Just fyi, it isn't a "forum rumor," hardocp stated in their review that their 780ti was reading higher boost clocks and 3 degrees higher temps than previous drivers. Since I don't speak German, I can't confirm the actual translation, but I could shoot an email to h to confirm.
These drivers seem to have issues with AB and other OC utilities for some people ,hopefully WHQL will be ok .
HardOCP used reference 780ti , most people in forums use 3rd party coolers/cards so they don't get to high 80's .
I have not seen anyone mention higher clocks in forums .
Probably just bug in driver .