Antminer S19 vs Antminer S21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19 | Specification | Antminer S21 |
|---|---|---|
| 95.0 TH/s | Hashrate | 200.0 TH/s |
| 3,250 W | Power Consumption | 3,500 W |
| 34.2 J/TH | Efficiency | 17.5 J/TH |
| 75 dB | Noise Level | 75 dB |
| 14.4 kg | Weight | 14.6 kg |
| 11,089 BTU/hr | BTU Output | 11,942 BTU/hr |
| 84/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19
Antminer S21
Based on BTC price of $79,718 and current network difficulty as of May 8, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 wins on 2 of 5 factors (efficiency, hashrate). The Antminer S19 holds the edge in power consumption and home mining score and price-performance. 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 S19Score: 84/100. 75 dB noise level.
Best for Efficiency
Antminer S2117.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S19 or Antminer S21 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 is more profitable at $-0.83/day compared to $-4.21/day for the Antminer S19. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S19 or Antminer S21?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer S19 or Antminer S21?
The Antminer S19 scores 84/100 on our Home Mining Score (vs 36/100 for the Antminer S21). 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 S19 and Antminer S21?
The Antminer S19 runs at 34.2 J/TH while the Antminer S21 runs at 17.5 J/TH — a difference of 16.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.