Microsoft is set to pilot a new closed-loop data center cooling system It will ... “This design will avoid the need for more than 125 million liters of water per year per datacenter.” ...

That’s why nearly all hot ends have some sort of fan cooling. However ... and this can tax the normal cooling system. That causes clogs and the water cooling is much more efficient.

Water cooling systems appeal to people who push the envelope and build personal computers with the fastest chips, because water cooling is very efficient. They also eliminate large, noisy fans.