Bitmain Antminer T21 model 10 dual-mode official reference
Bitmain Antminer S19j Pro multi-bin reference vs Bitmain Antminer T21 model 10 dual-mode official reference
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the Bitmain Antminer T21 model 10 dual-mode official reference is the stronger pick — Current-generation efficiency advantage even at the budget tier. The Bitmain Antminer S19j Pro multi-bin reference runs 84.0 TH/s at 29.5 J/TH; the Bitmain Antminer T21 model 10 dual-mode official reference runs 190.0 TH/s at 19.0 J/TH.
Specs verified against the D-Central Mining Bible \xc2\xb7 August 2026
Specifications Comparison
| Bitmain Antminer S19j Pro multi-bin reference | Specification | Bitmain Antminer T21 model 10 dual-mode official reference |
|---|---|---|
| 84.0 TH/s | Hashrate | 190.0 TH/s |
| 2,478 W | Power Consumption | 3,610 W |
| 29.5 J/TH | Efficiency | 19.0 J/TH |
| — | Noise Level | 76 dB |
| 14.6 kg | Weight | 17.0 kg |
| 8,455 BTU/hr | BTU Output | 12,317 BTU/hr |
| — | Home Mining Score | — |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S19j Pro multi-bin reference
Bitmain Antminer T21 model 10 dual-mode official reference
Based on BTC price of $79,651 and current network difficulty as of Aug 28, 2026. Actual results vary.
Verdict
The S19 generation's top performer versus the S21 generation's budget option. A cross-generation matchup that tests whether a budget new miner beats a premium old one.
The T21 wins on efficiency despite being the economy option of its generation. New silicon beats old regardless of tier. However, the S19j Pro can be found much cheaper on the secondary market.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S19j Pro multi-bin reference and Bitmain Antminer T21 model 10 dual-mode official reference sit on each measurable spec:
- Bitmain Antminer T21 model 10 dual-mode official reference 126% more hashrate (84.0 vs 190.0 TH/s)
- Bitmain Antminer S19j Pro multi-bin reference 31% better power draw (2,478 vs 3,610 W)
- Bitmain Antminer T21 model 10 dual-mode official reference 36% better efficiency (29.5 vs 19.0 J/TH)
- Bitmain Antminer S19j Pro multi-bin reference 14% better weight (14.6 vs 17.0 kg)
- Bitmain Antminer T21 model 10 dual-mode official reference 46% more heat output (8,455 vs 12,317 BTU/hr)
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 T21 model 10 dual-mode official reference19.0 J/TH — lower electricity cost per unit of hashrate.
Frequently Asked Questions
Is a used S19j Pro or a new T21 the better buy?
Depends on price. A very cheap S19j Pro can offer competitive ROI despite worse efficiency due to the lower capital outlay. Above $0.07/kWh electricity, the T21's efficiency makes it the safer long-term bet.
Which is better for space heating?
The S19j Pro draws more power and produces more heat, making it the better space heater. The T21 mines more BTC per watt consumed.
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