Bitmain Antminer S21 Immersion (301Th)
Bitmain Antminer S21 Immersion (301Th) vs MicroBT Whatsminer M61
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (301Th) | Specification | MicroBT Whatsminer M61 |
|---|---|---|
| 301.0 TH/s | Taux de hachage | 200.0 TH/s |
| 5,569 W | Consommation électrique | 3,980 W |
| 18.5 J/TH | Efficiency | 19.9 J/TH |
| 50 dB | Niveau de bruit | 75 dB |
| 17.2 kg | Weight | 13.5 kg |
| 19,001 BTU/hr | BTU Output | 13,580 BTU/hr |
| 44/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S21 Immersion (301Th)
MicroBT Whatsminer M61
Based on BTC price of $78,183 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S21 Immersion (301Th) edges it: 4 of 6 factors go its way (efficacité, hashrate, score de minage domestique, niveau sonore). The standout gap is 51% more hashrate (301 vs 200 TH/s) in the Bitmain Antminer S21 Immersion (301Th)'s favour. The MicroBT Whatsminer M61 holds the edge in consommation électrique and rapport qualité-prix. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Bitmain Antminer S21 Immersion (301Th) and MicroBT Whatsminer M61 actually differ, with the gap quantified:
- Bitmain Antminer S21 Immersion (301Th) 51% more hashrate (301 vs 200 TH/s)
- MicroBT Whatsminer M61 29% better power draw (5,569 vs 3,980 W)
- Bitmain Antminer S21 Immersion (301Th) 7% better efficacité (18.5 vs 19.9 J/TH)
- Bitmain Antminer S21 Immersion (301Th) 33% better noise (50.0 vs 75.0 dB)
- MicroBT Whatsminer M61 21% better weight (17.2 vs 13.5 kg)
- Bitmain Antminer S21 Immersion (301Th) 40% more heat output (19,001 vs 13,580 BTU/hr)
- Bitmain Antminer S21 Immersion (301Th) 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 Immersion (301Th) | Metric | MicroBT Whatsminer M61 |
|---|---|---|
| $3,333 | Upfront cost (MSRP) | $2,200 |
| -$2.54 | Daily net profit | -$2.36 |
| -$4,258 | Net after 1 year | -$3,060 |
| -$5,184 | Net after 2 years | -$3,920 |
| -$6,109 | Net after 3 years | -$4,780 |
| 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 MicroBT Whatsminer M61: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M61 is more profitable at $-2.36/day compared to $-2.54/day for the Bitmain Antminer S21 Immersion (301Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S21 Immersion (301Th) or the MicroBT Whatsminer M61 better for noise-sensitive spaces?
The Bitmain Antminer S21 Immersion (301Th) is quieter at 50 dB compared to the MicroBT Whatsminer M61 at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S21 Immersion (301Th) vs MicroBT Whatsminer M61: which fits a residential setup better?
The Bitmain Antminer S21 Immersion (301Th) scores 44/100 on our Home Mining Score (vs 30/100 for the MicroBT Whatsminer M61). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S21 Immersion (301Th) vs MicroBT Whatsminer M61: how much does the efficiency gap matter?
The Bitmain Antminer S21 Immersion (301Th) runs at 18.5 J/TH while the MicroBT Whatsminer M61 runs at 19.9 J/TH — a difference of 1.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 7% better efficacité (18.5 vs 19.9 J/TH).
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