Antminer S19j Pro vs MicroBT Whatsminer M21S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19j Pro | Specification | MicroBT Whatsminer M21S |
|---|---|---|
| 100.0 TH/s | Hashrate | 56.0 TH/s |
| 3,050 W | Power Consumption | 3,360 W |
| 30.5 J/TH | Efficiency | 60.0 J/TH |
| 75 dB | Noise Level | — |
| 13.2 kg | Weight | 12,500.0 kg |
| 10,407 BTU/hr | BTU Output | 11,464 BTU/hr |
| 84/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Antminer S19j Pro
MicroBT Whatsminer M21S
Based on BTC price of $77,422 and current network difficulty as of Apr 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S19j Pro wins on 5 of 6 factors (efficiency, hashrate, power consumption, home mining score, noise level). The MicroBT Whatsminer M21S holds the edge in 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 S19j ProScore: 84/100. 75 dB noise level.
Best for Efficiency
Antminer S19j Pro30.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S19j Pro or MicroBT Whatsminer M21S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S19j Pro is more profitable at $-3.73/day compared to $-6.05/day for the MicroBT Whatsminer M21S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S19j Pro or MicroBT Whatsminer M21S?
The Antminer S19j Pro is quieter at 75 dB compared to the MicroBT Whatsminer M21S at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S19j Pro or MicroBT Whatsminer M21S?
The Antminer S19j Pro scores 84/100 on our Home Mining Score (vs 22/100 for the MicroBT Whatsminer M21S). 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 S19j Pro and MicroBT Whatsminer M21S?
The Antminer S19j Pro runs at 30.5 J/TH while the MicroBT Whatsminer M21S runs at 60.0 J/TH — a difference of 29.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.