{"id":513505,"date":"2026-06-27T09:17:09","date_gmt":"2026-06-27T09:17:09","guid":{"rendered":"https:\/\/www.newsbeep.com\/il\/513505\/"},"modified":"2026-06-27T09:17:09","modified_gmt":"2026-06-27T09:17:09","slug":"nvidias-new-ai-servers-run-on-hotub-coolant-and-dont-need-evaporators","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/il\/513505\/","title":{"rendered":"NVIDIA\u2019s New AI Servers Run On Hotub Coolant And Don\u2019t Need Evaporators"},"content":{"rendered":"

When people start ranting about AI, you can be sure a few things are going to come up during the two-minutes hate: job loss, higher power bills, the neverending tide of low-effort slop, and wasting precious freshwater. Well, NVIDIA wants to take away that last one, beacause the all-water cooled Ruben architecture won\u2019t need any evaporative cooling<\/a>\u2014 coolant can stay in a closed loop, and never needs to be cooled below 45 C, or 113 F.<\/p>\n

This sort of coolant loop should be familiar to anyone who has ever built a water-cooled PC or PlayStation<\/a>: there\u2019s a glycol-water mix, water blocks, and a radiator to reject heat to the environment. NVIDIA doesn\u2019t mention if their new servers come with RGB lighting, but we\u2019d like to imagine it\u2019s an option. The big difference \u2014 aside from the rainbow LEDs\u2013 between a Ruben server and your old gaming rig is that in these racks, everything is on a waterblock. If there\u2019s a chip on the motherboard generating heat, it\u2019s getting rid of it into the same cooling water. Cooling water, that we have to emphasize, needs only be cooler than the chips themselves: in this case, they\u2019re talking 45 C on the cold side, and 55 C headed out of the racks. (That\u2019s 113 F to 131 F for all the bald eagles reading this.)<\/p>\n

Given the required temperature drop is so modest, there\u2019s no need for the evaporative chillers that have given AI data centers such a bad name in water conservation circles. Just like in a water-cooled PC, ambient-temperature air running over dry heat exchangers\u2013 also known as big honkin\u2019 radiators\u2013is able to handle the cooling, so no water is lost. Since everything is on waterblocks, there\u2019s no need for cooling air, either, and the server farms need only be air conditioned to the degree required to make them comfortable to work in.<\/p>\n

If you think NVIDIA is making this change because they suddenly care about water conservation, think again. The press release makes their motivations very clear: cooling costs money, and running this hot saves a lot of it. We\u2019re talking four mil US a year for a 50 MW hyperscaler. One might suspect that this sort of thermal regime could limit the lifetime of the hard-working NPUs, but since they\u2019ll be obsolete in a few years anyway, that\u2019s not likely a big concern, especially not for NVIDIA.<\/p>\n

We\u2019ve actually seen hotter fluids used to cool computers before\u2013 coffee, for one<\/a>. Water cooling also isn\u2019t new in the data center world; we took a look at it a few years back<\/a>. Things are clearly heating up now, though.<\/p>\n","protected":false},"excerpt":{"rendered":"When people start ranting about AI, you can be sure a few things are going to come up…\n","protected":false},"author":2,"featured_media":513506,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[345,343,344,85,46,125],"class_list":["post-513505","post","type-post","status-publish","format-standard","has-post-thumbnail","category-artificial-intelligence","tag-ai","tag-artificial-intelligence","tag-artificialintelligence","tag-il","tag-israel","tag-technology"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/513505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/comments?post=513505"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/513505\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media\/513506"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media?parent=513505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/categories?post=513505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/tags?post=513505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}