Bitmain Antminer S21

The Bitmain Antminer S21 is in stock and ready to ship at MiningGear Co. Buy the Bitmain Antminer S21 at the best rate possible, every order includes a free compatible PSU, secure bank-wire or crypto payment, and fully tracked, insured worldwide DDP shipping, warehouse to your door in 80+ countries.

Bitmain Antminer S21 Bitcoin MinerThe Bitmain Antminer S21 is one of the best value commercial Bitcoin miner available. Designed by Bitmain, the Antminer S21 delivers industry-leading performance with exceptional energy efficiency, making it ideal for professional mining operations, hosting facilities, and serious miners looking to maximize hashrate and profitability.Built on advanced ASIC chip technology, the Antminer S21 is engineered for continuous high-performance operation in demanding mining environments. With powerful hashrate output and improved efficiency compared to previous generation miners, the S21 helps operators reduce energy costs while maintaining competitive mining performance.Key FeaturesHigh Hashrate PerformanceThe Antminer S21 delivers exceptional Bitcoin mining performance, making it suitable for large-scale mining operations and professional deployments.Industry-Leading EfficiencyDesigned with next-generation ASIC chips, the S21 provides improved energy efficiency (J/TH) over the S19 series, helping miners reduce operational costs and optimize power usage.Reliable Commercial HardwareAntminer miners are known for their durability, reliability, and long-term uptime, making them a trusted choice for mining farms and industrial Bitcoin mining facilities worldwide.Advanced Cooling SystemThe Antminer S21 utilizes a high-performance air cooling system with optimized airflow and high-speed fans to maintain stable operating temperatures during continuous mining. If you want to control your exhaust heat further, check out our Antminer Exhaust shrouds. Scalable Mining DeploymentWhether you’re expanding an existing mining operation or deploying new hardware, the Antminer S21 is designed to scale efficiently in professional mining environments.Why Choose the Antminer S21?The Antminer S21 represents the latest generation of high-performance ASIC Bitcoin mining hardware. With improved chip efficiency and strong hashrate output, it offers an excellent balance between performance, reliability, and energy consumption.Professional miners choose the S21 because it provides:High hashrate for competitive miningStrong energy efficiency for lower operational costsReliable hardware built for continuous operationProven Antminer performance trusted across the industryFor miners seeking powerful and efficient Bitcoin mining hardware, the Antminer S21 continues the legacy of the Antminer lineup as one of the most trusted solutions available.Ideal Use CasesThe Antminer S21 is ideal for:Commercial Bitcoin mining farmsProfessional mining operationsHosting facility deploymentsLarge-scale mining infrastructureExperienced miners expanding their fleetComes with ~1 year manufacturer warranty.PSU includedNote: Antminer S21 runs on 220-277V voltage, it will not operate on household 110-120V voltageWhy Choose the Antminer S21?The Antminer S21 represents the latest generation of high-performance ASIC Bitcoin mining hardware. With improved chip efficiency and strong hashrate output, it offers an excellent balance between performance, reliability, and energy consumption.Professional miners choose the S21 because it provides:High hashrate for competitive miningStrong energy efficiency for lower operational costsReliable hardware built for continuous operationProven Antminer performance trusted across the industryFor miners seeking powerful and efficient Bitcoin mining hardware, the Antminer S21 continues the legacy of the Antminer lineup as one of the most trusted solutions available.Antminer S21 Profitability, Power Requirements & Setup GuidePower Requirements for the Antminer S21The Bitmain Antminer S21 is designed for commercial and high-performance Bitcoin mining environments and requires a 220-240V power source for proper operation. With an average power consumption of around 3500 watts, the S21 is typically deployed in dedicated mining facilities, hosting environments, or locations with industrial electrical infrastructure.Key power considerations include:Input Voltage: 220-240VPower Consumption: 3500WPower Supply: APW17Recommended Circuit: Dedicated 240V circuit for stable operationFor safe operation and maximum efficiency, miners should ensure proper electrical capacity and adequate airflow within the mining environment.Antminer S21 Profitability ConsiderationsProfitability for the Antminer S21 depends on several important factors including:Bitcoin network difficultyBitcoin market priceElectricity cost per kWhMining pool feesOperational efficiencyWith a hashrate of approximately 151-200 TH/s, the Antminer S21 provides strong mining performance that can remain competitive in professional mining environments. High-efficiency ASIC hardware like the S21 helps reduce electricity cost per terahash, which is one of the most important factors affecting long-term mining profitability.Many professional miners deploy multiple S21 units to scale their operations and improve overall network contribution.How to Set Up an Antminer S21Setting up the Antminer S21 is straightforward for experienced miners and mining operators.Basic setup steps include:Connect Power, Attach the compatible power supply and connect to a 220-240V power source.Connect Network, Plug an Ethernet cable from the miner to your router or network switch.Locate the Miner on Your Network, Use an IP scanning tool to find the miner’s local IP address.Access the Web Interface, Enter the IP address into a web browser to open the Antminer dashboard.Configure Mining Pool, Enter your mining pool URL, worker name, and password.Start Mining, Save settings and begin hashing.Once configured, the miner will begin contributing hashrate to the Bitcoin network and generating mining rewards through your configured mining pool.Cooling & Environmental ConsiderationsThe Antminer S21 uses high-performance air cooling with multiple 120mm fans to maintain stable operating temperatures. Proper airflow is essential for maintaining optimal performance and protecting mining hardware.Recommended environmental conditions include:Operating Temperature: 0°C, 40°CProper ventilation or exhaust ductingClean air intake to reduce dust buildupConsistent airflow through mining racksMany mining operators integrate additional ventilation systems, exhaust shrouds, or HVAC solutions to manage heat in larger deployments.Antminer S21 SpecificationsProduct Glance ModelS21Algorithm | CryptocurrencySHA256 | BTC/BCH/BSVHashrate, TH/s151-200Power on wall @25°C, Watt3500Power efficiency on wall @25°C, J/TH17.5Detailed Characteristics Power Supply Power supply AC Input voltage, Volt(1-1)220~277Power supply AC Input Frequency Range, Hz47~63Power supply AC Input current, Amp(1-2)20(1-3)Hardware Configuration Networking connection modeRJ45 Ethernet 10/100MMiner Size (Length*Width*Height, w/o package),mm(2-1)400*195*290Miner Size (Length*Width*Height, with package),mm570*316*430Net weight, kg(2-2)15.4Gross weight, kg(2-2)17.1Environment Requirements Operation temperature,°C0~45Storage temperature,°C-40~85Operation humidity(non-condensing) , RH10~90%Operation altitude, m(3-1)≤2000

Why buy the Bitmain Antminer S21 from MiningGear Co?

• ✅ Genuine, brand-new Bitmain hardware, never refurbished or cloned.
• 🎁 Free PSU included with every Bitmain Antminer S21, ready to plug in and hash on arrival.
• 🌍 Worldwide DDP shipping, duties handled, fully tracked and insured.
• 🔒 Secure payment by bank wire (T/T) or crypto (BTC / ETH / USDT).
• 🛡️ Warranty & global repair service with 24/7 expert support.

Bitmain Antminer S21, Frequently Asked Questions

Is the Bitmain Antminer S21 in stock? Yes, the Bitmain Antminer S21 is in stock and ships fast worldwide.

Does the Bitmain Antminer S21 come with a power supply? Yes, a compatible PSU is included free with every unit.

How is the Bitmain Antminer S21 shipped? Fully tracked and insured with Delivered-Duty-Paid (DDP) customs handling to 80+ countries.

How can I pay for the Bitmain Antminer S21? Securely by bank wire (T/T) or cryptocurrency (BTC, ETH or USDT).

Bitmain Antminer S21: specifications, shipping & payment

Every Bitmain Antminer S21 we ship is bench-tested, brand-new and backed by our warranty and global repair service. Browse more in our ASIC miner collection, or compare the Bitmain Antminer S21 hashrate, power draw and profitability on AsicMinerValue before you buy. Order the Bitmain Antminer S21 today and it ships with a free compatible PSU and fully insured, Delivered-Duty-Paid worldwide delivery to 80+ countries, pay securely by bank wire (T/T) or cryptocurrency (BTC, ETH or USDT). In stock and ready to dispatch.