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Efficient Bitcoin Mining: Bitmain Antminer S21e Hyd 288TH/s
The Bitmain Antminer S21e Hyd 288TH/s is a hydro-cooled Bitcoin miner built for energy-conscious operators who demand stable, scalable performance. Offering 288TH/s at 4896W, it achieves an excellent efficiency of 17 J/TH, ensuring miners maintain profitability while keeping energy costs under control. The advanced hydro cooling system keeps noise levels as low as 50dB, providing quiet, reliable operation in hosting centers or professional farms. By efficiently managing heat, it enhances long-term component durability, making it a strong investment for continuous 24/7 workloads. Supporting 380–415V voltage input, the S21e Hyd operates with stability across temperatures of 5–45°C and humidity levels up to 95%. Compact in design, at 410 x 170 x 209mm and 12.8 kg, it integrates easily into rack systems for streamlined scaling. Released in April 2025, it reflects Bitmain’s ongoing commitment to producing high-performance miners with cutting-edge energy efficiency. By delivering dependable hashrate, consistent uptime, and rack-friendly form factor, the S21e Hyd 288TH/s is ideal for operators who want a balance of reliable output and lower operating costs.
Bitmain Antminer S21e Hydro 288TH/s BITCOIN (SHA256) Miner - Specifications:
| Manufacturer | Bitmain |
|---|---|
| Model | Antminer S21e Hydro |
| Also known as: | Antminer S21e Hydro 288T |
| Supported Algorithm | SHA-256 (Bitcoin) |
| Hashrate | 288 TH/s |
| Power Consumption | 4896W |
| Dimensions | 410 x 170 x 209mm |
| Weight | 12.8 kg |
| Operating Noise Level | 50 dB |
| Power Supply Unit | Included |
| Cooling | Watercooling |
| Interface | Ethernet |
| Temperature | 5 – 45 °C |
| Humidity | 5 – 95 % |
| Release Date | 2025 June |
| Warranty Period | 6 months by the manufacturer |
Condition: Brand new with 6 months manufacturer's guarantee
Delivery time: 8-10 days
Delivery time: 8-10 days
All machines are delivered including the appropriate power supply units.
Condition: New, with a 6 month manufacturer's guarantee
The Bitmain Antminer S21e Hyd 288TH/s offers a winning combination of performance, efficiency, and quiet operation. Its hydro cooling and 17 J/TH energy rating make it a dependable option for scalable operations. Built for profitability and long-term use, it’s an excellent addition to any serious mining setup.
Bitcoin (BTC)
The original cryptocurrency and digital gold standard. Bitcoin pioneered blockchain technology and remains the most secure and widely adopted cryptocurrency. It operates on a proof-of-work consensus mechanism and has a fixed supply of 21 million coins. Bitcoin serves as a store of value and digital currency for peer-to-peer transactions worldwide.
Bitcoin Cash (BCH)
A Bitcoin fork created in 2017 to improve transaction speed and reduce fees. Bitcoin Cash increased the block size limit to allow more transactions per block, making it more suitable for everyday payments. It maintains Bitcoin's core principles while focusing on scalability and lower transaction costs. BCH aims to be digital cash for the world.
Fractal Bitcoin (FB)
Fractal Bitcoin is a cryptocurrency that enhances the scalability of the Bitcoin network through a recursive sidechain architecture. By utilizing the Bitcoin Core code, it creates multiple layers on top of the Bitcoin blockchain, allowing for significantly higher transaction throughput and faster confirmation times of 30 seconds or less. As a merge-mined cryptocurrency, Fractal Bitcoin leverages the same mining process as Bitcoin, ensuring robust security and decentralization. Its goal is to facilitate the development of large-scale applications directly on the Bitcoin blockchain, thereby expanding its utility and potential for mass adoption.
Bitcoin SV (BSV)
Bitcoin Satoshi Vision emerged from a Bitcoin Cash fork, aiming to restore Bitcoin's original protocol. BSV features massive block sizes to enable high transaction throughput and low fees. It focuses on enterprise applications, data storage, and smart contracts while maintaining Bitcoin's proof-of-work security model. BSV positions itself as the true vision of Satoshi Nakamoto.
ACOIN
A SHA-256 based cryptocurrency that focuses on accessibility and community-driven development. ACOIN utilizes Bitcoin's proven mining algorithm while implementing features designed for everyday use. The project emphasizes fair distribution, sustainable mining practices, and building a strong community ecosystem. It aims to bridge traditional finance with blockchain technology.
Curecoin (CURE)
A unique cryptocurrency that combines blockchain mining with protein folding research for medical breakthroughs. Curecoin rewards miners for contributing computational power to Stanford University's Folding@home project, which helps research diseases like cancer and Alzheimer's. This innovative approach makes mining productive for humanity while maintaining network security through traditional SHA-256 mining.
eMark (DEM)
A German-originated cryptocurrency designed for practical digital payments and micropayments. eMark features fast transaction confirmations and low fees, making it suitable for everyday commerce. The project focuses on European markets and aims to provide a stable, reliable digital currency alternative. DEM emphasizes simplicity and user-friendly adoption for mainstream use.
Joulecoin (XJO)
Joulecoin (XJO) is a cryptocurrency that features quick confirmations and transaction comments, utilizing a customized version of Bitcoin's core technology with lowered block time for higher performance and a long proof-of-work period. It does not focus on energy efficiency or renewable energy usage.
Peercoin (PPC)
The first cryptocurrency to implement proof-of-stake consensus alongside proof-of-work. Peercoin pioneered the concept of minting coins through stake ownership, reducing energy consumption compared to pure mining systems. It features a unique approach to network security and coin distribution, combining the best of both consensus mechanisms. PPC is designed to be more sustainable and energy-efficient long-term.
Terracoin (TRC)
A Bitcoin-based cryptocurrency designed for stability and long-term value preservation. Terracoin implements enhanced security features and focuses on being a reliable store of value and medium of exchange. The project emphasizes steady development, community governance, and practical applications for digital commerce. TRC aims to provide a dependable alternative to traditional fiat currencies.
Unbreakable (UNB)
A security-focused cryptocurrency that emphasizes robust network protection and resistance to attacks. Unbreakable implements advanced cryptographic techniques and multiple security layers to ensure transaction integrity and network stability. The project prioritizes building an impenetrable blockchain infrastructure that can withstand various forms of digital threats. UNB represents the next generation of ultra-secure digital currencies.
Don't forget to check out the Hydro Bitcoin Mining Accessories!
Here at MillionMiner, we are proud to be in partnership with Lianli,
a leading Hydro Cooling Manufacturer from China, that is specialized in the field of Asic Cooling.
We sell a wide range of related accessories, from hydro cooling radiators (for single miners)
to a full Hydro Cooling Cabinets, that can run up to 10 powerful bitcoin hydro miners.
If you have any questions, regarding Hydro Bitcoin Mining, don't hesitate to contact us!

Hydro-Cooled Power Supply:
Utilizing a new hydro-cooled power supply with more than a 95%
conversion efficiency achieving energy savings and environmental protection.
Waterproof and dustproof design:
High-grade waterproof and dustproof components are incorporated to safeguard the miner,
which creates an ideal working environment and ensures long-term mining operations
Further Noise Reduction, Silent Operatioins:
The entire miner operates with no fans.
It generates no noise, only the sound of the water flowing

To read more about Hydro Cooling Solutions, please visit our Hydro Mining Section,
where we explain everything you need to know about Hydro Bitcoin Mining: CLICK HERE
Here at MillionMiner, we are proud to be in partnership with Lianli,
a leading Hydro Cooling Manufacturer from China, that is specialized in the field of Asic Cooling.
We sell a wide range of related accessories, from hydro cooling radiators (for single miners)
to a full Hydro Cooling Cabinets, that can run up to 10 powerful bitcoin hydro miners.
If you have any questions, regarding Hydro Bitcoin Mining, don't hesitate to contact us!

Hydro-Cooled Power Supply:
Utilizing a new hydro-cooled power supply with more than a 95%
conversion efficiency achieving energy savings and environmental protection.
Waterproof and dustproof design:
High-grade waterproof and dustproof components are incorporated to safeguard the miner,
which creates an ideal working environment and ensures long-term mining operations
Further Noise Reduction, Silent Operatioins:
The entire miner operates with no fans.
It generates no noise, only the sound of the water flowing

To read more about Hydro Cooling Solutions, please visit our Hydro Mining Section,
where we explain everything you need to know about Hydro Bitcoin Mining: CLICK HERE
ASIC Miner Hosting
Discover Our Exclusive ASIC Miner Hosting Offer – optimized for the highest efficiency and performance of your mining equipment. We provide specialized hosting services for ASIC Miners with a consumption of more than 2.76 kW in our state-of-the-art data centers located in Russia, the United Arab Emirates, and the United States.
Full Access and Control: Through our user-friendly dashboard at eps.millionminer.com, you have full access to your miners at any time. Whether you need to reboot, reconfigure settings, or check the current status – it's all possible with just a few clicks.
Transparent Billing: At the beginning of each month, you will receive a detailed electricity bill that you can conveniently pay with USDT. Our billing processes are transparent and straightforward, ensuring you always have a clear overview.
Flexible Contract Terms: Our hosting contracts are designed for a 12-month term, but offer the flexibility to be automatically extended or cancelled if needed. If you decide to end your mining activities, you can easily remove your miners or have us sell them for you for a small fee.
Demo Account: Visit eps.millionminer.com to explore our demo account and see for yourself the simplicity and effectiveness of our dashboard. Experience how easy managing your mining hardware can be.
For More Information and Personal Consultation: Fill out the tool below, and a customer advisor will support you with any open questions shortly.