bahianus, I'm not 100% sure what you're saying so sorry if this response doesn't make sense. I will try to summarize what's going on so far, at least from my point-of-view.
My first 4790K passed the Intel PDT, but when trying to run Intel XTU stress test and other third party CPU stress tests, I would get temperatures of 90C-100C at stock settings. ken-intel gave us some settings to use in XTU and using his settings, I was able to get my temperatures in the Intel XTU down to acceptable limits. The problem is, his settings also limited the processor to 3.6 GHz. I contacted Intel and at first they refused to do an RMA; since I was passing the PDT they said there was "nothing wrong with my processor" even though their own Intel XTU at stock settings was giving me 100C. After some back and forth with them, they reluctantly agreed to do an RMA for me. The "new" processor I received is running in 60C's at stock settings on the same tests (except for Prime95 Small FFT which is still giving 99C) without having to limit the processor with the settings suggested by ken-intel.
Here are a few things that I firmly believe so far:
1) Some 3rd party stress tests (ie Prime95) are giving instructions to the CPU that probably no other application will give to the processor, and these instructions are causing the CPU to run at extremely high temperatures.
2) Stock (out-of-the-box) settings of many motherboards, regardless of brand, are unnecessarily high and causing the 4790K to run hot. Clearing CMOS has fixed this issue in most cases.
3) Still, all things considered, some (many) of the i7 4790K's that were manufactured by Intel are "faulty" and giving temperatures that are way too high and need to be replaced by Intel.
Other than that, the other problems reported here I don't believe are specific to the 4790K. For example, proper case cooling, proper installation of CPU fan, contact issue with some Corsair liquid cooling systems, thermal paste differences, etc. If these were the issues that were causing the 4790K to overheat, we would be seeing it in more processors and not just the 4790K. But this heating issue, as far as I know, seems to be limited to the 4790K. There are some reports of the other Devil's Canyon (i5 4690K) having some issues, but nowhere near as widespread. However, the Haswell family as a whole seems to have quite a few reports of overheating, so it may be a bigger issue; I don't know for sure. However, most of the overheating chatter seems to revolve around the 4790K.