Bitmain Antminer S21+
- Hashrate
- 216 TH/s
- Power
- 3,564 W
- Efficiency
- 16.5 J/TH
- Noise
- 76 dB
Industrial Industrial (air) Rack / shelf Unknown
The entry model of Canaan's A15 family, announced in November 2024 at 170–185 TH/s and 19.9 J/TH. It is not on Canaan's shop; a reseller lists 176 and 179 TH/s bins drawing about 3,500 W. Same loud air-cooled chassis as the other A15 units.
| Store | Trustpilot | Condition | Availability | Listed price | In your currency | Per TH | Checked | Link |
|---|---|---|---|---|---|---|---|---|
| Apexto 176 TH/s unit Available on backorder; $580-$590 depending on bin. Price from Apexto category listing (shown with $). Apexto lists warehouses in Hong Kong and the US. | TrustScore 4.5 out of 5, 167 reviews | New | Pre-order | $580 | $580 | $3.30 | 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 A15SE |
| SKU | — |
| Type | Industrial (air) · Industrial |
| Form factor | Rack / shelf |
| Cooling | Air |
| Production status | Unknown * |
| Launch date | Nov 2024 |
| Hashrate | 179 TH/s * |
| Power consumption (stock) | 3,562 W * |
| Mining efficiency | 19.9 J/TH |
| ASIC chip | Canaan A3197S (named by the device's maker) |
| Heat output | 12,154 BTU/h |
| Input voltage | — |
| Frequency | — |
| Net dimensions (W × D × H) | 192 × 301 × 292 mm (7.6 × 11.9 × 11.5 in) * |
| Net weight | 14.9 kg (32.8 lb) * |
| Noise | 75 dB * |
| Operating temperature | -5–35 °C (23–95 °F) * |
| Area heated | About 24–71 m² (our estimate) |
| Colours | — |
| Company based in | Singapore |
| Made in | — |
* Not confirmed by the maker's own documents yet.
| Version | Hashrate | Power | Efficiency |
|---|---|---|---|
| 176 TH bin | 176 TH/s | 3,502 W | 19.9 J/TH |
| 179 TH bin | 179 TH/s | 3,562 W | 19.9 J/TH |
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Not yet confirmed from the maker's own documents: SKU; maker's page; production status; hashrate; power; hashrate versions; input voltage; frequency; dimensions; weight; noise; operating temperature; where it's made; colours; images.
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