Bitmain Antminer S11 (20.5Th) vs Bitdeer SealMiner A3 Hydro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S11 (20.5Th) | Specification | Bitdeer SealMiner A3 Hydro |
|---|---|---|
| 20.5 TH/s | Taux de hachage | 500.0 TH/s |
| 1,530 W | Consommation électrique | 6,750 W |
| 74.6 J/TH | Efficiency | 13.5 J/TH |
| — | Niveau de bruit | 50 dB |
| 6,500.0 kg | Weight | 20.5 kg |
| 5,220 BTU/hr | BTU Output | 23,031 BTU/hr |
| 28/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Bitmain Antminer S11 (20.5Th)
Bitdeer SealMiner A3 Hydro
Based on BTC price of $78,223 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitdeer SealMiner A3 Hydro comes out ahead — it takes 4 of 5 (efficacité, hashrate, score de minage domestique, niveau sonore). The standout gap is 2339% more hashrate (20.5 vs 500.0 TH/s) in the Bitdeer SealMiner A3 Hydro's favour. That said, the Bitmain Antminer S11 (20.5Th) isn't beaten everywhere — it still wins consommation électrique. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Bitmain Antminer S11 (20.5Th) and Bitdeer SealMiner A3 Hydro diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitdeer SealMiner A3 Hydro 2339% more hashrate (20.5 vs 500.0 TH/s)
- Bitmain Antminer S11 (20.5Th) 77% better power draw (1,530 vs 6,750 W)
- Bitdeer SealMiner A3 Hydro 82% better efficacité (74.6 vs 13.5 J/TH)
- Bitdeer SealMiner A3 Hydro 100% better weight (6,500.0 vs 20.5 kg)
- Bitdeer SealMiner A3 Hydro 341% more heat output (5,220 vs 23,031 BTU/hr)
- Bitdeer SealMiner A3 Hydro 57% more score de minage domestique (28.0 vs 44.0)
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.
| Bitmain Antminer S11 (20.5Th) | Metric | Bitdeer SealMiner A3 Hydro |
|---|---|---|
| — | Upfront cost (MSRP) | $6,650 |
| -$2.93 | Daily net profit | $1.80 |
| -$1,071 | Net after 1 year | -$5,994 |
| -$2,142 | Net after 2 years | -$5,337 |
| -$3,213 | Net after 3 years | -$4,681 |
| — | Payback period | Takes ~10.1 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 Hydro$4.73/day higher profit at current rates.
Best for Home Mining
Bitdeer SealMiner A3 HydroScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitdeer SealMiner A3 Hydro13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer S11 (20.5Th) or the Bitdeer SealMiner A3 Hydro?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A3 Hydro is more profitable at $1.80/day compared to $-2.93/day for the Bitmain Antminer S11 (20.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S11 (20.5Th) vs Bitdeer SealMiner A3 Hydro: which runs at a lower noise level?
The Bitdeer SealMiner A3 Hydro is quieter at 50 dB compared to the Bitmain Antminer S11 (20.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S11 (20.5Th) or Bitdeer SealMiner A3 Hydro?
The Bitdeer SealMiner A3 Hydro scores 44/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer S11 (20.5Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Bitmain Antminer S11 (20.5Th) and Bitdeer SealMiner A3 Hydro?
The Bitmain Antminer S11 (20.5Th) runs at 74.6 J/TH while the Bitdeer SealMiner A3 Hydro runs at 13.5 J/TH — a difference of 61.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 82% better efficacité (74.6 vs 13.5 J/TH).
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