Not as far as I know. It would be your motherboard and chipset that would determine the RAM speeds supported. Plenty of people on the internet talking about running the 5800X3D with DDR4-3600 and above. Supposedly beyond about 3700MHz there are diminishing returns due to the memory controller architecture (I’m not an AMD person so I don’t really pretend to understand that). If Systemtreff won’t do that combination that seems to be a them issue, not a CPU issue.