Bitmain Antminer T21
- Hashrate
- 190 TH/s
- Power
- 3,610 W
- Efficiency
- 19 J/TH
- Noise
- 76 dB
Industrial Industrial (air) Rack / shelf Unknown
A lower-binned A14-generation air-cooled model. Canaan's A14 page lists 133 TH/s on a 3,600 W supply (27.1 J/TH), and its shop has 130 and 136 TH/s listings at about 3,300 W. It is one of the least efficient models here and is off sale at Canaan.
No store listings yet. Know where to buy it? Tell us.
The maker gives no hashrate for this mode, so we can't work out its mining income.
*What a pool would pay on average at today's difficulty, block reward and bitcoin price, before pool fees. Solo miners usually earn nothing, and very rarely a whole block. A plain electric heater turns the same electricity into the same heat, so the mining income is what makes the difference.
Payback is how long the bitcoin a device earns takes to add up to its price. It leaves out electricity, which buys the heat: compare earnings per kWh with your electricity price to see whether mining alone covers it. It uses the average of the last 3 months, to 12 Nov 2026: bitcoin at $79,558, 969 EH/s on the network and 3.15 BTC a block, less a 2% pool fee, for the hours you set. It cuts the block subsidy in half at each halving, the next around Apr 2028, and otherwise assumes those carry on unchanged, which they won't. Income at today's difficulty and price is about 17% below that average. Hashrate usually rises, though miners that stop paying after a halving may switch off, which leaves more for the rest. How we work it out.
| Brand | Canaan |
|---|---|
| Model | Avalon A1446 |
| SKU | — |
| Type | Industrial (air) · Industrial |
| Form factor | Rack / shelf |
| Cooling | Air |
| Production status | Unknown * |
| Launch date | — |
| Hashrate | 133 TH/s |
| Power consumption (stock) | 3,600 W |
| Mining efficiency | 27 J/TH |
| ASIC chip | Canaan A3198S (named by the device's maker) |
| Heat output | 12,284 BTU/h |
| Input voltage | 200–300 V AC |
| Frequency | — |
| Net dimensions (W × D × H) | 192 × 271 × 292 mm (7.6 × 10.7 × 11.5 in) |
| Net weight | 13 kg (28.7 lb) |
| Noise | — |
| Operating temperature | -5–35 °C (23–95 °F) |
| Area heated | About 24–72 m² (our estimate) |
| Colours | — |
| Company based in | Singapore |
| Made in | — |
* Not confirmed by the maker's own documents yet.
| Version | Hashrate | Power | Efficiency |
|---|---|---|---|
| 130 TH bin (Canaan shop) | 130 TH/s | 3,360 W | 26 J/TH |
| 133 TH (canaan.io) | 133 TH/s | 3,600 W | 27 J/TH |
| 136 TH (Canaan shop) | 136 TH/s | 3,310 W | 25 J/TH |
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Not yet confirmed from the maker's own documents: SKU; launch date; production status; frequency; noise; where it's made; colours; heat modes; store listings.
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