Intel Core i7-5820K 3.3 GHz 6-Core Processor
Oh boy, this is probably the least efficient cpu I ever seen and it consume almost as much as my Epyc 7551, check the TDP value.
That's a good list of LGA-2011-3 but crosscheck with CpuBenchmark : https://www.cpu-list.com/lga-2011-3-cpu-list/eng/
Yeah...this started on trade up parts and it's still running on them. I figured now is the time to actually buy a proper setup.
This video by Wolfgang has tons of good information on finding a good low power cpu.
There is a google sheet pinned at the top where people have real world power measurements.
Basically you want to find a low TDP cpu/motherboard combo.