Antminer S21 Pro
Powerful hardware. Expert setup.
100% uptime infrastructure.
ASIC Image

BitmainAntminer S21 Pro

Technical specifications

Hash-rate
234
Algorithm
SHA-256
Power consumption
3510
Release year
2025
Description
The Bitmain Antminer S21 Pro is a high-efficiency ASIC-based Bitcoin miner, engineered to maximize computational throughput while minimizing power consumption. This device exemplifies cutting-edge cryptocurrency mining technology, enabling miners to optimize operational profitability through advanced hash rate performance and energy-efficient design. Equipped with robust ASIC chips, the S21 Pro delivers sustained performance even under high-demand mining conditions, making it a reliable solution for both individual and industrial-scale operations.

Why Choose Antminer S21 Pro?

The Antminer S21 Pro combines advanced hash rate optimization with energy-efficient design, creating an ideal balance for cost-effective mining operations. Consider the following advantages:
  • High Computational Throughput – Advanced ASIC design allows rapid processing of SHA-256 algorithms for Bitcoin mining.
  • Optimized Energy Efficiency – Reduced power consumption per TH/s enhances long-term profitability.
  • Durability and Longevity – Industrial-grade components ensure stable operation in high-load environments.
  • Scalable Mining – Compatible with major mining pools and easy to integrate into multi-unit operations.
As an expert, the Antminer S21 Pro demonstrates a significant improvement in energy-to-hash efficiency, positioning it as a top-tier solution for miners seeking sustainable returns. Source
Antminer S21 Pro Specifications
Feature Bitmain Antminer S21 Pro
Mining Algorithm SHA-256 (Bitcoin)
Hash Rate 110 TH/s ± 5%
Power Consumption 3000 W ± 10%
Efficiency 27.3 J/TH
Noise Level 72 dB
Dimensions 195mm x 290mm x 370mm
Weight 14 kg
ASIC Chips Advanced 7nm ASIC

How to Start Mining with Antminer S21 Pro

Launching a mining operation with the Antminer S21 Pro requires a systematic and data-driven approach to maximize computational efficiency and profitability. 
  • Step 1: Physical Setup – Connect to a stable power source and ensure adequate cooling in the deployment area.
  • Step 2: Pool Integration – Select a reputable mining pool to reduce variance in Bitcoin mining rewards.
  • Step 3: Software Configuration – Access the device interface to input pool credentials, adjust fan speed, and monitor hash rate and energy metrics.
  • Step 4: Optimization – Continuously track power consumption and profitability for operational efficiency.
  • Step 5: Maintenance – Routine firmware updates and physical cleaning maintain device longevity and prevent performance degradation.
Continuous monitoring, routine maintenance, and strategic optimization of energy usage collectively enhance profitability and safeguard the integrity of the hardware, ensuring reliable output in industrial and large-scale mining environments.
Advantages Disadvantages
High hash rate ensures faster block solving Relatively high Antminer S21 Pro price
Energy-efficient operation lowers electricity costs Technical expertise required for setup
Industrial-grade durability for long-term mining Moderate noise may be disruptive in residential environments
Compatibility with major mining pools Larger physical footprint than smaller miners
As an expert, understanding the balance between hash rate and power consumption is critical; the S21 Pro achieves this efficiently, offering measurable Antminer S21 Pro profitability.

Estimate Time

Accurately projecting setup duration and return on investment is essential for strategic mining deployment.
  • Average ROI: Depending on network difficulty and electricity rates, miners can expect return on investment within 7–14 months.
  • Initial Setup Duration: Approximately 30–45 minutes for experienced users.

Shipping

Reliable shipping protocols are critical to maintaining the integrity of high-performance ASIC hardware during transit. 
  • Delivery Time: 5–14 business days worldwide.
  • Packaging: Anti-static, shock-resistant packaging included for secure transport.

Returning Policy

A structured return and warranty framework is vital for mitigating operational and financial risk.
  • Returns accepted within 14 days if the unit is unopened and in original condition.
  • Defective units are eligible for replacement under warranty procedures.

Warranty

The Bitmain Antminer S21 Pro represents a scientifically optimized balance between high hash rate and reduced power consumption, maximizing profitability for miners. 
  • Standard 12-month Bitmain warranty covers manufacturing defects.
  • Extended technical support and service plans available via EZBlockchain.net.
Its advanced ASIC design and energy efficiency make it a premier choice for sustainable Bitcoin mining operations.
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KEY ADVANTAGES

High Hashrate & Superior Efficiency

Delivers top-tier mining performance with optimized power usage, maximizing Bitcoin mining returns.

Advanced Cooling Technology

State-of-the-art thermal management and fan design prevent overheating and maintain stable operation.

Quiet & Clean Mining Experience

Minimized noise and dust output make it ideal for both home and industrial mining setups.

Long-Lasting Hardware

Robust components and efficient heat dissipation prolong the operational lifespan of your miner.

Energy-Saving Operation

Lower electricity consumption with smart power management ensures continuous 24/7 mining efficiency.

User-Friendly Setup

Plug-and-play design with built-in controller and intuitive interface allows fast installation and easy monitoring.

World Class
Service
starstarstarstarstar
Powerful and reliable — significantly improved our mining efficiency.
Sarah L.
starstarstarstarstar
Stable performance with excellent ROI — highly recommend for serious miners.
David K.
starstarstarstarstar
Efficient, quiet, and powerful — perfect for scaling our mining operations.
Emily R.

OTHER ASICS

ASIC Image
Bitmain
Antminer S21
$3,800.00
Hash-rate 200 TH/s
Algorithm
SHA-256
Power consumption
3551
Release year
2025
ASIC Image
Bitmain Antminer S21
$3,800.00
Hash-rate
200 TH/s
Algorithm
SHA-256
Power consumption
3551
Release year
2025
Description

WithAntminer S21, profitabilityfrom mining becomes tangible and easily achievable. One of the latest entries in the Bitmain ASICs series, S21 is a beast of a mining setup, both powerful and flexible. It is a great, balanced entry point for new miners and a highly-efficient hardware addition or replacement for existing operations.

Current Bitmain Antminer S21 price: $4,200
Why Choose Antminer S21?
The Bitmain Antminer S21 is a state-of-art ASIC miner designed for SHA-256 algorithm cryptocurrencies like Bitcoin. With a hash rate of up to 195 TH/s and power consumption of 3500W, it offers an outstanding energy efficiency of 17 J/TH.

The Antminer S21 is designed for continuous operation, maximized uptime, and active profitability. With its high hash rate threshold, users can expect peak mining performance. Depending on network difficulty and electricity costs, Antminer S21 can help achieve highly profitable margins.

Bitmain Antminer S21 specifications:

High performance: Delivers a robust 195 TH/s hash rate at peak performance.
Energy efficiency: Consumes 3500W, optimizing electricity usage.
Compact design: Measures 400mm x 195mm x 290mm, fitting easily into any setup.
Durable build: Weighs 15.4 kg, keeping stable during operation.
Optimal operating conditions: Functions best between 0–45°C with 10–90% humidity.
How to Start Mining with Antminer S21?
It is fairly easy to install and start using a newly-purchased Antminer S21 even withoutEZ Blockchain’s assistance:

Unbox and inspect: Check that all components are present and undamaged.
Connect to power: Use a compatible power supply unit (PSU) to connect the miner to a 220~277V AC outlet.
Set up network: Connect the miner to the internet via an RJ45 Ethernet cable.
Access miner interface: Use a web browser to enter the miner’s IP address and access the configuration page.
Configure mining pool: Input your preferred mining pool details and wallet address.
Start mining: Save settings and begin the mining process.
Useful: Running the miner in stock configuration for a few hours before immersion cooling ensures all systems operate correctly, preventing potential damage during fluid immersions.

Important: The S21 model’s single power cord design simplifies electrical connections compared to older models, but high current requirements still mandate professional electrical inspection for safety

Delivery Time
Your newly-placed order for an ASIC miner takes 7–14 business to arrive, depending on the stock situation and your location. We provide a tracking number which you can use to watch the shipping process in real time and get updates on each milestone.

Shipping
We offer international shipping via big trusted couriers. Shipping costs may vary based on destination and package weight. For detailed shipping options and costs, pleasecontact EZ Blockchain’s support.

Return policy
All sales of the Antminer S21 are final and non-refundable. We advise customers to review their orders carefully before purchase. For more details, consult Bitmain’s terms and conditions.

Warranty
The Antminer S21 comes with a 365-day warranty, which allows addressing manufacturing defects in up to a year from the official shipment date. Customers can check their warranty status by entering the miner’s serial number on Bitmain’s warranty check page.

Got more questions? EZ Blockchain will help you find your best-fitting configuration of theAntminer S21 for sale, assist with its full setup, and support you further, every step of the way.

ASIC Image
Bitmain
Antminer S21 XP
$7,150.00
Hash-rate 270 TH/s
Algorithm
SHA-256
Power consumption
3645
Release year
2025
ASIC Image
Bitmain Antminer S21 XP
$7,150.00
Hash-rate
270 TH/s
Algorithm
SHA-256
Power consumption
3645
Release year
2025
Description

The Bitmain Antminer S21 XP is a cutting-edge Bitcoin (BTC) mining device, designed for maximum efficiency and performance. It utilizes advanced SHA-256 ASIC chips, delivering a high hash rate of up to 270 TH/s, making it one of the most powerful miners on the market.

Equipped with a built-in controller and an intuitive user interface, the S21 XP ensures easy setup and seamless monitoring. Its integrated power supply unit eliminates the need for an external power source, while its enhanced cooling system maintains optimal temperature and stability, even under high workloads.

Mining profitability depends on factors such as Bitcoin price, network difficulty, and electricity costs. It is essential to evaluate these variables and calculate potential expenses before investing in mining hardware.

ASIC Image
Bitmain
Antminer S21 Pro
$4,900.00
Hash-rate 234 TH/s
Algorithm
SHA-256
Power consumption
3510
Release year
2025
ASIC Image
Bitmain Antminer S21 Pro
$4,900.00
Hash-rate
234 TH/s
Algorithm
SHA-256
Power consumption
3510
Release year
2025
Description

The Bitmain Antminer S21 Pro is a high-performance Bitcoin (BTC) mining device, engineered for maximum efficiency and profitability. It utilizes advanced SHA-256 ASIC chips, delivering a hash rate of up to 234 TH/s, making it one of the most powerful miners available.

Designed for ease of use and durability, the Antminer S21 Pro features a built-in controller and a user-friendly interface, ensuring smooth setup and monitoring. Its integrated power supply unit eliminates the need for external power sources, while its advanced cooling system maintains stable temperatures even under heavy workloads.

Mining profitability with the Antminer S21 Pro depends on Bitcoin price, network difficulty, and electricity costs. To maximize returns, it is crucial to analyze these factors and calculate operating expenses before investing in mining hardware.

ASIC Image
Bitmain
Antminer L9
$7,700.00
Hash-rate 14 TH/s
Algorithm
Scrypt
Power consumption
3360
Release year
2025
ASIC Image
Bitmain Antminer L9
$7,700.00
Hash-rate
14 TH/s
Algorithm
Scrypt
Power consumption
3360
Release year
2025
Description

The Bitmain Antminer L9 is a high-performance Litecoin (LTC) and Dogecoin (DOGE) mining device, designed for maximum efficiency and profitability. It utilizes advanced Scrypt ASIC chips, delivering a hash rate of up to 16 TH/s, making it one of the most powerful Scrypt miners available.

Engineered for ease of use and durability, the Antminer L9 features a built-in controller and an intuitive user interface, ensuring smooth setup and real-time monitoring. Its integrated power supply unit eliminates the need for external power sources, while its enhanced cooling system maintains optimal temperature and stability during intensive mining operations.

Mining profitability with the Antminer L9 depends on Litecoin and Dogecoin market prices, network difficulty, and electricity costs. Conducting a thorough cost analysis and evaluating mining conditions is essential before investing in this hardware.

FREQUENTLYASKEDQUESTIONS

What is the hash rate of the Antminer S21 Pro?

The Antminer S21 Pro delivers an industry-leading hash rate of up to 115 TH/s, providing maximum mining efficiency.

How much power does it consume?

It consumes approximately 3250W, optimized for performance and lower electricity costs.

Is it suitable for home mining?

Yes, its noise reduction and dust-free design make it suitable for both home and professional mining environments.

Does it come with a built-in controller?

Yes, the Antminer S21 Pro has a built-in controller for easy setup and monitoring.

How do I set it up?

Simply connect the power supply, network cable, and configure via the web interface or mining management software — it’s plug-and-play.

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