Bitmain Antminer S21 XP 270TH/s – SHA-256 Bitcoin Air-Cooled Miner
Payment methods
- Bank transfer
- Interac e-Transfer
- Cryptocurrency
An itemized invoice, a named recipient and confirmation after funds are received.
Payment details and next steps
1. Bank transfer
Pay in Canadian dollars to our Scotiabank business account. The beneficiary name shown on our void cheque is CAPITAINE MINAGE INC.
- Beneficiary
- CAPITAINE MINAGE INC.
- Bank
- Scotiabank
- Currency
- CAD
- Transit / branch
- 71191
- Institution
- 002
- Account number
- 0129615
Include your invoice number as the payment reference. Our void cheque is available on request.
International wire or another currency? Request the instructions for your bank before sending funds.
2. Interac e-Transfer
Send your Interac e-Transfer to the address below and include your invoice number in the message.
info@captainmining.com
Your financial institution’s limits apply. For a larger amount, contact us to arrange a bank transfer.
3. Cryptocurrency
For each order, we confirm the cryptocurrency, network, exact amount, receiving address and quote validity period.
Request my crypto payment instructionsYour payment in 3 steps
- Review your invoice: equipment, amount, currency and agreed terms.
- Make your payment using your invoice number as the reference.
- We verify receipt of funds and confirm the next steps for your order.
Pay after receiving your invoice and confirmation of availability. Delivery or installation follows the timeline agreed for your order.
Credit and debit cards are not accepted.
First order? Check the details with our team.

Bitmain Antminer S21 XP 270T air-cooled Bitcoin miner
The Antminer S21 XP 270T is an air-cooled SHA-256 ASIC for Bitcoin mining. BITMAIN lists typical values of 270 TH/s, 3,645 W at 25°C and 13.5 J/TH. Actual hashrate can vary by ±3%, while wall power and efficiency can vary by ±5% under the manufacturer’s stated conditions.
| Algorithm / coins | SHA-256 / BTC, BCH, BSV |
|---|---|
| Typical hashrate | 270 TH/s |
| Typical wall power | 3,645 W at 25°C |
| Typical efficiency | 13.5 J/TH at 25°C |
| Input | 220–277 V AC, single phase, 20 A maximum |
| Network | RJ45 Ethernet 10/100M |
| Cooling / stated noise | Air cooling / 76 dBA at maximum fan speed |
Plan the installation before ordering
This is industrial air-cooled equipment. Confirm the circuit, connector, ventilation, heat rejection and acceptable sound level with a qualified installer. BITMAIN specifies an operating range of −20°C to 45°C, subject to its altitude guidance. Do not size the installation from hashrate alone.
What to confirm in the written quote
- Exact 270T model, condition, batch and manufacturer specification.
- Power cord, accessories and warranty terms included.
- Availability, dispatch estimate, transport, destination and applicable taxes.
- For hosting: model acceptance, setup, electricity billing, service scope and contract terms.
Mining revenue is not guaranteed and changes with network difficulty, coin price, pool fees, downtime and energy cost. Compare this model with other Bitcoin ASIC miners, review ASIC hosting, or request a model-specific written quote.
Technical source: BITMAIN S21 XP specifications.