I recently looked into undervolting my RX 7900 XTX and my surprise was huge when I saw that the very intuitive voltage and clock curve known from the Polaris series is no longer available. The current options for changing voltages and clocks have been greatly simplified and do not give as good results as the previously mentioned curve. I really wish some AMD programmer would read this post and decide to bring back the good old voltage curve in the Adrenalin software for all RDNA series.