Worth noting POWER9 reaches price points (and profit margins) EPYC server vendors can only dream of.
Sadly, you are right about onboarding. I'd love to have a POWER9 box as my desktop workstation, but I simply can't justify the price compared to a beefy Xeon (or EPYC) box. IBM would be wise to have a POWER9 that could compete with low-end Xeon servers.
And the astronomical end really only matters if you need special requirements like single system images... if you just need lots of cycles or memory bandwidth, a cluster of lower end hosts (and 40GBE nics) is a lot less pricey.
> a POWER9 that could compete with low-end Xeon servers.
The Talos II is in the vague order of magnitude for that... which is A LOT better than before it existed.
To make things a bit harder, I live in Europe and there aren't as many sources of used POWER8+ gear as there are in North America.
After that for a while my PPC test box was a dual g4 xserve but it stopped booting inexplicably.
I have talos now and am pretty happy with it, but even that still struggles to compete with epyc in terms of price/performance (though at least a comparison can be made there).
Even with things this announced it remains the case that EPYC, not power9, is the king of memory bandwidth per dollar at least at most price-points.