The system reduces the total power consumption for the server system as a whole by about 40% compared to existing air cooling systems.
This dramatic reduction of power consumption allows customers to approximately double the server density in the same installation space.
Video:
https://www.youtube.com/watch?v=7mDkvgO2ncY&feature=youtu.be
Source: Fujitsu pressrelease
http://www.fujitsu.com/global/about/resources/news/press-releases/2018/0906-01.html