NVIDIA’s New AI Servers Run on Hotub Coolant and Don’t Need Evaporators

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’t need any evaporative cooling — coolant can stay in a closed loop, and never needs to be cooled below 45 C, or 113 F. This sort of coolant loop should be familiar to anyone who ha