Neither. You put a 280mm AIO in there.
View: https://imgur.com/YwqWtBb
That's the stock operations of those cpus following Intel's guidelines.
PL 1, or Power Limit 1, is the power limit for the cpu at base frequency.
PL 2 is for the cpu to reach those advertised turbo boost frequencies.
Tau is the time allowed for the cpu to run at PL2 before it's forced back down to PL 1.
Overclocking throws all of that out the window.
The 10700(K) shares many similarities with the 9900(K), albeit slightly more power efficient.
Checking the specs of the NH-12S and NH-U9S against the 9900K, I find this:
NH-U12S 158mm
- if power limits are disabled in BIOS, CPU might not be able to keep maximum...