Bitmain Antminer T9 (12.5Th) vs Bitdeer SealMiner A2
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer T9 (12.5Th) | Specification | Bitdeer SealMiner A2 |
|---|---|---|
| 12.5 TH/s | Taux de hachage | 226.0 TH/s |
| 1,576 W | Consommation électrique | 3,730 W |
| 126.1 J/TH | Efficiency | 16.5 J/TH |
| — | Niveau de bruit | 75 dB |
| 3,800.0 kg | Weight | 15.5 kg |
| 5,377 BTU/hr | BTU Output | 12,727 BTU/hr |
| 28/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Bitmain Antminer T9 (12.5Th)
Bitdeer SealMiner A2
Based on BTC price of $78,163 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitdeer SealMiner A2 comes out ahead — it takes 5 of 6 (efficacité, hashrate, score de minage domestique, niveau sonore, rapport qualité-prix). Its biggest concrete edge: 1708% more hashrate (12.5 vs 226.0 TH/s). That said, the Bitmain Antminer T9 (12.5Th) isn't beaten everywhere — it still wins consommation électrique. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Bitmain Antminer T9 (12.5Th) and Bitdeer SealMiner A2 actually differ, with the gap quantified:
- Bitdeer SealMiner A2 1708% more hashrate (12.5 vs 226.0 TH/s)
- Bitmain Antminer T9 (12.5Th) 58% better power draw (1,576 vs 3,730 W)
- Bitdeer SealMiner A2 87% better efficacité (126.1 vs 16.5 J/TH)
- Bitdeer SealMiner A2 100% better weight (3,800.0 vs 15.5 kg)
- Bitdeer SealMiner A2 137% more heat output (5,377 vs 12,727 BTU/hr)
- Bitdeer SealMiner A2 7% more score de minage domestique (28.0 vs 30.0)
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.
| Bitmain Antminer T9 (12.5Th) | Metric | Bitdeer SealMiner A2 |
|---|---|---|
| $1,100 | Upfront cost (MSRP) | $2,760 |
| -$3.33 | Daily net profit | -$0.82 |
| -$2,316 | Net after 1 year | -$3,060 |
| -$3,533 | Net after 2 years | -$3,361 |
| -$4,749 | Net after 3 years | -$3,661 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
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
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitdeer SealMiner A2Score: 30/100. 75 dB noise level.
Best for Efficiency
Bitdeer SealMiner A216.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer T9 (12.5Th) or the Bitdeer SealMiner A2?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A2 is more profitable at $-0.82/day compared to $-3.33/day for the Bitmain Antminer T9 (12.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer T9 (12.5Th) or the Bitdeer SealMiner A2 better for noise-sensitive spaces?
The Bitdeer SealMiner A2 is quieter at 75 dB compared to the Bitmain Antminer T9 (12.5Th) 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 (12.5Th) or the Bitdeer SealMiner A2?
The Bitdeer SealMiner A2 scores 30/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer T9 (12.5Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer T9 (12.5Th) vs Bitdeer SealMiner A2: how much does the efficiency gap matter?
The Bitmain Antminer T9 (12.5Th) runs at 126.1 J/TH while the Bitdeer SealMiner A2 runs at 16.5 J/TH — a difference of 109.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 87% better efficacité (126.1 vs 16.5 J/TH).
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