Antminer S21 Pro vs Bitmain Antminer S7
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 Pro | Specification | Bitmain Antminer S7 |
|---|---|---|
| 234.0 TH/s | Hashrate | 4.7 TH/s |
| 3,510 W | Power Consumption | 1,293 W |
| 15.0 J/TH | Efficiency | 273.4 J/TH |
| 75 dB | Noise Level | — |
| 15.0 kg | Weight | 3,900.0 kg |
| 11,976 BTU/hr | BTU Output | 4,412 BTU/hr |
| 30/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S21 Pro
Bitmain Antminer S7
Based on BTC price of $69,381 and current network difficulty as of Mar 24, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 Pro wins on 3 of 5 factors (efficiency, hashrate, noise level). The Bitmain Antminer S7 holds the edge in power consumption and home mining score. 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 S7Score: 31/100. 0 dB noise level.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S21 Pro or Bitmain Antminer S7 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $-1.39/day compared to $-2.96/day for the Bitmain Antminer S7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S21 Pro or Bitmain Antminer S7?
The Antminer S21 Pro is quieter at 75 dB compared to the Bitmain Antminer S7 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S21 Pro or Bitmain Antminer S7?
The Bitmain Antminer S7 scores 31/100 on our Home Mining Score (vs 30/100 for the Antminer S21 Pro). 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 S21 Pro and Bitmain Antminer S7?
The Antminer S21 Pro runs at 15.0 J/TH while the Bitmain Antminer S7 runs at 273.4 J/TH — a difference of 258.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.