Bitmain S19k Pro vs Bitdeer SealMiner A3 Pro Hydro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain S19k Pro | Specification | Bitdeer SealMiner A3 Pro Hydro |
|---|---|---|
| 120.0 TH/s | Hashrate | 660.0 TH/s |
| 2,760 W | Power Consumption | 8,250 W |
| 23.0 J/TH | Efficiency | 12.5 J/TH |
| 75 dB | Noise Level | 50 dB |
| 14.5 kg | Weight | 20.5 kg |
| 9,417 BTU/hr | BTU Output | 28,149 BTU/hr |
| 36/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Bitmain S19k Pro
Bitdeer SealMiner A3 Pro Hydro
Based on BTC price of $79,143 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitdeer SealMiner A3 Pro Hydro wins on 4 of 6 factors (efficiency, hashrate, home mining score, noise level). Its biggest concrete edge: 450% more hashrate (120 vs 660 TH/s). That said, the Bitmain S19k Pro isn't beaten everywhere — it still wins power consumption and price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain S19k Pro and Bitdeer SealMiner A3 Pro Hydro sit on each measurable spec:
- Bitdeer SealMiner A3 Pro Hydro 450% more hashrate (120 vs 660 TH/s)
- Bitmain S19k Pro 67% better power draw (2,760 vs 8,250 W)
- Bitdeer SealMiner A3 Pro Hydro 46% better efficiency (23.0 vs 12.5 J/TH)
- Bitdeer SealMiner A3 Pro Hydro 33% better noise (75.0 vs 50.0 dB)
- Bitmain S19k Pro 29% better weight (14.5 vs 20.5 kg)
- Bitdeer SealMiner A3 Pro Hydro 199% more heat output (9,417 vs 28,149 BTU/hr)
- Bitdeer SealMiner A3 Pro Hydro 22% more home mining score (36.0 vs 44.0)
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 S19k Pro | Metric | Bitdeer SealMiner A3 Pro Hydro |
|---|---|---|
| $313 | Upfront cost (MSRP) | $7,995 |
| -$2.25 | Daily net profit | $4.24 |
| -$1,136 | Net after 1 year | -$6,448 |
| -$1,958 | Net after 2 years | -$4,902 |
| -$2,781 | Net after 3 years | -$3,355 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~5.2 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 Hydro$6.49/day higher profit at current rates.
Best for Home Mining
Bitdeer SealMiner A3 Pro HydroScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitdeer SealMiner A3 Pro Hydro12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain S19k Pro or the Bitdeer SealMiner A3 Pro Hydro?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A3 Pro Hydro is more profitable at $4.24/day compared to $-2.25/day for the Bitmain S19k Pro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain S19k Pro or Bitdeer SealMiner A3 Pro Hydro?
The Bitdeer SealMiner A3 Pro Hydro is quieter at 50 dB compared to the Bitmain S19k Pro at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Bitmain S19k Pro or the Bitdeer SealMiner A3 Pro Hydro?
The Bitdeer SealMiner A3 Pro Hydro scores 44/100 on our Home Mining Score (vs 36/100 for the Bitmain S19k Pro). 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 S19k Pro and Bitdeer SealMiner A3 Pro Hydro on J/TH?
The Bitmain S19k Pro runs at 23.0 J/TH while the Bitdeer SealMiner A3 Pro Hydro runs at 12.5 J/TH — a difference of 10.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 46% better efficiency (23.0 vs 12.5 J/TH).
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