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On my L3+ I'm running at 444 (580Mh\s) and the fan is set at 60%. My Antminers are in a server room and temps range from 47 to 53 degrees celsius. I didnt overclock my D3 miners as they are running at 17500Mh\s with default settings but I did set the fan at 70%.

Thank you, BTC sent.

Greatly appreciated :)