Not just CPU fans. FTFA, and the latter part of which was included in the GP's quote:

"an ideal replacement for just about every fan-and-heatsink installation in the world... For the most part, these savings would come from air conditioning and refrigeration systems..."

I know, I read that. The impression I got from the article was that these new heatsinks were going to be used on the CPUs and that somehow that would generate less heat. e.g, if Intel makes a lower power chip, a lot of savings will come from AC, even though Intel isn't making AC systems. It was not obvious to me (and I still have my doubts) that "every fan-and-heatsink" was referring to AC systems as well as CPU heatsinks.