need for power-intensive chillers. The company estimates that raising chiller set temperature by 1°C can cut cooling energy costs by about 4%. Water consumption for facility cooling could drop by up to 100% compared to cooling tower methods, though the system\u0026#39;s effectiveness depends on local outside temperatures. Nvidia is also redesigning server internals to accommodate liquid cooling for components that previously relied on air, potentially allowing a 2U configuration where 6U was needed before.\u003c/p\u003e","blueskyPost":"Nvidia's 45°C liquid cooling system eliminates fans and cuts water use by up to 100%. The catch: effectiveness depends on local climate, meaning the savings are not universal.","twitterPost":"Nvidia's fanless liquid cooling runs at 45°C. Water savings hit 100% only where the climate cooperates.","threadsPost":"Nvidia's new liquid cooling system runs coolant at 45°C and drops fans entirely. The company claims up to 100% reduction in facility water use. The fine print: local climate determines how much the savings materialize.","newsletterBlurb":"Nvidia has announced a fully liquid cooling system for its Rubin generation AI servers that circulates coolant at 45°C. The company claims the approach can reduce water usage for facility cooling by up to 100% and cut cooling energy costs, though effectiveness depends on local climate conditions.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20260624-nvidia-45-degree-liquid-cooling/\",\"title\":\"NVIDIA Announces Fully Liquid Cooling System That Cools with Coolant 'Hotter Than a Bath,' Claiming Up to 100% Reduction in Electricity and Water Usage\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4186,"outputTokens":600,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1782587546,"createdAt":"2026-06-27T19:08:18.000Z","publishedAt":"2026-06-27T19:10:24.000Z","updatedAt":"2026-06-27T19:10:24.000Z"},"cluster":{"id":"c_1783dcaa0256a1ea5175b069","canonicalTitle":"NVIDIAが「お風呂よりも高温の冷却液」で冷やす完全液冷システムを発表、電力消費量と水使用量を最大100％削減できるとアピール","representativeArticleId":"a_8fa4138087240671f3dbf989","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[],\"people\":[],\"type\":\"announcement\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-06-24T03:15:00.000Z","lastSeenAt":"2026-06-24T03:15:00.000Z","updatedAt":"2026-06-27T19:10:24.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20260624-nvidia-45-degree-liquid-cooling/","title":"NVIDIAが「お風呂よりも高温の冷却液」で冷やす完全液冷システムを発表、電力消費量と水使用量を最大100％削減できるとアピール"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":[],"people":[],"type":"announcement","domain":"other","is_roundup":false},"keyFacts":["Nvidia's fully liquid cooling system for Rubin generation AI servers runs coolant at 45°C, a temperature higher than a typical hot tub.","The coolant is a mix of 75% water and 25% propylene glycol, flowing through cold plates attached directly to processors.","Nvidia estimates that raising chiller set temperature by 1°C can cut cooling energy costs by about 4%.","Water consumption for facility cooling could drop by up to 100% compared to cooling tower methods, though effectiveness depends on local climate.","The fanless design uses outdoor dry coolers in suitable climates, and server internals are redesigned to potentially fit a 2U configuration where 6U was needed before."]}