Energy efficiency
15.5 J/TH
5,518 W ÷ 356 TH/s
#41 of 99 in the catalog
ASIC miner · MicroBT
MicroBT Whatsminer M66S++
An immersion-cooled Bitcoin ASIC with 356 TH/s at 5,518 W — 15.5 J/TH.
About Whatsminer M66S++
The Whatsminer M66S++ is MicroBT's immersion-cooled model, released in December 2024. At 15.5 J/TH it ranks #41 of 99 in the catalog by efficiency, and 6th 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 314 to 356 TH/s; this page uses the manufacturer's nominal 356 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
132.4 kWh
5.52 kW × 24 h
48.3 MWh a year
Electricity cost per day
$13.24
132.4 kWh × $0.10 per kWh
Break-even electricity price
$0.081 / kWh
Estimated daily reward ÷ electricity used per day
As of 13 Nov 2026
Built for
Data center
5.52 kW of heat
Home class: up to 50 dB and 1.4 kW, air cooling
Hashrate per kW
64.5 TH/s
356 TH/s ÷ 5.52 kW
Whatsminer M66S++ or a digital miner with the same 356 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 · 356 TH/s · 15.5 J/TH
- Upfront cost
- Not shownNot in the catalog yet — see the manufacturer's store
- Reward per day (est.)
- 0.00015 BTC≈ $10.72 at the same hashrate
- Running cost per day
- $13.245.52 kW × 24 h × $0.10 per kWh
- Net per day (est.)
- −$2.52At your electricity price
- Delivery and setup
- Shipping, customs, pool setup
- Noise and heat
- 5.52 kW of heat at your place
GoMining digital miner
356 TH/s · 15 J/TH · runs in our data centers
- Upfront cost
- $4,040356 TH × $11.35 per TH
- Reward per day (est.)
- 0.00015 BTC≈ $10.72
- Running cost per day
- $9.58Daily maintenance fee: electricity and service
- Net per day (est.)
- $1.15After 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: $0.081 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
- 15.5 J/TH
- Calculated
- Sold by manufacturer
- —
- Not found · 16 Oct 2026
- Noise level
- Not applicable
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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
Frequently Asked Questions
Questions about this model. For everything else, head to the Help Center