You could try some ARM stuff like Pine64 or Raspberry Pi, but both would be for very light usage, and I do know what would be the practical limitations.
EDIT: You also have to take in account if that particular silicon is supported.
There are some high powered ThunderX based WORKSTATION but those are on the expensive side. But, FreeBSD it self use a ThunderX server to build the FreeBSD ARM packages.
https://www.raptorcs.com/content/TL2DS1/intro.html
At the cost of appearing ignorant...what OS is this POWER9 supposed to run, AIX?azathoth
The Talos II POWER9 hardware have no price tag yet BUT should vary from 2K to 6K+, depending on model/options.
At the cost of appearing ignorant...what OS is this POWER9 supposed to run, AIX?
Linux definitely runs on Power9. Because IBM doesn't want to be tied to one distribution, it will probably support two, for example RHEL and SUSE. In my recollection, it even runs in little-endian mode these days (it does on Power8, and I think LE has either become the default or even mandatory for Power9). I presume AIX is supported, although I've not personally seen it run, and presumably it will run BE. Don't know about the iSeries (a.k.a. "i" or AS-400) operating system; it would probably be supported, since there is still demand for higher-power iSeries machines.IBM is supporting Linux, ...