The BITMAIN Antminer S21 XP 270 TH/s is an air-cooled SHA-256 ASIC miner for Bitcoin and compatible BCH/BSV mining pools. Its typical output is 270 TH/s at 3645 W, with an energy efficiency of 13.5 J/TH under BITMAIN's reference conditions.
Product condition and availability
Condition: Brand new. Available to order — Hong Kong supplier stock. Not held locally. Allow 1–2 business days processing after verified payment plus 5–8 business days delivery to South African addresses, under our Shipping Policy. We confirm supplier allocation during order processing. This listing is for the S21 XP 270 TH/s air-cooled configuration.
Technical specifications
| Manufacturer / model |
BITMAIN Antminer S21 XP |
| Algorithm / compatible coins |
SHA-256 / BTC, BCH, BSV |
| Typical hashrate |
270 TH/s (±3%) |
| Typical power at the wall |
3645 W (±5%), at 25°C inlet air |
| Typical efficiency |
13.5 J/TH (±5%), at 25°C inlet air |
| Electrical supply |
220–277 V AC, single phase, 50–60 Hz; maximum input current 20 A |
| Cooling / connection |
Air cooling / RJ45 Ethernet 10/100M |
| Size / net weight |
Approximately 450 × 219 × 293 mm (unpacked); 18.7 kg |
| Noise |
76 dBA with fans at maximum speed |
| Operating environment |
−20°C to 45°C; 10–90% relative humidity, non-condensing; altitude up to 2000 m |
At altitudes above 900 m, BITMAIN reduces the maximum operating temperature by 1°C for each additional 300 m. Actual performance varies with operating conditions. BITMAIN's exact S21 XP 270 TH/s product specifications and technical support reference.
Mining results and installation
Mining income and profitability are not guaranteed. Results depend on coin prices, network difficulty, electricity costs, pool fees, uptime and operating conditions. This purchase is mining hardware; it does not include hosting, electricity or a mining-pool service.
This miner produces substantial heat and noise and needs a suitably ventilated mining space. It is not suitable for a bedroom or living room. Arrange a qualified electrical assessment for the continuous load and the required supply before installation. It does not operate on 110 V. The S21 XP is a distinct model from the S21+ and S21 Pro.
Package contents and required equipment
- One BITMAIN Antminer S21 XP 270 TH/s miner.
- Power supply: Included in the selling price.
-
Power cables: Not included. Compatible power cables must be purchased separately.
Confirm any additional installation equipment you require before ordering. Package inclusions do not establish warranty coverage.
Dispatch, delivery and price
Dispatch location: Hong Kong. Delivery to South African addresses only. Allow 1–2 business days processing after verified payment, plus 5–8 business days for shipping and delivery, 6–10 business days in total, under the payment cutoff and handling schedule in our Shipping Policy. Supplier dispatch is not the date of delivery in South Africa.
If we cannot supply your miner from Hong Kong or meet the stated delivery estimate, we will contact you before dispatch with available options, including cancellation and a refund for an unfulfilled order. The displayed selling price is in rand and includes VAT and import duties. Delivery charges, where applicable under our Shipping Policy, are shown before payment.
Manufacturer warranty and Dawin support
BITMAIN publishes a general 365-day warranty for new S19-and-later Bitcoin miners, measured from BITMAIN's official shipment date and subject to the sales contract. Its S21 XP product terms limit direct manufacturer coverage to the original purchaser buying from BITMAIN and make reseller coverage the reseller's responsibility. A resale does not restart that period.
Manufacturer coverage for your supplied unit is not yet verified. We do not promise a fresh 12-month manufacturer warranty from your delivery date. Any confirmed additional manufacturer or supplier cover, including its remaining duration, claim process and freight terms, will be set out on the listing or in your written quotation before purchase. Dawin does not include an additional voluntary commercial miner warranty.
Read BITMAIN's Product Warranty policy and use its serial-number warranty check to check a particular unit. Manufacturer conditions apply to manufacturer cover; they do not replace Dawin's statutory obligations.
Statutory rights and returns
Where the South African Consumer Protection Act applies, its six-month implied warranty of quality is separate from any manufacturer or supplier cover. If goods fail the section 55 standards within six months after delivery, you may return them to Dawin at Dawin's risk and expense and choose repair, replacement or refund as provided by section 56. Statutory claims go directly to Dawin and do not depend on manufacturer approval. If a statutory repair fails or a further defect arises within three months after repair, the Act provides for replacement or refund.
For a change-of-mind return, notify us within 7 calendar days after delivery. Returns are arranged to Dawin at 63 Wilson Street, Fairlands, Johannesburg, Gauteng, 2170, South Africa; you pay only lawful direct return costs where applicable. Unopened-packaging conditions do not override statutory rights. No overseas shipment is required for a change-of-mind return. Existing agreed rights remain unaffected.
Contact dave@dcmining.co.za before returning goods. See our Refund and Return Policy, Miner Warranty & Support and Terms of Service for the full arrangements, statutory exceptions and any optional repair quotation.
