Bitmain Antminer S21 Immersion (301Th)
Antminer S19j vs Bitmain Antminer S21 Immersion (301Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19j | Specification | Bitmain Antminer S21 Immersion (301Th) |
|---|---|---|
| 90.0 TH/s | Taux de hachage | 301.0 TH/s |
| 3,100 W | Consommation électrique | 5,569 W |
| 34.4 J/TH | Efficiency | 18.5 J/TH |
| 75 dB | Niveau de bruit | 50 dB |
| 13.0 kg | Weight | 17.2 kg |
| 10,577 BTU/hr | BTU Output | 19,001 BTU/hr |
| 84/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19j
Bitmain Antminer S21 Immersion (301Th)
Based on BTC price of $78,230 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer S21 Immersion (301Th), which leads on 4 of 6 weighted factors (efficacité, hashrate, niveau sonore, rapport qualité-prix). The standout gap is 234% more hashrate (90.0 vs 301.0 TH/s) in the Bitmain Antminer S21 Immersion (301Th)'s favour. The Antminer S19j holds the edge in consommation électrique and score de minage domestique. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer S19j and Bitmain Antminer S21 Immersion (301Th) actually differ, with the gap quantified:
- Bitmain Antminer S21 Immersion (301Th) 234% more hashrate (90.0 vs 301.0 TH/s)
- Antminer S19j 44% better power draw (3,100 vs 5,569 W)
- Bitmain Antminer S21 Immersion (301Th) 46% better efficacité (34.4 vs 18.5 J/TH)
- Bitmain Antminer S21 Immersion (301Th) 33% better noise (75.0 vs 50.0 dB)
- Antminer S19j 24% better weight (13.0 vs 17.2 kg)
- Bitmain Antminer S21 Immersion (301Th) 80% more heat output (10,577 vs 19,001 BTU/hr)
- Antminer S19j 91% more score de minage domestique (84.0 vs 44.0)
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.
| Antminer S19j | Metric | Bitmain Antminer S21 Immersion (301Th) |
|---|---|---|
| $2,000 | Upfront cost (MSRP) | $3,333 |
| -$4.20 | Daily net profit | -$2.53 |
| -$3,533 | Net after 1 year | -$4,256 |
| -$5,066 | Net after 2 years | -$5,179 |
| -$6,599 | Net after 3 years | -$6,102 |
| Does not pay back at current rates (negative daily profit) | 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
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer S19jScore: 84/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Immersion (301Th)18.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer S19j vs Bitmain Antminer S21 Immersion (301Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Immersion (301Th) is more profitable at $-2.53/day compared to $-4.20/day for the Antminer S19j. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer S19j or the Bitmain Antminer S21 Immersion (301Th) better for noise-sensitive spaces?
The Bitmain Antminer S21 Immersion (301Th) is quieter at 50 dB compared to the Antminer S19j at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Antminer S19j vs Bitmain Antminer S21 Immersion (301Th): which fits a residential setup better?
The Antminer S19j scores 84/100 on our Home Mining Score (vs 44/100 for the Bitmain Antminer S21 Immersion (301Th)). 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 Antminer S19j and Bitmain Antminer S21 Immersion (301Th)?
The Antminer S19j runs at 34.4 J/TH while the Bitmain Antminer S21 Immersion (301Th) runs at 18.5 J/TH — a difference of 15.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 46% better efficacité (34.4 vs 18.5 J/TH).
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