I use the Powenetics system to measure power consumption in every significant part of the mainboard, with up to 1000 readings per second.
Peak Power Consumption
I obtained the peak power consumption readings shown in the graph above during the start of the Prime95 benchmark. With Prime95 running for over 30 minutes, I noticed power spikes exceeding 400W!
Besides power consumption, I also look at the energy usage of each CPU to see how efficient they are; by calculating the total amount of power required to finish two tasks, a Super Pi run indicative of single-threaded applications and a Cinebench run for multi-threaded scenarios.
In single-thread, energy usage is increased because the Z690 mainboard needs more energy than the B760 one.