Just use your cellphone for low power usage and lower heat. All others want POWAAA!
Seriously, AMD has the best power/performance ratio and that will not change. If you really need to lower your CPU power consumption, just buy entry level CPU, not high end.
High end is not for everyone (surely not for those who save $ on electricity). I personally do not care about power consumption of my CPU, when my GPU is 5x more power hungry in 4k gaming and I do not care about that either
Live is about choices and priorities, right?