My cooler is only a corsair h150i 360 aio, nothing fancy.
And on top of that I’m not avec using thermal paste, just a thermal grizzly thermal pad lol.
If you’re hitting 100C and staying there even at 253W and 307A limit set in bios, maybe something else up with your cooling setup.
What are your idle temps?
Mine are between 30 and 37 depending how hot the room is.
Maybe also make sure that any bios auto overclocking is turned off? In asus boards it’s called ai overclock (and you can also set mce to “disable - enforce all limits”. In msi i think they have an auto overclock called “creator genie”, make sure that’s disabled too.
I mean, the only other thing is to check that your case is big enough, has enough airflow, and that you didn’t make any obvious mistakes like forgetting the remove the protective film from the aio cooling plate etc… but if its something like that, i imagine you’d have high idle temps too?
Hitting 100c in r23 is totally normal with everything on default, because by default most motherboards don’t set the power limits to reasonable values. Hitting 100C with the 253W limit might suggest an issue with your build/ cooling setup?