Hello!

System hardware:
Xeon E5-2673 v3 (x2), 128GB RAM

I have a Dell Poweredge 730xD (2cpu). In the past 2 months, we had 3 "crashes" after ~2.5 years error-free operation. From iDrac we got these errors.

Warning	The Intel Management Engine has reported an internal system error.	PWR2262
Error	CPU 1 machine check error detected.	CPU0704
Error	One or more Machine Check errors occurred in the previous boot.	UEFI0078

Before the crash, the logs show the same order. The whole "pre-crash" event occurs in  60sec

1. The Intel Management Engine has reported an internal system error. - PWR2262 (warning)
2. The Intel Management Engine has reported an internal system error. - PWR2262 (warning)
3. System CPU resetting -SYS1003
4. Requested system hardreset RAC0703
5. System CPU resetting - SYS1003
6. A problem was detected related to the previous server boot. - UEFI0078 (error)
7. CPU 1 machine check error detected. CPU0704 (error)
8. An OEM diagnostic event occurred CPU9000 (about 10 times in 1 sec)
9. CPU 1 machine check error detected. CPU0704 (error)
10. An OEM diagnostic event occurred CPU9000 (about 10 times in 1 sec)
11. C: boot completed OSE1002 

I found a lot of forum posts about this CPU family on both Intel and Dell forums. It seems to me it's a general problem with these CPUs. 

iDrac does not show any hardware-related problem, every component has a green symbol. 
Edit: Windows only created one BSDO file it shows a ntsokrnl.exe crashed. (So it can be anything, ntskrnl handles every hardware and near hardware things)

Things I did until this post:

• Firmware, driver update. (exception: Perc controller)
• Windows server update (server 2016)

Now I will shut down the server and re-paste the CPU and swapping them.

What more can we do? Is there any bug report/know issue about this CPU I did not find? 

Thanks for helping,
F