Intel support told me that the max is 75C
I have adjusted down from 80C peak. New Max CPU Current Limit settings for 75C is now 76 AMPS.
This gives still gives me short turboboost to 44x but under stress, the cpu is limited to 38x at a core voltage of 1.0340v
(Big $$$$ for a 38x peak processor. !!)
This is set in bios of the Asrock Z97 extreme6 , but I used the Intel extreme Tuning Utility to set and test for a lower peak temp.
The "Processor Current Limit" of 76 Amps is the only setting that I make.