Bitmain Antminer T9+ (10.5Th) vs Bitdeer SealMiner A3 Pro Air
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer T9+ (10.5Th) | Specification | Bitdeer SealMiner A3 Pro Air |
|---|---|---|
| 10.5 TH/s | Hashrate | 290.0 TH/s |
| 1,432 W | Power Consumption | 3,625 W |
| 136.4 J/TH | Efficiency | 12.5 J/TH |
| — | Noise Level | 75 dB |
| 4,200.0 kg | Weight | 15.5 kg |
| 4,886 BTU/hr | BTU Output | 12,369 BTU/hr |
| 31/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Bitmain Antminer T9+ (10.5Th)
Bitdeer SealMiner A3 Pro Air
Based on BTC price of $79,022 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitdeer SealMiner A3 Pro Air, which leads on 4 of 6 weighted factors (efficiency, hashrate, noise level, price-performance). Its biggest concrete edge: 2662% more hashrate (10.5 vs 290.0 TH/s). The Bitmain Antminer T9+ (10.5Th) holds the edge in power consumption and home mining score. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer T9+ (10.5Th) and Bitdeer SealMiner A3 Pro Air sit on each measurable spec:
- Bitdeer SealMiner A3 Pro Air 2662% more hashrate (10.5 vs 290.0 TH/s)
- Bitmain Antminer T9+ (10.5Th) 60% better power draw (1,432 vs 3,625 W)
- Bitdeer SealMiner A3 Pro Air 91% better efficiency (136.4 vs 12.5 J/TH)
- Bitdeer SealMiner A3 Pro Air 100% better weight (4,200.0 vs 15.5 kg)
- Bitdeer SealMiner A3 Pro Air 153% more heat output (4,886 vs 12,369 BTU/hr)
- Bitmain Antminer T9+ (10.5Th) 3% more home mining score (31.0 vs 30.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Bitmain Antminer T9+ (10.5Th) | Metric | Bitdeer SealMiner A3 Pro Air |
|---|---|---|
| $955 | Upfront cost (MSRP) | $4,895 |
| -$3.05 | Daily net profit | $1.85 |
| -$2,070 | Net after 1 year | -$4,221 |
| -$3,185 | Net after 2 years | -$3,548 |
| -$4,300 | Net after 3 years | -$2,874 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~7.3 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 Pro Air$4.90/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer T9+ (10.5Th)Score: 31/100. 0 dB noise level.
Best for Efficiency
Bitdeer SealMiner A3 Pro Air12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer T9+ (10.5Th) vs Bitdeer SealMiner A3 Pro Air: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A3 Pro Air is more profitable at $1.85/day compared to $-3.05/day for the Bitmain Antminer T9+ (10.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer T9+ (10.5Th) or Bitdeer SealMiner A3 Pro Air?
The Bitdeer SealMiner A3 Pro Air is quieter at 75 dB compared to the Bitmain Antminer T9+ (10.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Bitmain Antminer T9+ (10.5Th) or the Bitdeer SealMiner A3 Pro Air?
The Bitmain Antminer T9+ (10.5Th) scores 31/100 on our Home Mining Score (vs 30/100 for the Bitdeer SealMiner A3 Pro Air). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Bitmain Antminer T9+ (10.5Th) and Bitdeer SealMiner A3 Pro Air on J/TH?
The Bitmain Antminer T9+ (10.5Th) runs at 136.4 J/TH while the Bitdeer SealMiner A3 Pro Air runs at 12.5 J/TH — a difference of 123.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 91% better efficiency (136.4 vs 12.5 J/TH).
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