Looks like the 13900K is a heat pumping power hungry CPU.
Everything is going to be hot when you run it with unlimited turbo at peak load. The CPU will run at maximum power for as long as it can without throttling, which is never if your cooling solution is adequate.
That is not the same thing as saying that the CPU will run hot all the time. A 13900k will actually use substantially less power doing the same work that a 12900K was doing at its peak load:
So it's all a matter of perspective. It is fantastically efficient at doing the same work that the prior gen was doing at a much higher power level. But it has the ability to boost and maintain even higher levels of power to run less efficiently but generate substantially more performance.
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