Aimed at industrial applications where complete silence may be desired, the mini PC encases a Fujitsu mini-STX motherboard in a huge heat sink with configurations up to the octa-core Core i9-9900T.
https://www.notebookcheck.net/The-Fujitsu-Impact-mini-PC-runs-on-a-Core-i9-CPU-with-no-fans-whatsoever.451029.0.html
It has nothing to do with requiring silent operation, industrial applications for fanless designs are about stopping dust from siezing fans and killing components which leads to machine downtime