Yeah, I didn't follow their logic either. I can only think of two legit factors: 1) Somehow the energy needed to run a chilled water system is lower than a ch

Yeah, I didn't follow their logic either. I can only think of two legit factors: 1) Somehow the energy needed to run a chilled water system is lower than a chilled air system. 2) Chilled water might practically allow the boards to run cooler, so their electrical resistance would be lower, making them more power efficient.