So after looking into it a bit I haven't found a way to put a limit in either software :
In MSI Afterburner, the "Temp Limit" option is greyed out (and so are "Core Voltage" and "Power Limit"). I could lower the core clock and/or memory clock but I'd rather try to find a way to make it only happen when temps get above a threshold^^
In the Intel XTU, I can't find any option pertaining to temperature
Any help will be immensly appreciated :)!!