Bitdeer SealMiner A3 Pro Air vs MicroBT WhatsMiner M78
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitdeer SealMiner A3 Pro Air | Specification | MicroBT WhatsMiner M78 |
|---|---|---|
| 290.0 TH/s | Hashrate | 464.0 TH/s |
| 3,625 W | Power Consumption | 6,728 W |
| 12.5 J/TH | Efficiency | 14.5 J/TH |
| 75 dB | Noise Level | 75 dB |
| 15.5 kg | Weight | 18.0 kg |
| 12,369 BTU/hr | BTU Output | 22,956 BTU/hr |
| 30/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitdeer | Manufacturer | MicroBT |
Profitability Comparison
Bitdeer SealMiner A3 Pro Air
MicroBT WhatsMiner M78
Based on BTC price of $76,568 and current network difficulty as of May 19, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitdeer SealMiner A3 Pro Air wins on 2 of 3 factors (efficiency, power consumption). The standout gap is 46% better power draw (3,625 vs 6,728 W) in the Bitdeer SealMiner A3 Pro Air's favour. That said, the MicroBT WhatsMiner M78 isn't beaten everywhere — it still wins hashrate. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitdeer SealMiner A3 Pro Air and MicroBT WhatsMiner M78 sit on each measurable spec:
- MicroBT WhatsMiner M78 60% more hashrate (290 vs 464 TH/s)
- Bitdeer SealMiner A3 Pro Air 46% better power draw (3,625 vs 6,728 W)
- Bitdeer SealMiner A3 Pro Air 14% better efficiency (12.5 vs 14.5 J/TH)
- Bitdeer SealMiner A3 Pro Air 14% better weight (15.5 vs 18.0 kg)
- MicroBT WhatsMiner M78 86% more heat output (12,369 vs 22,956 BTU/hr)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Bitdeer SealMiner A3 Pro Air | Metric | MicroBT WhatsMiner M78 |
|---|---|---|
| $4,895 | Upfront cost (MSRP) | — |
| $5.26 | Daily net profit | $6.19 |
| -$2,976 | Net after 1 year | +$2,258 |
| -$1,056 | Net after 2 years | +$4,516 |
| +$863 | Net after 3 years | +$6,775 |
| Pays for itself in ~31 months at current rates | Payback period | — |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
MicroBT WhatsMiner M78$0.93/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitdeer SealMiner A3 Pro Air12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitdeer SealMiner A3 Pro Air or MicroBT WhatsMiner M78 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M78 is more profitable at $6.19/day compared to $5.26/day for the Bitdeer SealMiner A3 Pro Air. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitdeer SealMiner A3 Pro Air or the MicroBT WhatsMiner M78 better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Bitdeer SealMiner A3 Pro Air vs MicroBT WhatsMiner M78: which fits a residential setup better?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
How far apart are the Bitdeer SealMiner A3 Pro Air and MicroBT WhatsMiner M78 on J/TH?
The Bitdeer SealMiner A3 Pro Air runs at 12.5 J/TH while the MicroBT WhatsMiner M78 runs at 14.5 J/TH — a difference of 2.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 14% better efficiency (12.5 vs 14.5 J/TH).
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