I'm also facing problems with my 4790k, just noticed that it is hitting 100c under load and this is really worrying, as I never had any issues with my previous builds and I have already re-ensured that the thermal compound and heat sink are correctly applied and placed.
I hope intel can get back to us soon regarding this as it seems that we have all done everything correctly but the chip is not performing as spec-ed.
I think we would all appreciate it if Allan could give up a periodic update on the progress on this issue.
Thanks!