Bitmain Antminer S21 Immersion (301Th)
Bitmain Antminer S21 Immersion (301Th) vs Whatsminer M30S+
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (301Th) | Specification | Whatsminer M30S+ |
|---|---|---|
| 301.0 TH/s | Taux de hachage | 100.0 TH/s |
| 5,569 W | Consommation électrique | 3,400 W |
| 18.5 J/TH | Efficiency | 34.0 J/TH |
| 50 dB | Niveau de bruit | 75 dB |
| 17.2 kg | Weight | 11.5 kg |
| 19,001 BTU/hr | BTU Output | 11,601 BTU/hr |
| 44/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S21 Immersion (301Th)
Whatsminer M30S+
Based on BTC price of $63,866 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S21 Immersion (301Th) edges it: 5 of 6 factors go its way (efficacité, hashrate, score de minage domestique, niveau sonore, rapport qualité-prix). Its biggest concrete edge: 201% more hashrate (301 vs 100 TH/s). The Whatsminer M30S+ claws back ground on consommation électrique. 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 S21 Immersion (301Th) and Whatsminer M30S+ actually differ, with the gap quantified:
- Bitmain Antminer S21 Immersion (301Th) 201% more hashrate (301 vs 100 TH/s)
- Whatsminer M30S+ 39% better power draw (5,569 vs 3,400 W)
- Bitmain Antminer S21 Immersion (301Th) 46% better efficacité (18.5 vs 34.0 J/TH)
- Bitmain Antminer S21 Immersion (301Th) 33% better noise (50.0 vs 75.0 dB)
- Whatsminer M30S+ 33% better weight (17.2 vs 11.5 kg)
- Bitmain Antminer S21 Immersion (301Th) 64% more heat output (19,001 vs 11,601 BTU/hr)
- Bitmain Antminer S21 Immersion (301Th) 22% more score de minage domestique (44.0 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 (301Th) | Metric | Whatsminer M30S+ |
|---|---|---|
| $3,333 | Upfront cost (MSRP) | $1,800 |
| -$4.67 | Daily net profit | -$5.27 |
| -$5,037 | Net after 1 year | -$3,724 |
| -$6,741 | Net after 2 years | -$5,648 |
| -$8,445 | Net after 3 years | -$7,571 |
| 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
Bitmain Antminer S21 Immersion (301Th)Score: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Immersion (301Th)18.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S21 Immersion (301Th) vs Whatsminer M30S+: 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 $-4.67/day compared to $-5.27/day for the Whatsminer M30S+. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S21 Immersion (301Th) vs Whatsminer M30S+: which runs at a lower noise level?
The Bitmain Antminer S21 Immersion (301Th) is quieter at 50 dB compared to the Whatsminer M30S+ at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S21 Immersion (301Th) vs Whatsminer M30S+: which fits a residential setup better?
The Bitmain Antminer S21 Immersion (301Th) scores 44/100 on our Home Mining Score (vs 36/100 for the Whatsminer M30S+). 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 (301Th) and Whatsminer M30S+?
The Bitmain Antminer S21 Immersion (301Th) runs at 18.5 J/TH while the Whatsminer M30S+ runs at 34.0 J/TH — a difference of 15.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 46% better efficacité (18.5 vs 34.0 J/TH).
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