I'm going crazy ...
Today I setup 2 new fully identical rigs.
Both biostar btc-250 pro, core i5 6100, 12xGPU Zotac 1060, same power, ram, ssd, ...
Problem is one of them hashes much less than the other
Any ideas ?
Same PSU, too? You can tell if they are using identical power with:
nvidia-smi --query-gpu=temperature.gpu,fan.speed,power.draw,power.limit --format=csv
Hope this helps.