Bitdeer SealMiner A2 Hyd vs Bitdeer SealMiner A3 Air
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitdeer SealMiner A2 Hyd | Specification | Bitdeer SealMiner A3 Air |
|---|---|---|
| 446.0 TH/s | Hashrate | 260.0 TH/s |
| 7,360 W | Power Consumption | 3,640 W |
| 16.5 J/TH | Efficiency | 14.0 J/TH |
| 50 dB | Noise Level | 75 dB |
| 20.5 kg | Weight | 15.5 kg |
| 25,112 BTU/hr | BTU Output | 12,420 BTU/hr |
| 44/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitdeer | Manufacturer | Bitdeer |
Profitability Comparison
Bitdeer SealMiner A2 Hyd
Bitdeer SealMiner A3 Air
Based on BTC price of $78,227 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitdeer SealMiner A2 Hyd, which leads on 4 of 6 weighted factors (hashrate, home mining score, noise level, price-performance). The standout gap is 72% more hashrate (446 vs 260 TH/s) in the Bitdeer SealMiner A2 Hyd's favour. That said, the Bitdeer SealMiner A3 Air isn't beaten everywhere — it still wins efficiency and power consumption. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Bitdeer SealMiner A2 Hyd and Bitdeer SealMiner A3 Air diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitdeer SealMiner A2 Hyd 72% more hashrate (446 vs 260 TH/s)
- Bitdeer SealMiner A3 Air 51% better power draw (7,360 vs 3,640 W)
- Bitdeer SealMiner A3 Air 15% better efficiency (16.5 vs 14.0 J/TH)
- Bitdeer SealMiner A2 Hyd 33% better noise (50.0 vs 75.0 dB)
- Bitdeer SealMiner A3 Air 24% better weight (20.5 vs 15.5 kg)
- Bitdeer SealMiner A2 Hyd 102% more heat output (25,112 vs 12,420 BTU/hr)
- Bitdeer SealMiner A2 Hyd 47% more home mining score (44.0 vs 30.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Bitdeer SealMiner A2 Hyd | Metric | Bitdeer SealMiner A3 Air |
|---|---|---|
| $6,150 | Upfront cost (MSRP) | $3,900 |
| -$1.61 | Daily net profit | $0.62 |
| -$6,737 | Net after 1 year | -$3,672 |
| -$7,324 | Net after 2 years | -$3,445 |
| -$7,911 | Net after 3 years | -$3,217 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~17.1 years to pay back at current rates |
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
Bitdeer SealMiner A3 Air$2.23/day higher profit at current rates.
Best for Home Mining
Bitdeer SealMiner A2 HydScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitdeer SealMiner A3 Air14.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitdeer SealMiner A2 Hyd or Bitdeer SealMiner A3 Air more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A3 Air is more profitable at $0.62/day compared to $-1.61/day for the Bitdeer SealMiner A2 Hyd. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitdeer SealMiner A2 Hyd or Bitdeer SealMiner A3 Air?
The Bitdeer SealMiner A2 Hyd is quieter at 50 dB compared to the Bitdeer SealMiner A3 Air at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Bitdeer SealMiner A2 Hyd vs Bitdeer SealMiner A3 Air: which fits a residential setup better?
The Bitdeer SealMiner A2 Hyd scores 44/100 on our Home Mining Score (vs 30/100 for the Bitdeer SealMiner A3 Air). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitdeer SealMiner A2 Hyd vs Bitdeer SealMiner A3 Air: how much does the efficiency gap matter?
The Bitdeer SealMiner A2 Hyd runs at 16.5 J/TH while the Bitdeer SealMiner A3 Air runs at 14.0 J/TH — a difference of 2.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 15% better efficiency (16.5 vs 14.0 J/TH).