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Power
3500W
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Hashrate
200.00 TH/s
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Efficiency
17.5 J/T
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Algorithm
SHA-256
Bitmain Antminer S21 Bitcoin Miner 200TH/S | BT-MINERS
from US$1,070.00
Top Hashrate : Up to 100% better than the previous generation
High Stability : Supports 24/7 continuous operation
Warranty : Come with 360 days factory warranty.
S21 Profitability Calculate
Daily Earning
ROI
Electricity
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Miner Profitability History
Description
Antminer S21 200T Description
Model Antminer S21 (200Th) from Bitmain mining SHA-256 algorithm with a maximum hashrate of 200Th/s for a power consumption of 3550W.
For Brand NEW Miner, Bitmain Provides 360 days of factory warranty.
Technical Specifications
| Product Glance | Value |
|---|---|
| Model | S21 |
| Crypto algorithm/coins | SHA256 | BTC/BCH/BSV |
| Typical hashrate | 200.00 TH/s |
| Power on wall @35℃, Watt | 3500W |
| 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 | 400*195*290 |
| Server size(length*width*height, with package), mm | 570*316*430 |
| Net weight, kg | 15.4 |
| Gross weight, kg | 17.2 |
| Noise@30℃, dBA | 76 |
| Environment Requirements | Value |
|---|---|
| Storage temperature, °C | -20~70 |
| Operation humidity(non-condensing), RH | 10~90% |
| Operation temperature,°C | 0~45 |
| 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.
Antminer S21 Description
The Bitmain Antminer S21 delivers a dependable 200TH/s of SHA-256 mining performance with solid 17.5J/TH efficiency, making it a strong choice for Bitcoin miners seeking reliable output at a competitive price. Operating at around 3500W, the S21 provides a balanced combination of power and productivity suitable for growing farms and hosting environments. Its advanced chip design, stable airflow, and durable build ensure consistent 24/7 mining with reduced maintenance needs.
BT-MINERS offers fast worldwide delivery, secure checkout, and full factory warranty support to guarantee a smooth and trusted purchasing experience. For miners looking to expand capacity or enter Bitcoin mining with a cost-effective, stable ASIC, the Antminer S21 remains one of the most practical options.
Product Certification
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.
Product Compete
Antminer S21 Pro vs S21
| Feature | Antminer S21 Pro 234TH/s | Antminer S21 200TH/s |
|---|---|---|
| Hashrate | 234 TH/s | 200 TH/s |
| Power Consumption | 3510 W (approx.) | 3500 W (approx.) |
| Energy Efficiency | ~15 J/TH | ~17.5 J/TH |
| Best Use Case | Large-scale farms, low-cost power, pro hosting | Budget-conscious miners, farm expansion |
| Relative Hardware Cost | Higher upfront price, better long-term efficiency | Lower upfront price, easier entry option |
| Ideal Power Rate | Strong advantage in regions with cheap electricity | Suitable where power cost is moderate |
| Target User Profile | Professional miners optimizing ROI per kWh | Miners focused on lower initial investment |
The Antminer S21 Pro delivers higher efficiency and a stronger 234TH/s hashrate, making it ideal for low-cost power regions and professional mining farms. The standard S21 offers 200TH/s with a lower upfront cost, suitable for budget-focused miners seeking reliable SHA-256 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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Is the S21 a good option for expanding existing farms?
Yes. Its stability, efficiency, and dependable output make it a great choice for scaling mining capacity.
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Who is the Antminer S21 best suited for?
It is ideal for miners needing strong performance at a lower initial cost compared to premium models.
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How loud is the Antminer S21 during operation?
Noise levels typically range from 75–76 dBA, similar to other high-performance ASIC miners.
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Is the S21 suitable for home mining?
It is not recommended for homes due to noise and heat output but performs excellently in mining farms.
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Does the Antminer S21 come with a Bitmain warranty?
Yes. Brand-new units include a full 365-day Bitmain factory warranty.
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What electricity price is ideal for the S21?
The S21 performs best at power rates under $0.10/kWh, depending on Bitcoin price and network difficulty.
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Is the Antminer S21 profitable in 2025?
Yes. It is profitable in regions with moderate electricity prices and can deliver strong long-term ROI.
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What is the efficiency of the Antminer S21?
The S21 operates at approximately 17.5J/TH, offering solid efficiency for SHA-256 mining.
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How much power does the Antminer S21 use?
It consumes around 3500W, providing stable output suitable for farms and hosting environments.
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What is the hashrate of the Antminer S21?
The Antminer S21 delivers a consistent 200TH/s, making it a strong mid-range Bitcoin mining option.
