Bitmain Antminer S21 Immersion (227Th)
Bitmain Antminer S21+ Hyd vs Bitmain Antminer S21 Immersion (227Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21+ Hyd | Specification | Bitmain Antminer S21 Immersion (227Th) |
|---|---|---|
| 319.0 TH/s | Taux de hachage | 227.0 TH/s |
| 4,785 W | Consommation électrique | 3,623 W |
| 15.0 J/TH | Efficiency | 16.0 J/TH |
| 50 dB | Niveau de bruit | 75 dB |
| 17.5 kg | Weight | 17.2 kg |
| 16,326 BTU/hr | BTU Output | 12,362 BTU/hr |
| 44/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21+ Hyd
Bitmain Antminer S21 Immersion (227Th)
Based on BTC price of $78,235 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S21+ Hyd edges it: 5 of 6 factors go its way (efficacité, hashrate, score de minage domestique, niveau sonore, rapport qualité-prix). Where it pulls away hardest is 33% better noise (50.0 vs 75.0 dB). That said, the Bitmain Antminer S21 Immersion (227Th) isn't beaten everywhere — it still wins consommation électrique. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Bitmain Antminer S21+ Hyd and Bitmain Antminer S21 Immersion (227Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S21+ Hyd 41% more hashrate (319 vs 227 TH/s)
- Bitmain Antminer S21 Immersion (227Th) 24% better power draw (4,785 vs 3,623 W)
- Bitmain Antminer S21+ Hyd 6% better efficacité (15.0 vs 16.0 J/TH)
- Bitmain Antminer S21+ Hyd 33% better noise (50.0 vs 75.0 dB)
- Bitmain Antminer S21 Immersion (227Th) 2% better weight (17.5 vs 17.2 kg)
- Bitmain Antminer S21+ Hyd 32% more heat output (16,326 vs 12,362 BTU/hr)
- Bitmain Antminer S21+ Hyd 47% more score de minage domestique (44.0 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 S21+ Hyd | Metric | Bitmain Antminer S21 Immersion (227Th) |
|---|---|---|
| $2,499 | Upfront cost (MSRP) | $3,269 |
| $0.00 | Daily net profit | -$0.52 |
| -$2,499 | Net after 1 year | -$3,460 |
| -$2,498 | Net after 2 years | -$3,651 |
| -$2,498 | Net after 3 years | -$3,841 |
| Takes ~8,833.6 years to pay back at current rates | 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
Bitmain Antminer S21+ Hyd$0.52/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S21+ HydScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21+ Hyd15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S21+ Hyd vs Bitmain Antminer S21 Immersion (227Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21+ Hyd is more profitable at $0.00/day compared to $-0.52/day for the Bitmain Antminer S21 Immersion (227Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S21+ Hyd or the Bitmain Antminer S21 Immersion (227Th) better for noise-sensitive spaces?
The Bitmain Antminer S21+ Hyd is quieter at 50 dB compared to the Bitmain Antminer S21 Immersion (227Th) at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S21+ Hyd or Bitmain Antminer S21 Immersion (227Th)?
The Bitmain Antminer S21+ Hyd scores 44/100 on our Home Mining Score (vs 30/100 for the Bitmain Antminer S21 Immersion (227Th)). 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 Antminer S21+ Hyd and Bitmain Antminer S21 Immersion (227Th) on J/TH?
The Bitmain Antminer S21+ Hyd runs at 15.0 J/TH while the Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH — a difference of 1.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 6% better efficacité (15.0 vs 16.0 J/TH).
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