Bitmain Antminer S21e Hyd (288Th) vs Bitdeer SealMiner A3 Pro Hydro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21e Hyd (288Th) | Specification | Bitdeer SealMiner A3 Pro Hydro |
|---|---|---|
| 288.0 TH/s | Hashrate | 660.0 TH/s |
| 4,896 W | Power Consumption | 8,250 W |
| 17.0 J/TH | Efficiency | 12.5 J/TH |
| 50 dB | Noise Level | 50 dB |
| 13.8 kg | Weight | 20.5 kg |
| 16,705 BTU/hr | BTU Output | 28,149 BTU/hr |
| 44/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Bitmain Antminer S21e Hyd (288Th)
Bitdeer SealMiner A3 Pro Hydro
Based on BTC price of $79,091 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitdeer SealMiner A3 Pro Hydro edges it: 2 of 4 factors go its way (efficiency, hashrate). Its biggest concrete edge: 129% more hashrate (288 vs 660 TH/s). That said, the Bitmain Antminer S21e Hyd (288Th) isn't beaten everywhere — it still wins power consumption and price-performance. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Bitmain Antminer S21e Hyd (288Th) and Bitdeer SealMiner A3 Pro Hydro actually differ, with the gap quantified:
- Bitdeer SealMiner A3 Pro Hydro 129% more hashrate (288 vs 660 TH/s)
- Bitmain Antminer S21e Hyd (288Th) 41% better power draw (4,896 vs 8,250 W)
- Bitdeer SealMiner A3 Pro Hydro 26% better efficiency (17.0 vs 12.5 J/TH)
- Bitmain Antminer S21e Hyd (288Th) 33% better weight (13.8 vs 20.5 kg)
- Bitdeer SealMiner A3 Pro Hydro 69% more heat output (16,705 vs 28,149 BTU/hr)
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 S21e Hyd (288Th) | Metric | Bitdeer SealMiner A3 Pro Hydro |
|---|---|---|
| $1,498 | Upfront cost (MSRP) | $7,995 |
| -$1.27 | Daily net profit | $4.22 |
| -$1,961 | Net after 1 year | -$6,454 |
| -$2,424 | Net after 2 years | -$4,913 |
| -$2,887 | Net after 3 years | -$3,372 |
| 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$5.49/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
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 Antminer S21e Hyd (288Th) 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 $4.22/day compared to $-1.27/day for the Bitmain Antminer S21e Hyd (288Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S21e Hyd (288Th) vs Bitdeer SealMiner A3 Pro Hydro: which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S21e Hyd (288Th) or Bitdeer SealMiner A3 Pro Hydro?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
How far apart are the Bitmain Antminer S21e Hyd (288Th) and Bitdeer SealMiner A3 Pro Hydro on J/TH?
The Bitmain Antminer S21e Hyd (288Th) runs at 17.0 J/TH while the Bitdeer SealMiner A3 Pro Hydro runs at 12.5 J/TH — a difference of 4.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 26% better efficiency (17.0 vs 12.5 J/TH).
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