Energy efficiency
18.5 J/TH
5,513 W ÷ 298 TH/s
#62 of 99 in the catalog
ASIC miner · MicroBT Sold by manufacturer: yes
MicroBT Whatsminer M66S
An immersion-cooled Bitcoin ASIC with 298 TH/s at 5,513 W — 18.5 J/TH.
About Whatsminer M66S
The Whatsminer M66S is MicroBT's immersion-cooled model, released in October 2023. At 18.5 J/TH it ranks #62 of 99 in the catalog by efficiency, and 10th of 11 among immersion-cooled machines.
With immersion cooling and 5.5 kW it needs a hosting site or a data center. It comes in hashrate variants from 270 to 298 TH/s; this page uses the manufacturer's nominal 298 TH/s.
What the specs add up to
Derived from the specs below, with the formula on every card. Estimates, not a forecast
Electricity used per day
132.3 kWh
5.51 kW × 24 h
48.3 MWh a year
Electricity cost per day
$13.23
132.3 kWh × $0.10 per kWh
Break-even electricity price
$0.068 / kWh
Estimated daily reward ÷ electricity used per day
As of 13 Nov 2026
Built for
Data center
5.51 kW of heat
Home class: up to 50 dB and 1.4 kW, air cooling
Hashrate per kW
54.1 TH/s
298 TH/s ÷ 5.51 kW
Whatsminer M66S or a digital miner with the same 298 TH/s
Same hashrate, side by side. Scenario: you run the machine yourself, on household electricity. Numbers follow our reward calculator and update daily
BTC price · 13 Nov 2026$70,780
Whatsminer M66S
Your own machine · 298 TH/s · 18.5 J/TH
- Upfront cost
- Not shownNot in the catalog yet — see the manufacturer's store
- Reward per day (est.)
- 0.00013 BTC≈ $8.98 at the same hashrate
- Running cost per day
- $13.235.51 kW × 24 h × $0.10 per kWh
- Net per day (est.)
- −$4.26At your electricity price
- Delivery and setup
- Shipping, customs, pool setup
- Noise and heat
- 5.51 kW of heat at your place
GoMining digital miner
298 TH/s · 15 J/TH · runs in our data centers
- Upfront cost
- $3,400298 TH × $11.41 per TH
- Reward per day (est.)
- 0.00013 BTC≈ $8.98
- Running cost per day
- $8.02Daily maintenance fee: electricity and service
- Net per day (est.)
- $0.96After the maintenance fee
- Delivery and setup
- Nothing to ship — runs in the app
- Noise and heat
- Nothing at your place
Break-even electricity price for this model: $0.068 per kWh. Above it, electricity costs more than the estimated reward
Estimates, not a forecast. Based on the BTC price, network difficulty and GoMining fees as of 13 Nov 2026; specs as published by the manufacturer. Assumes the machine runs 24/7 with no pool fee; industrial hosting is a different calculation. The digital miner's fee is shown before discounts. Mining rewards vary and are not guaranteed; they may fall below fees. Not investment advice. See terms
Whatsminer M66S specifications
16 characteristics, each with its source and the date we checked it. Values are nominal, as published by the manufacturer
- Published spec
- Calculated by GoMining
- Not found
- Manufacturer
- MicroBT
- Model
- Whatsminer M66S
- Algorithm
- SHA-256 (Bitcoin)
- Energy efficiency
- 18.5 J/TH
- Calculated
- Noise level
- Not applicable
- Coolant inlet temperature
- —
- Not found · 16 Oct 2026
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*The bonus miner is subject to vesting and requires a qualifying transaction. Rewards vary and are not guaranteed. See full terms
常见问题解答
Questions about this model. For everything else, head to the Help Center