I'm reading this datasheet, here there aren't a beautiful function like DC%=... So, i think a function that governate DC%(and the graph at page 41-42) is: DC%=minDC%+170*(maxDC%-minDC%)*(T-Tmin)/Trange where Trange is that wich in datasheet is called "effective Tange" at page 40. Trange=(maxDCdecimal-minDCdecimal)*Tr/170 where Tr is Trange not effective. Whit rivatuner i have this parameters: minDC=45 maxDc=100 Tmin=45 Trange=26 ------------- To set auto Tmin to off ------- Toperating=150 Tlow limit=0 Thight limit=150 The problem is if i draw graph(DC% / T) with this data i find a function that don't follow the real trend of DC% for T. I have 45% until my temp is under 55°C instead 45% untile temp is under 45°C(like graph). I have some question for Unwinder: 1)Trange in rivatuner i effective Trange or Tr? 2)DC in rivatuner are %percent or decimal? 3)Do you think this function is accurate or wrong?

I think that you've to reread the datasheet carfeully. RT displays units when you select a parameter, and duty cycle unit is %. And finally, search really does the magic, so use it.

Im thinking my assumption is good, but my error is to use nvthermaldiode instead ADT7473.dll to monitoring core temperature...:bang: Here use this formula for Trange: TR=2/3*(Tmax-Tmin)/(Dmax-Dmin) Im using(according whit datasheet) this: Tr=Trange*170/(maxDC-minDC) where TRange is Tmax-Tmin and max/minDC is in decimal(0-255) mmmm...

Ok, all is correct, the different in two formulas is that im using decimal(0-255) for DC and ribbel use (0-1) but both have the same result. Good, now all work.