This past year at SC24, there was a marked increase in liquid cooling companies. The term “liquid cooling” describes moving system heat through water rather than air. Moving water is much more complicated than moving ambient air but can hold much more heat by volume than air.
Air is lighter and does not spill, but it can get dirty. Anyone who has opened an air-cooled PC (or cleaned filters) knows about dust. Dusty CPU/GPU coolers are not as efficient and can lead to overheating and thermal throttling. Like air cooling, liquid cooling can get “dusty” and cause issues with HPC hardware.
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