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Power
3564W
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Hashrate
216.00 TH/s
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Efficiency
16.5 J/T
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Algorithm
SHA-256
Bitmain Antminer S21+ Bitcoin Miner 216TH/S | BT-MINERS
from US$2,390.00
Top Hashrate : Up to 100% better than the previous generation
High Stability : Supports 24/7 continuous operation
Warranty : Come with 6-month factory warranty.
S21+ Profitability Calculate
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Description
Antminer S21+ 216T Description
Model Antminer S21+ (216Th) from Bitmain mining SHA-256 algorithm with a maximum hashrate of 216Th/s for a power consumption of 3564W.
For Brand NEW Miner, Bitmain Provides 365 days of factory warranty.
Technical Specifications
| Product Glance | Value |
|---|---|
| Model | S21+ |
| Crypto algorithm/coins | SHA-256|BTC/FB/NMC |
| Typical hashrate | 216.00 TH/s |
| Power on wall @35℃, Watt | 3564W |
| Power efficiency on wall@35℃ | 16.5J/TH |
| Detailed Characteristics | Value |
|---|---|
| Power Supply | |
| Phase | 1 |
| Input voltage, Volt | 220~277 |
| Input frequency range, Hz | 50~60 |
| Input max current, Amp | 20 |
| Hardware Configuration | |
| Networking connection mode | RJ45 Ethernet 10/100M |
| Server size(length*width*height, w/o package), mm | 450*219*293 |
| Server size(length*width*height, with package), mm | 450*219*293 |
| Net weight, kg | 21.5 |
| Gross weight, kg | 21.5 |
| Noise@30℃, dBA | 21.5 |
| Environment Requirements | Value |
|---|---|
| Storage temperature, °C | -20~70 |
| Operation humidity(non-condensing), RH | 10~90% |
| Operation temperature,°C | -20~45 |
| Operation altitude, m | ≤2000 |
| What's in the Box | Value |
|---|---|
| Original factory mining machinery | ✓ |
| Power supply | ✓ |
| Shockproof packaging | ✓ |
Notes
(1) 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%.
(2) Caution: Wrong input voltage may cause server damaged.
(3) The noise is loudest when the fan is under maximum RPM(rotation per minute).
(4) When the server is used at an altitude from 900m to 2000m, the highest operating temperature decreases by 1℃ for every increase of 300m.
Estimate time
Please select your preferred product batch – Available Now (In Stock) for immediate shipment or Month Batch for delivery within your chosen timeframe. If no selection is needed, the product is in stock and ready to ship. If you haven’t received your miner after the estimated time, please contact us at store@bt-miners.com, and our team will assist you promptly.
Shipping
All used miners will undergo testing by our certified technicians before shipping, which requires 3-5 business days. New miners will be shipped from our Shenzhen or Hong Kong warehouse, with international delivery taking approximately 5-10 business days via DHL. Once your order is shipped, you will receive a confirmation email with a tracking number. Shipping fees are calculated based on product type and weight, varying by region.
Returning policy
All sales are final and non-refundable after shipment, but we offer repair and replacement services if there are technical issues with your miner.
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Antminer S21+ Description
The Bitmain Antminer S21 216TH is engineered for miners who need consistent, high-capacity SHA-256 performance in a stable and efficient package. With its 216 TH/s hashrate, the S21 delivers strong Bitcoin mining output while maintaining optimized energy consumption, making it suitable for a wide range of mining setups from mid-size operations to full-scale farms.
Its dual-fan air-cooled system is built for reliable 24/7 mining, provided the unit is installed in a clean, well-ventilated space with controlled ambient temperatures. The miner uses standard industrial power input and Ethernet connectivity, ensuring seamless integration into most existing infrastructures without the need for complex modifications.
The S21 series is recognized for its consistent hashrate performance, dependable thermal behavior, and durable construction, making it a strong option for miners upgrading from older S19 or early-generation S21 models.
Bitmain’s Legacy and the Antminer Series
Bitmain has long been recognized as one of the most influential companies in the global cryptocurrency mining industry. Established in 2013, the company quickly became a pioneer in the development of high-performance ASIC mining hardware. Over the years, Bitmain’s engineering breakthroughs have shaped the evolution of blockchain mining, helping miners achieve higher profitability, lower energy consumption, and unprecedented operational efficiency.
At the core of Bitmain’s success is its legendary Antminer series—a lineup of ASIC miners covering major algorithms such as SHA-256, Equihash, Scrypt, Kadena, and more. Antminers are known worldwide for their stability, durability, and competitive edge in mining performance. The product line has produced some of the most iconic models in mining history, including the Antminer S9, S19 Pro, L7, Z15, and the latest next-generation units such as the S21 and Z15 Pro.
Each Antminer generation not only improves hashing efficiency but also introduces advanced chip architecture, enhanced cooling systems, and optimized firmware designed for 24/7 operation. The series has become the global standard for both home miners and industrial-scale mining farms, offering unmatched reliability and long-term performance.
Today, Bitmain continues to push the boundaries of ASIC technology, developing miners that deliver higher output with lower power consumption. The company’s commitment to quality and innovation has solidified the Antminer brand as the benchmark of professional cryptocurrency mining—trusted by millions of miners across the world.
Antminer S21 216TH vs S21 Pro
Antminer S21 216TH offers balanced performance with stable air-cooled operation suited for small and mid-size farms. Antminer S21 Pro provides higher 234TH output and better efficiency for users who want stronger hashrate without increasing infrastructure complexity. Choose 216TH for balance, choose Pro for higher productivity.
| Field | S21 216TH | S21 Pro |
|---|---|---|
| Algorithm | SHA-256 (BTC/BCH/BSV) | SHA-256 (BTC/BCH/BSV) |
| Hashrate | 216 TH/s | 234 TH/s |
| Cooling | Air-cooled | Air-cooled |
| Power Consumption | Standard efficient (typical farm power) | Slightly higher due to increased output |
| Energy Efficiency (per TH) | Balanced output-to-power ratio | Better hash per watt ratio |
| Best For / Use Case | Small to mid-size mining farms needing stable output with manageable infrastructure | Farms wanting higher hash rate with manageable cooling/power needs |
| Strengths | Stable hashrate, easier deployment, lower heat/noise compared to higher output versions | Higher hashrate, better throughput per unit than 216TH, good efficiency |
| Considerations | Lower total throughput vs Pro | Slightly more power draw and heat vs 216TH, but offers higher performance |
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Processing&Shipping Time
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Payment Policies
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Taxes and Custom Duties
Processing&Shipping Time
Payment Policies
Taxes and Custom Duties
All shipments will go out by UPS or DHL.
Please contact us if any documentations are requested by customs.
Our product are excluded of all value added taxes and customs duties sold by BT-Miners. You will be solely responsible for paying any outstanding taxes and duties as per your country’s law and customs. Client will be responsible for additional shipping charges if items are returned to sender.
Contact us at store@bt-miners.com or 813-820-0668 if you have any questions.
All products on our website are priced in US Dollars.
Payment made by credit or debit card may subject to card processing fees.
We can accept payment by credit/ debit card, wire transfer, ACH transfer (through our online portal), and crypto.
*Machine prices will fluctuate according to the current market price.*
All orders will be dispatch in the order which they were received. Pre-orders typically ships at the end of the month of the batch but may delay if manufacturer delays release/shipment. In stock machines ship in 3-7 business days from our warehouse in China. Bulk orders may release a few days later.
We always try to ship as soon as we can via USP or DHL after full payment has been received and verified.
International shipping usually takes about 5-8 business days. Due to changing regulations, we will not be able to cover duty tax for all orders entering USA. Deliveries to other countries may require customers to clear customs and pay duty tax. Please notify us right away if documents are requested by customs as improper filing may result in higher fees and/or delays.
All sales are final and non-refundable on any terms.
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FAQs
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What Is The Lifespan Of This Mining Machine?
The lifespan of mining hardware is influenced by usage intensity, environmental factors like temperature, humidity, and dust. Proper maintenance and optimal conditions can significantly extend its longevity.
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How Does Electricity Cost Impact Profitability?
Electricity costs play a crucial role in mining profitability, as high rates can quickly offset profit. Therefore, it is vital to access local electricity costs to determine if mining is viable. With high electricity costs and high liquidity of digital assets, investing in an energy-efficient miner becomes even more important.
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What algorithm does the Antminer S21+ 216TH use?
It uses the SHA-256 algorithm for Bitcoin, Bitcoin Cash, and other SHA-256 coins.
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What is the hashrate of the S21+ 216TH?
The miner provides 216 TH/s under normal operating conditions.
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What cooling system does the S21+ use?
It uses an air-cooled dual-fan system designed for continuous high-load operation.
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Is the S21+ 216TH suitable for home mining?
It is best suited for mining rooms or small-to-large mining farms due to heat and noise levels.
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What power supply does the S21+ require?
It requires standard industrial-grade AC power and a stable electrical environment.
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What coins can I mine?
Bitcoin (BTC), Bitcoin Cash (BCH), Bitcoin SV (BSV), and any SHA-256 compatible coin.
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Can the S21+ run 24/7?
Yes, when placed in a ventilated space with proper airflow.
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Is this model energy efficient?
The S21+ offers strong efficiency within its hashrate class and is favored by farms optimizing cost per TH.
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Does BT-MINERS test the unit before shipping?
Yes, each miner is fully tested and securely packaged prior to shipment.
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Who should choose the S21 216TH?
Miners who want a balanced mix of strong performance, predictable efficiency, and durable 24/7 stability.
