Bitmain Antminer S21 Immersion (227Th)
Bitmain Antminer S21 Immersion (227Th) vs Bitmain Antminer S23
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (227Th) | Specification | Bitmain Antminer S23 |
|---|---|---|
| 227.0 TH/s | Taux de hachage | 318.0 TH/s |
| 3,623 W | Consommation électrique | 3,498 W |
| 16.0 J/TH | Efficiency | 11.0 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 17.2 kg | Weight | 14.5 kg |
| 12,362 BTU/hr | BTU Output | 11,935 BTU/hr |
| 30/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21 Immersion (227Th)
Bitmain Antminer S23
Based on BTC price of $78,190 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitmain Antminer S23 comes out ahead — it takes 4 of 5 (efficacité, hashrate, consommation électrique, score de minage domestique). Where it pulls away hardest is 31% better efficacité (16.0 vs 11.0 J/TH). That said, the Bitmain Antminer S21 Immersion (227Th) isn't beaten everywhere — it still wins rapport qualité-prix. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S21 Immersion (227Th) and Bitmain Antminer S23 sit on each measurable spec:
- Bitmain Antminer S23 40% more hashrate (227 vs 318 TH/s)
- Bitmain Antminer S23 3% better power draw (3,623 vs 3,498 W)
- Bitmain Antminer S23 31% better efficacité (16.0 vs 11.0 J/TH)
- Bitmain Antminer S23 15% better weight (17.2 vs 14.5 kg)
- Bitmain Antminer S21 Immersion (227Th) 4% more heat output (12,362 vs 11,935 BTU/hr)
- Bitmain Antminer S23 20% more score de minage domestique (30.0 vs 36.0)
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 Immersion (227Th) | Metric | Bitmain Antminer S23 |
|---|---|---|
| $3,269 | Upfront cost (MSRP) | $4,999 |
| -$0.53 | Daily net profit | $3.05 |
| -$3,461 | Net after 1 year | -$3,887 |
| -$3,654 | Net after 2 years | -$2,775 |
| -$3,846 | Net after 3 years | -$1,663 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~4.5 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
Bitmain Antminer S23$3.57/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S23Score: 36/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer S2311.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer S21 Immersion (227Th) or the Bitmain Antminer S23?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S23 is more profitable at $3.05/day compared to $-0.53/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.
Which is quieter, the Bitmain Antminer S21 Immersion (227Th) or Bitmain Antminer S23?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Bitmain Antminer S21 Immersion (227Th) or the Bitmain Antminer S23?
The Bitmain Antminer S23 scores 36/100 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.
What is the efficiency difference between Bitmain Antminer S21 Immersion (227Th) and Bitmain Antminer S23?
The Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH while the Bitmain Antminer S23 runs at 11.0 J/TH — a difference of 5.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 31% better efficacité (16.0 vs 11.0 J/TH).
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