Bitmain Antminer S11 (20.5Th) vs Antminer T21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S11 (20.5Th) | Specification | Antminer T21 |
|---|---|---|
| 20.5 TH/s | Hashrate | 190.0 TH/s |
| 1,530 W | Power Consumption | 3,610 W |
| 74.6 J/TH | Efficiency | 19.0 J/TH |
| — | Noise Level | 75 dB |
| 6,500.0 kg | Weight | 14.6 kg |
| 5,220 BTU/hr | BTU Output | 12,317 BTU/hr |
| 28/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S11 (20.5Th)
Antminer T21
Based on BTC price of $70,957 and current network difficulty as of Mar 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer T21 wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). The Bitmain Antminer S11 (20.5Th) 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
Antminer T21Score: 30/100. 75 dB noise level.
Best for Efficiency
Antminer T2119.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S11 (20.5Th) or Antminer T21 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer T21 is more profitable at $-2.82/day compared to $-3.04/day for the Bitmain Antminer S11 (20.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S11 (20.5Th) or Antminer T21?
The Antminer T21 is quieter at 75 dB compared to the Bitmain Antminer S11 (20.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S11 (20.5Th) or Antminer T21?
The Antminer T21 scores 30/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer S11 (20.5Th)). 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 S11 (20.5Th) and Antminer T21?
The Bitmain Antminer S11 (20.5Th) runs at 74.6 J/TH while the Antminer T21 runs at 19.0 J/TH — a difference of 55.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.