Bitmain Antminer S21
- Hashrate
- 200 TH/s
- Power
- 3,500 W
- Efficiency
- 17.5 J/TH
- Noise
- 76 dB
Industrial Industrial (air) Rack / shelf In production
A low-cost A14-generation air-cooled miner sold on Canaan's shop since late 2025. Bins of 150–154 TH/s draw about 3,500 W, or 21.5 J/TH, which is far less efficient than the A15 and A16 models but much cheaper to buy.
Best price $836
$5.43 per TH · New · In stock at Canaan Official Shop · excl. tax
| Store | Trustpilot | Condition | Availability | Listed price | In your currency | Per TH | Checked | Link |
|---|---|---|---|---|---|---|---|---|
| Canaan Official Shop Ships from China · Maker's own shop Canaan says the retail price excludes shipping, customs and taxes. | TrustScore 2.7 out of 5, 6 reviews | New | In stock | $836 excl. tax | $836 | $5.43 | 4 Nov 2026 | Visit |
| Canaan Official Shop Ships from China · Maker's own shop · 150 TH/s unit Shown as Sold Out. Canaan says the retail price excludes shipping, customs and taxes. | TrustScore 2.7 out of 5, 6 reviews | New | Out of stock | $825 excl. tax | $825 | $5.50 | 4 Nov 2026 | Visit |
| Canaan Official Shop Ships from China · Maker's own shop · 152 TH/s unit Shown as Sold Out. Canaan says the retail price excludes shipping, customs and taxes. | TrustScore 2.7 out of 5, 6 reviews | New | Out of stock | $836 excl. tax | $836 | $5.50 | 4 Nov 2026 | Visit |
Prices as listed on each store's page on the date shown, without shipping. Prices marked excl. tax leave out VAT or sales tax, and others may too. Per TH uses the hashrate of the unit each store sells. Converted at ECB rates of 11 Nov 2026. Trustpilot scores are for the store, not the device. Each store's name opens its page, with everything it sells and its reviews.
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 A14XP |
| SKU | — |
| Type | Industrial (air) · Industrial |
| Form factor | Rack / shelf |
| Cooling | Air |
| Production status | In production |
| Launch date | — |
| Hashrate | 154 TH/s |
| Power consumption (stock) | 3,500 W |
| Mining efficiency | 22 J/TH |
| ASIC chip | Canaan chip, part number not published |
| Heat output | 11,942 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 | — |
| Area heated | About 23–70 m² (our estimate) |
| Colours | — |
| Company based in | Singapore |
| Made in | — |
* Not confirmed by the maker's own documents yet.
| Version | Hashrate | Power | Efficiency |
|---|---|---|---|
| 150 TH bin | 150 TH/s | 3,500 W | 22 J/TH |
| 152 TH bin | 152 TH/s | 3,500 W | 22 J/TH |
| 154 TH bin | 154 TH/s | 3,500 W | 22 J/TH |
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Not yet confirmed from the maker's own documents: SKU; launch date; frequency; noise; operating temperature; where it's made; colours.
Spotted a mistake? Let us know.