Bitmain Antminer S19j Pro (100Th) vs Antminer S21 Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19j Pro (100Th) | Specification | Antminer S21 Pro |
|---|---|---|
| 100.0 TH/s | Hashrate | 234.0 TH/s |
| 3,050 W | Power Consumption | 3,510 W |
| 30.5 J/TH | Efficiency | 15.0 J/TH |
| — | Noise Level | 75 dB |
| 13,200.0 kg | Weight | 15.0 kg |
| 10,407 BTU/hr | BTU Output | 11,976 BTU/hr |
| 22/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S19j Pro (100Th)
Antminer S21 Pro
Based on BTC price of $79,223 and current network difficulty as of Apr 27, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 Pro wins on 4 of 6 factors (efficiency, hashrate, home mining score, noise level). The Bitmain Antminer S19j Pro (100Th) holds the edge in power consumption 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
Antminer S21 Pro$3.82/day higher profit at current rates.
Best for Home Mining
Antminer S21 ProScore: 30/100. 75 dB noise level.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S19j Pro (100Th) or Antminer S21 Pro more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $0.17/day compared to $-3.65/day for the Bitmain Antminer S19j Pro (100Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S19j Pro (100Th) or Antminer S21 Pro?
The Antminer S21 Pro is quieter at 75 dB compared to the Bitmain Antminer S19j Pro (100Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S19j Pro (100Th) or Antminer S21 Pro?
The Antminer S21 Pro scores 30/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer S19j Pro (100Th)). 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 S19j Pro (100Th) and Antminer S21 Pro?
The Bitmain Antminer S19j Pro (100Th) runs at 30.5 J/TH while the Antminer S21 Pro runs at 15.0 J/TH — a difference of 15.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.