Bitmain Antminer T19 (84Th) vs MicroBT Whatsminer M21S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer T19 (84Th) | Specification | MicroBT Whatsminer M21S |
|---|---|---|
| 84.0 TH/s | Hashrate | 56.0 TH/s |
| 3,150 W | Power Consumption | 3,360 W |
| 37.5 J/TH | Efficiency | 60.0 J/TH |
| — | Noise Level | — |
| 14,200.0 kg | Weight | 12,500.0 kg |
| 10,748 BTU/hr | BTU Output | 11,464 BTU/hr |
| 22/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer T19 (84Th)
MicroBT Whatsminer M21S
Based on BTC price of $79,071 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer T19 (84Th) wins on 4 of 4 factors (efficiency, hashrate, power consumption, price-performance). The standout gap is 38% better efficiency (37.5 vs 60.0 J/TH) in the Bitmain Antminer T19 (84Th)'s favour. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer T19 (84Th) and MicroBT Whatsminer M21S sit on each measurable spec:
- Bitmain Antminer T19 (84Th) 50% more hashrate (84.0 vs 56.0 TH/s)
- Bitmain Antminer T19 (84Th) 6% better power draw (3,150 vs 3,360 W)
- Bitmain Antminer T19 (84Th) 38% better efficiency (37.5 vs 60.0 J/TH)
- MicroBT Whatsminer M21S 12% better weight (14,200 vs 12,500 kg)
- MicroBT Whatsminer M21S 7% more heat output (10,748 vs 11,464 BTU/hr)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Bitmain Antminer T19 (84Th) | Metric | MicroBT Whatsminer M21S |
|---|---|---|
| $179 | Upfront cost (MSRP) | $650 |
| -$4.41 | Daily net profit | -$5.96 |
| -$1,788 | Net after 1 year | -$2,826 |
| -$3,397 | Net after 2 years | -$5,003 |
| -$5,006 | Net after 3 years | -$7,179 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain Antminer T19 (84Th)37.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer T19 (84Th) or the MicroBT Whatsminer M21S?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer T19 (84Th) is more profitable at $-4.41/day compared to $-5.96/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 Bitmain Antminer T19 (84Th) or MicroBT Whatsminer M21S?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Bitmain Antminer T19 (84Th) vs MicroBT Whatsminer M21S: which fits a residential setup better?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Bitmain Antminer T19 (84Th) and MicroBT Whatsminer M21S?
The Bitmain Antminer T19 (84Th) runs at 37.5 J/TH while the MicroBT Whatsminer M21S runs at 60.0 J/TH — a difference of 22.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 38% better efficiency (37.5 vs 60.0 J/TH).