According to Roman Hartung, usually known as der8auer, most, if not all motherboards, including some high-end boards like Asus X299 Prime, Gigabyte Aorus X299 Gaming 3, some ASRock, MSI, or pretty much any motherboard that comes with a single 8-pin EPS power connector (even the X299 Prime which uses 8+4-pin) can't be recommended for overclocking since temperatures on the VRM part reach well over 100 degrees Celsius and some even heat up the 8-pin EPS PSU cable to dangerous levels.

Der8auer continues saying that motherboard manufacturers can't be solely blamed since Intel pulled the launch from August to June, putting a lot of pressure on motherboard manufacturers, so it doesn't come as a surprise that there are certain design flaws.

On its Facebook page, der8auer suggest that you postpone your upgrade plans, at least until motherboard makers put their things in order and start looking at function rather than design, RGB lights, gaming aesthetics and fancy VRM heatsinks.