Bitmain Antminer S21 (200Th) vs Whatsminer M63S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 (200Th) | Specification | Whatsminer M63S |
|---|---|---|
| 200.0 TH/s | Hashrate | 390.0 TH/s |
| 3,550 W | Power Consumption | 7,215 W |
| 17.8 J/TH | Efficiency | 18.5 J/TH |
| — | Noise Level | 50 dB |
| 14.2 kg | Weight | 28.0 kg |
| 12,113 BTU/hr | BTU Output | 24,618 BTU/hr |
| 16/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S21 (200Th)
Whatsminer M63S
Based on BTC price of $71,183 and current network difficulty as of Mar 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 (200Th) wins on 3 of 6 factors (efficiency, power consumption, price-performance). The Whatsminer M63S holds the edge in hashrate and home mining score and noise level. 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
Whatsminer M63SScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 (200Th)17.8 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 (200Th) or Whatsminer M63S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 (200Th) is more profitable at $-2.35/day compared to $-5.28/day for the Whatsminer M63S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21 (200Th) or Whatsminer M63S?
The Whatsminer M63S is quieter at 50 dB compared to the Bitmain Antminer S21 (200Th) 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 (200Th) or Whatsminer M63S?
The Whatsminer M63S scores 44/100 on our Home Mining Score (vs 16/100 for the Bitmain Antminer S21 (200Th)). 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 (200Th) and Whatsminer M63S?
The Bitmain Antminer S21 (200Th) runs at 17.8 J/TH while the Whatsminer M63S runs at 18.5 J/TH — a difference of 0.8 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.