What do you mean by overheating?
You can check the VRM MOS temps in HWInfo64 - even the most power-crazy boards pushing insane wattage into i9's don't get higher than like 60 or maybe 70, so I highly doubt your mobo will get damaged from whatever you're doing (generally, the auto's or even maxes in bios are not, generally, capable of damaging your mobo over a short term).
Modern motherboard above a certain quality can put up with a lot of abuse before things go wrong, ignore lemons and situations like that.