Antminer S21

Description

Antminer S21

Are you looking for a powerful and efficient Bitcoin miner for modern mining operations? The Antminer S21 from Bitmain is a high-performance SHA-256 ASIC miner designed to deliver strong hashing power while maintaining improved energy efficiency compared to earlier generations of Bitcoin mining hardware.

The Antminer S21 operates on the SHA-256 algorithm, making it suitable for mining Bitcoin (BTC) and other SHA-256 cryptocurrencies such as Bitcoin Cash (BCH) and Bitcoin SV (BSV). This miner delivers a maximum hashrate of around 200 TH/s while consuming approximately 3500W of power, resulting in an energy efficiency of about 17.5 J/TH.

Built with Bitmain’s advanced ASIC chip architecture, the S21 offers significantly improved efficiency compared to older models such as the S19 series. With 200 TH/s hashing power and about 3.5 kW power consumption, it provides strong computing performance while helping mining farms reduce electricity costs per terahash.

The Antminer S21 uses a high-performance air-cooling system with four cooling fans to maintain stable temperatures during continuous mining workloads. It typically operates with a noise level around 75 dB, making it suitable for professional mining facilities or well-ventilated environments.

The unit supports 220–277V power input and connects through a standard RJ45 Ethernet interface for network communication and remote management. The miner measures approximately 400 × 195 × 290 mm and weighs about 15 kg, allowing easy deployment in mining racks or large-scale mining farms.

With 200 TH/s SHA-256 hashing power, 3500W power consumption, and 17.5 J/TH efficiency, the Antminer S21 provides a reliable and efficient solution for modern Bitcoin mining operations that require stable performance and optimized energy usage.

Antminer S21 – Technical Specifications

• Hashrate: 200 TH/s
• Power Consumption: 3500 Watts (Typical)
• Efficiency: 17.5 J/TH
• Algorithm: SHA-256
• Chip: BM1368
• Cooling: Air-cooled (2-4 fans)
• Dimensions: 400 x 195 x 290 mm
• Weight: 15.4 kg
• Operating Temp: 0 ~ 45 °C
• Humidity: 10% ~ 90% (non-condensing)
• Noise Level: 76 dB
• Network Connection: RJ45 Ethernet 10/100M
• Voltage: 220 ~ 277V AC

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Notes

• Payment accepted in USDT, USDC, BTC, or USD. The unit price and total price of the products, and the amount paid are denominated in U.S. dollars.
• The shipping costs, customs charges, and taxes(if any) are not included in the retail price shown above.
• After an order has been submitted, a request to cancel the order, refund any part of the ordered amount or change the ordered item(s) to different item(s) or different batch(es) will not be entertained by BITMAIN.
• The pictures shown are for reference only; the final shipment version shall prevail.
• The Hashrate value, Power on wall, and Power efficiency on wall are all typical values, The actual Hashrate value fluctuates by ±3%, and the actual Power on wall and Power efficiency on wall fluctuate by ±5%.
• Caution: Wrong input voltage may probably cause product damaged.

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Shipping Details

• Shipments will be scheduled on a first-paid-first-ship basis for orders on which BITMAIN has received full payment.
• You are responsible for any customs delays or returned shipments due to a lack of proper documentation. It’s highly recommended to be aware of local customs clearance policies and to prepare all customs documentation ahead of time to avoid any customs clearance delays or unexpected costs.

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Warranty

• A 365-day warranty is provided starting from the shipping date. BITMAIN will cover shipping costs when shipping a replacement unit within the warranty period.
• The warranty only applies to the original purchaser who purchased the machine directly from BITMAIN. Once the miner is resold, warranty coverage becomes the responsibility of the re-seller.
• If the user fails to use the product per the given instructions, specifications, and conditions provided or changes the function settings of the unit without BITMAIN’s prior consent, BITMAIN will not be liable for any damage arising there from.