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 270TH/s – SHA-256 Bitcoin Air-Cooled Miner
The Antminer S21 XP is Bitmain's most powerful air-cooled Bitcoin ASIC miner, delivering a groundbreaking 270 TH/s of SHA-256 hashrate at only 3645W. With a remarkable efficiency of 13.5 J/TH, the Bitmain Antminer S21 XP sets a new industry benchmark for air-cooled Bitcoin mining. Available now in Canada at CaptainMining, it's the ideal choice for serious Bitcoin miners who want maximum performance without water or immersion cooling.
Antminer S21 XP 270TH/s Specifications
| Spec | Value |
|---|---|
| Model | Antminer S21 XP 270TH/s |
| Algorithm | SHA-256 (Bitcoin) |
| Hashrate | 270 TH/s |
| Power Consumption | 3645W |
| Efficiency | 13.5 J/TH |
| Cooling | Air Cooling |
| Noise Level | ~75 dB |
| Manufacturer | Bitmain |
Antminer S21 XP Noise Level & Cooling
One common question about the antminer s21 noise level db — like most high-performance air-cooled Bitcoin miners, the S21 XP operates at approximately 75 dB. This is typical for industrial-grade SHA-256 miners and is best suited for a dedicated mining facility, data center, or properly insulated mining room. For home mining setups with noise concerns, consider our hydro-cooled options or ASIC hosting service.
Antminer S21 XP Profitability in Canada
At 270 TH/s with 13.5 J/TH efficiency, the antminer s21 xp delivers exceptional mining profitability. Whether you're running solo or through a pool, the S21 XP's combination of high hashrate and energy efficiency ensures strong returns in the current Bitcoin market. Contact CaptainMining for a profitability analysis tailored to Canadian electricity rates.
Order your Antminer S21 XP 270TH/s today — Canada's trusted source for professional Bitcoin mining hardware.
Frequently Asked Questions
What is the Antminer S21 XP hashrate?
The Bitmain Antminer S21 XP delivers 270 TH/s on the SHA-256 algorithm, making it one of the highest-performing air-cooled Bitcoin miners available in 2026.
How efficient is the Antminer S21 XP?
The S21 XP achieves approximately 13.5 J/TH energy efficiency, representing a significant improvement over previous generation miners and reducing electricity costs per Bitcoin mined.
Can I mine Bitcoin profitably with the S21 XP in Canada?
Absolutely. Canada offers competitive electricity rates, and the S21 XP's high hashrate combined with excellent efficiency makes it very profitable. Captain Mining also offers hosting at $0.065/kWh for maximum returns.