Antminer T19 vs Antminer T21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer T19 | Specification | Antminer T21 |
|---|---|---|
| 84.0 TH/s | Hashrate | 190.0 TH/s |
| 3,150 W | Power Consumption | 3,610 W |
| 37.5 J/TH | Efficiency | 19.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 14.4 kg | Weight | 14.6 kg |
| 10,748 BTU/hr | BTU Output | 12,317 BTU/hr |
| 84/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer T19
Antminer T21
Based on BTC price of $74,306 and current network difficulty as of Mar 16, 2026. Actual results vary.
Verdict
Bitmain's budget mining line spans generations. The T19 was the entry-level option of the S19 era, while the T21 fills the same role for the S21 generation.
The T21 is dramatically more efficient than the T19. If buying new or even used, the T21 offers far better value. The T19 is now primarily useful as a space heater or for miners with near-free electricity.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer T19Score: 84/100. 75 dB noise level.
Best for Efficiency
Antminer T2119.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the T19 still profitable to run?
Only at very low electricity rates, typically below $0.05/kWh. At standard residential rates, the T19's efficiency makes it unprofitable as a pure miner. It can still serve as a space heater that earns some Bitcoin.
How much more efficient is the T21 than the T19?
The T21 is roughly 35-40% more efficient. This is a meaningful gap that significantly impacts daily operating costs and the electricity rate threshold for profitability.