Antminer S21 Pro

Description

Antminer S21 Pro

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

The Antminer S21 Pro operates on the SHA-256 algorithm, making it ideal for mining Bitcoin (BTC) as well as other SHA-256 cryptocurrencies such as Bitcoin Cash (BCH) and Bitcoin SV (BSV). This miner delivers a maximum hashrate of about 234 TH/s while consuming approximately 3510W of power, achieving an efficiency of around 15 J/TH.

Built with Bitmain’s latest ASIC chip architecture, the S21 Pro significantly improves performance and efficiency compared to older S19-series miners. With over 230 TH/s hashing power and roughly 3.5 kW power consumption, it provides strong computing performance while helping mining farms reduce electricity costs per terahash.

The Antminer S21 Pro uses a high-performance air-cooling system with multiple fans to maintain stable temperatures during continuous mining workloads. The miner typically operates with a noise level around 75–76 dB, making it suitable for deployment in 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 450 × 219 × 293 mm and weighs around 18–20 kg, allowing it to be deployed easily in mining racks or large-scale mining farms.

With 234 TH/s SHA-256 hashing power, 3510W power consumption, and 15 J/TH efficiency, the Antminer S21 Pro offers a powerful and efficient solution for professional Bitcoin mining operations that require stable performance and improved energy efficiency.

Antminer S21 Pro – Technical Specifications

• Hashrate: 234 TH/s (Standard), 245 TH/s and 220 TH/s (Variants)
• Power Consumption: 3510W ± 5% (at 234 TH/s)
• Efficiency: 15.0 J/TH ± 5%
• Algorithm: SHA-256 (BTC/BCH/BSV)
• Chip: 5nm technology
• Cooling: Air-cooled with 4 high-speed fans (2 front, 2 back)
• Dimensions: 450 x 219 x 293 mm (without package)
• Weight: 18.5 kg (Net weight), 21.5 kg (Gross weight)
• Operating Temperature: -20°C to 45°C
• Humidity: 10% to 90% (non-condensing)
• Noise Level: 76 dB (typical at 30°C)
• Network Connection: RJ45 Ethernet 10/100M
• Voltage: 220V ~ 277V AC (Single-phase)

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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.