The Intel Core i9-12900K will be introduced on November 4th, along with the i7-12700K and i5-12600K. The base processing power and the maximum turbo power limit can be different per motherboard manufacturer, the PL1 and PL2 states.

They can work at MTP values, which means higher frequencies compared to the drain, and so heating. We don't know the temperatures of constant boost CPUs yet, but we do know their performance. Chinese colleagues ran a comparison test in Cinebench R20 with interesting findings. PL1 is 125W and PL2 is 241W for the i9-12900K. The i7-12700K has 125 and 190 W, whereas the i5-12600K has 125 and 150 W. The Intel Core i9-12900K scores 7492 points with 125 W TDP and 10180 points or 36% quicker at 241 W MTP (long burst PL2 states). TDP is a  confusing thing these days.

Intel Core i9-12900K roughly 35% faster in Cinebench R20 using Maximum Turbo Power (PL2) state