What does everybody generally overclock the 1800x to? (nzxt kraken)
I got my 1800x OC to 4.0 GHz @ 1.381v. I use a Be Quiet Dark Rock pro 3 air cooler and my CPU stays nice and cool. With my case fans undervolted to 5v I get 65c on stress test load and if I bump up my case fans to 7v it drops down by around 10c. I have zero worries about my CPU overheating.
I know the silicon lotto is different to everyone so you may need to use a different voltage to reach 4GHz.