Once upon a time, servers had to offer nothing more than raw computing power. Everything else was a secondary consideration, including the consumption of electricity. It didn't matter if there was no need for all that computing power. The rule of thumb was always to buy a sledgehammer to crack a nut.
Alas, this has led to bloated servers chewing through energy and also requiring masses of air conditioning wherever they're housed. As such, server hardware is starting to look anachronistic as the western world transitions to using less energy.

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