As far as I'm aware, efficiency is key for datacenters. It can lower direct electricity costs, but also the cost of cooling. I've always been under the impressi

As far as I'm aware, efficiency is key for datacenters. It can lower direct electricity costs, but also the cost of cooling. I've always been under the impression that the cost of running is much more than the cost of the hardware which is why they are willing to pay so much for the best/most efficient hardware?