Bitmain Antminer S21 XP Immersion vs MicroBT Whatsminer M3
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 XP Immersion | Specification | MicroBT Whatsminer M3 |
|---|---|---|
| 300.0 TH/s | Hashrate | 12.0 TH/s |
| 4,050 W | Power Consumption | 2,000 W |
| 13.5 J/TH | Efficiency | 166.7 J/TH |
| 50 dB | Noise Level | — |
| 14.4 kg | Weight | 8,100.0 kg |
| 13,819 BTU/hr | BTU Output | 6,824 BTU/hr |
| 44/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S21 XP Immersion
MicroBT Whatsminer M3
Based on BTC price of $74,201 and current network difficulty as of Mar 18, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 XP Immersion wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). The MicroBT Whatsminer M3 holds the edge in power consumption. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitmain Antminer S21 XP ImmersionScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 XP Immersion13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 XP Immersion or MicroBT Whatsminer M3 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP Immersion is more profitable at $-0.07/day compared to $-4.41/day for the MicroBT Whatsminer M3. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21 XP Immersion or MicroBT Whatsminer M3?
The Bitmain Antminer S21 XP Immersion is quieter at 50 dB compared to the MicroBT Whatsminer M3 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S21 XP Immersion or MicroBT Whatsminer M3?
The Bitmain Antminer S21 XP Immersion scores 44/100 on our Home Mining Score (vs 28/100 for the MicroBT Whatsminer M3). 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 XP Immersion and MicroBT Whatsminer M3?
The Bitmain Antminer S21 XP Immersion runs at 13.5 J/TH while the MicroBT Whatsminer M3 runs at 166.7 J/TH — a difference of 153.2 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.