Bitmain Antminer S21 XP Hyd vs Bitdeer SealMiner A3 Pro Hydro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 XP Hyd | Specification | Bitdeer SealMiner A3 Pro Hydro |
|---|---|---|
| 473.0 TH/s | Hashrate | 660.0 TH/s |
| 5,676 W | Power Consumption | 8,250 W |
| 12.0 J/TH | Efficiency | 12.5 J/TH |
| 50 dB | Noise Level | 50 dB |
| 12.3 kg | Weight | 20.5 kg |
| 19,367 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 S21 XP Hyd
Bitdeer SealMiner A3 Pro Hydro
Based on BTC price of $70,684 and current network difficulty as of Mar 24, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 XP Hyd wins on 3 of 4 factors (efficiency, power consumption, price-performance). The Bitdeer SealMiner A3 Pro Hydro holds the edge in hashrate. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Best For...
Best for Profitability
Bitmain Antminer S21 XP Hyd$0.45/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain Antminer S21 XP Hyd12.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 XP Hyd or Bitdeer SealMiner A3 Pro Hydro more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP Hyd is more profitable at $0.87/day compared to $0.42/day for the Bitdeer SealMiner A3 Pro Hydro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21 XP Hyd or Bitdeer SealMiner A3 Pro Hydro?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S21 XP Hyd 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.
What is the efficiency difference between Bitmain Antminer S21 XP Hyd and Bitdeer SealMiner A3 Pro Hydro?
The Bitmain Antminer S21 XP Hyd runs at 12.0 J/TH while the Bitdeer SealMiner A3 Pro Hydro runs at 12.5 J/TH — a difference of 0.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
Compare Bitmain Antminer S21 XP Hyd with...
Compare Bitdeer SealMiner A3 Pro Hydro with...
- Bitdeer SealMiner A3 Pro Hydro vs Bitdeer SealMiner A2
- Bitdeer SealMiner A3 Pro Hydro vs Bitdeer SealMiner A2 Hyd
- Bitdeer SealMiner A3 Pro Hydro vs Bitdeer SealMiner A2 Pro Air
- Bitdeer SealMiner A3 Pro Hydro vs Bitdeer SealMiner A2 Pro Hyd
- Bitdeer SealMiner A3 Pro Hydro vs Bitdeer SealMiner A3 Air
- Bitdeer SealMiner A3 Pro Hydro vs Bitdeer SealMiner A3 Hydro