I’m operating just a few previous miners (T9+) to warmth my dwelling and they’re too loud and making a loss (which is okay, as I’m within the warmth). Following this suggestions (sticking with the standard firmware) I already decreased the fan-speed by including the next entries to /conf/bmminer.conf

"bitmain-fan-ctrl": true,
"bitmain-fan-pwm": "66",

This resulted in an elevated temperature of the chips (nonetheless under 100 deg C) as might be seen right here:

coming from right here (under 80 deg C):

enter image description here

Since I’m nonetheless not too pleased with the noise stage (discount from 75db to 60db) thus I’m contemplating to below clock the miners.

I consider that the frequency and Hashrate ought to observe a linear / proportional legislation which means that lowering the frequency by 20% from 550 to 440 ought to end in a decreased hash charge by 20% from 10.5 to eight.four TH/sec. Can somebody please verify this?

I’m really extra thinking about what’s the relationship to energy consumption. I’m at present mining at a loss which means I can not afford the identical vitality value at a decrease hash charge. I learn that overclocking shouldn’t be financial because the vitality consumption doesn’t develop linear.

  • Would that even maintain true within the different course?
  • May the mining value even break even (neglicting {hardware} value) if I would scale back the frequency by 50 or extra p.c?
  • The place can I discover a plot to measure this impact or how may I create one? (I’m not a electrician)

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