Bitmain Antminer S21 Pro 234T Bitcoin Miner: High-Efficiency SHA-256 Mining Rig

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The Bitmain Antminer S21 Pro 234T stands at the forefront of next-generation Bitcoin mining technology, delivering exceptional performance for serious miners seeking efficiency, durability, and long-term profitability. Designed to mine SHA-256 algorithm-based cryptocurrencies like Bitcoin (BTC) and Bitcoin Cash (BCH), this advanced rig offers a hash rate of 234 TH/s with an industry-leading energy efficiency of just 15.0 J/TH, making it one of the most power-optimized ASIC miners in 2025.

Whether you're scaling up your mining operation or entering the space with a high-performance setup, the Antminer S21 Pro is engineered to maximize returns while minimizing operational strain.

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Why the Antminer S21 Pro Outshines the Competition

Compared to its predecessor, the standard Antminer S21 (200 TH/s at 17.5 J/TH), the S21 Pro delivers a significant leap in both hashrate and efficiency. With a 17% improvement in power efficiency, it reduces electricity costs—a major factor in mining profitability—without sacrificing output.

Built for resilience, the S21 Pro operates reliably in environments up to 45°C (113°F), making it suitable for diverse climates and industrial setups. Its dual-fan cooling system maintains optimal temperatures even under continuous load, ensuring stable performance over extended periods.

Key Specifications at a Glance

This miner supports Ethernet connectivity for seamless integration into mining pools and monitoring systems, allowing real-time tracking and remote management.

Profitability and Mining Performance

While exact profitability depends on fluctuating variables such as electricity rates, network difficulty, and cryptocurrency prices, the Antminer S21 Pro is designed to remain profitable even in competitive mining environments.

At an average electricity cost of $0.07/kWh, the S21 Pro generates approximately:

These estimates assume current network difficulty and Bitcoin price stability around $60,000–$70,000. As halving events reduce block rewards over time, efficiency becomes increasingly critical—making models like the S21 Pro more valuable than ever.

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Coins You Can Mine with the S21 Pro

Thanks to its SHA-256 architecture, the Antminer S21 Pro is compatible with several major cryptocurrencies:

Miners can choose to direct their hash power toward the most profitable chain at any given time, depending on exchange rates and mining pool incentives.

Shipping, Availability & Order Process

The Antminer S21 Pro is available for immediate shipment from U.S.-based inventory, enabling faster delivery for North American customers. In-stock units ship within 3 business days after payment confirmation.

For international buyers, standard express shipping via DHL, UPS, FedEx, or TNT typically takes 5–8 business days, with remote regions requiring up to 10 days.

DDP Shipping Available

We offer Delivered Duty Paid (DDP) shipping to select countries including:

With DDP, all import duties and taxes are pre-paid—eliminating surprise fees upon arrival. For non-DDP destinations, we can assist by providing a lower declared invoice value to help reduce customs liabilities.

All sales are final and non-refundable—a standard practice in the mining hardware industry due to rapid price fluctuations and limited supply.

Warranty & Buyer Protection

New, factory-sealed Antminer S21 Pro units come with a 6–12 month manufacturer warranty, starting from the production date. Coverage applies only when devices are operated according to specifications and not modified.

Used or tested units are sold "as-is" without warranty, but pre-shipment testing videos are available upon request to verify functionality before delivery.

Please note: Return shipping and handling costs are the responsibility of the buyer. Repair timelines vary based on issue complexity and component availability.

Frequently Asked Questions (FAQs)

Is the Antminer S21 Pro suitable for home mining?

Yes, though its 75 dB noise level means it’s best placed in a dedicated space like a garage or basement. Pairing it with sound-dampening enclosures or liquid cooling can improve comfort for residential setups.

Can I use renewable energy to power the S21 Pro?

Absolutely. Solar, wind, or hydro-powered mining operations benefit greatly from the S21 Pro’s high efficiency. Lower electricity costs directly increase net profitability.

Does the miner include the power supply unit?

Yes, the PSU is included with every Antminer S21 Pro unit, simplifying setup and reducing additional procurement needs.

How do I monitor my miner’s performance?

You can access the miner’s web interface via Ethernet to track hashrate, temperature, fan speed, and uptime. Many users also integrate it with third-party monitoring platforms like Awesome Miner or Hive OS.

What happens if there's a delay in shipping?

Delays may occur due to factory production issues or logistics bottlenecks. Orders are processed on a first-paid, first-shipped basis. Cryptocurrency payments clear faster (within hours), while bank transfers may take 3–7 business days to verify.

Can I pick up my order locally?

Yes. Self-pickup options are available at warehouses in Hong Kong and the United States, allowing you to avoid shipping costs and gain immediate access to your equipment.

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