"Other vendors using Atom C2000 chips include Aaeon, HP, Infortrend, Lanner, NEC, Newisys, Netgate, Quanta, Supermicro, and ZNYX Networks. The chipset is aimed at networking devices, storage systems, and microserver workloads."
I'm guessing that may represent what OP meant (?)
https://www.amazon.com/ASRock-Rack-Mini-Motherboards-C2550D4...
https://www.google.com/search?q=ASRock+C2550D4I+failure+rate...
NMI ... going to debugger
Stopped at acpicpu_idle+0x22d: nop
ddb{0}>
I googled it and found one similar report on the OpenBSD misc mailing list from September 2016 [1]. Interestingly, the person who reported the bug was running the same Supermicro board as I was. The report didn't get anywhere other than a vague suggestion that it might be heat related. These boxes run very cool and I didn't think that was likely. I thought it might be a RAM issue and that it was probably just a coincidence that the other person had the same hardware as I, but now I'm inclined to think that both of us have experienced the issue described in TFA.Seems like I'll be looking for new firewall hardware.
[1] https://www.mail-archive.com/misc@openbsd.org/msg149348.html
http://www.intel.com/content/dam/www/public/us/en/documents/...
and search for AVR54
I'm not claiming that the chip isn't failing; I'm disappointed that the title makes a claim that the article doesn't deliver on.
Quite a few units have completely died without explanation. From the descriptions given by the users it does sound like dead cpu.