I tested underclocking-volting the C1.
The best setting was suggested by another user 2 weeks ago:
675/200 530W 803Mhs 0.66W/Mhs
760/250 790W 1008Mhs 0.783W/Mhs
FYI I have an EVGA 1300W gold.
Wish he had included F° & inHg. And is the supply on 120vac or 230vac?
120vac recorded at the wall with a kill-a-watt. It's 21-22C around the miner 32C in the miner web admin. It was 36C with the default setting.