Bitmain Antminer S21+

Miner + Setup & Support

£2,125.00

Bitmain Antminer S21+

Verified ASIC Hardware Supplier

Bitmain Antminer S21+

BTC & BCH ASIC Miner

£2,125.00

Setup Available

In stock - Ready to Ship

Key Specifications

Hash Rate: 216TH/s

Power: 3564W

Algorithim: SHA-256

Efficiency: 16.5J/T

The Bitmain Antminer S21+ 216T is a compact and efficient SHA-256 ASIC miner designed for reliable Bitcoin mining performance in home and small-scale setups. With a market-rated hashing power of approximately 216 terahashes per second, this unit delivers solid computing capacity while balancing power use and thermal output, making it suitable for miners in the UK and EU who want mainstream mining performance without the complexity of advanced cooling systems.

Setup & Support: Recommended for most buyers

Remote setup service

Power & saftey guidance

Network & account setup

Miner configuration

This miner is available as hardware only or with our Setup & Support package which is recommended for most buyers.

The Setup & Support option includes remote configuration, power and safety guidance, network and mining account setup, and full miner configuration to ensure your equipment is deployed correctly and operating efficiently. Ongoing remote support is also available to assist with optimisation and troubleshooting.

Select the option that best suits your level of experience and operational requirements.

We dispatch in-stock items promptly and typical delivery is within 5-10 working days. Larger or high-value ASIC miners may be shipped via insured courier or palletised freight to ensure secure delivery. Please note that delivery times are estimates and may vary depending on stock availability and supplier schedules.

For full details on processing times, pre-orders, international delivery and delivery requirements, please refer to our Shipping Policy.

If you are purchasing as a consumer, you may cancel your order within 14 days of delivery, provided the item is unused and in its original condition. Due to the technical nature of ASIC mining equipment, hardware that has been installed, powered on or configured may not be eligible for return unless faulty.

Faulty goods are handled in accordance with UK consumer law. Business purchases and wholesale orders are non-refundable unless confirmed defective.

For full details, including return conditions and procedures, please refer to our Returns & Refunds Policy.

All ASIC miners are supplied with the original manufacturer’s warranty, provided the unit remains unmodified and is operated in accordance with the manufacturer’s guidelines. Warranty terms, duration and claim procedures are determined by the manufacturer.

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Model

Hash Rate

Power

Efficiency

Algorithm

Antminer S21+

216TH/s

3564W

16.5J/T

SHA-256

The Antminer S21+ 216T is part of Bitmain’s S21 family of SHA-256 miners, a generation that refines performance and efficiency over prior lines such as the S19 and S20 series. The “+” designation indicates a performance step above base S21 models, offering miners a bit more hashing power with similar architectural and thermal design.

Typical power consumption for the S21+ 216T sits in the ~3,500–4,000 W range under sustained load, depending on ambient temperature, airflow, and power supply efficiency. Bitmain released the S21 series beginning in late 2024, with broader availability for S21+ variants through 2025. These miners use updated ASIC chip layouts and firmware improvements to hold steady performance over extended 24/7 operation.

Bitmain is one of the world’s most recognised ASIC mining hardware manufacturers and the creator of the Antminer line. Since its founding in 2013, Bitmain has been a leader in ASIC design across proof-of-work algorithms, especially SHA-256 for Bitcoin mining.

Bitmain products like the S21+ benefit from extensive ecosystem support, including compatibility with major mining pools, firmware upgrade paths, and integration with monitoring and management tools. The S21+ 216T continues this tradition by combining hardware performance with support infrastructure suitable for both retail and small professional miners.

The Antminer S21+ 216T typically achieves energy efficiency in the ~8.5–9.5 J/TH range under standard air-cooled conditions. This measurement reflects the joules of electrical energy consumed per terahash of SHA-256 hashing work and demonstrates moderate improvement over many older generation air-cooled miners.

Efficiency depends on factors like intake air temperature, miner tuning, and power quality. In the UK and EU, where electricity prices tend to be higher, miners pay close attention to efficiency figures when planning deployments, and the S21+ 216T’s energy profile helps keep consumption reasonable while delivering solid throughput.

The Antminer S21+ 216T mines the SHA-256 proof-of-work algorithm, the cryptographic hashing function that underpins Bitcoin (BTC) and several other SHA-256-based coin networks. SHA-256 miners contribute hashing power to secure the blockchain network, perform cryptographic puzzle solving, and compete for block rewards and transaction fees.

Although Bitcoin is the primary network for SHA-256 miners due to its dominant hashrate and liquidity, miners can also direct this hardware at other SHA-256-compatible coins if desired; however, BTC remains the main economic driver in this segment.

ASIC miners such as the Bitmain Antminer S21+ 216T are built for continuous 24/7 operation and generally have an operational lifespan of 3–5 years when maintained properly. Key lifespan factors include stable power delivery, adequate ventilation, and routine dust and thermal maintenance.

With its release in 2024–2025, the S21+ 216T represents part of the current generation of mainstream SHA-256 mining hardware and should remain a viable choice for retail home miners throughout its expected lifecycle. Over time, newer, more efficient models may emerge, but this unit’s performance and energy profile help it retain relevance in small-scale mining deployments.

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Frequently asked questions

We accept major debit and credit cards, bank transfer and selected digital payment methods where indicated at checkout. All payments must be received and cleared before goods are dispatched unless otherwise agreed in writing.

For certain orders, we offer a deposit option:

10% deposit for miners valued over £2,000
20% deposit for miners valued under £2,000

The remaining balance must be paid before dispatch. Deposit arrangements are subject to approval and confirmed stock allocation.

All miners are supplied with the original manufacturer’s warranty, provided the unit remains unmodified and is operated in accordance with manufacturer guidelines. Warranty terms and claim processes are determined by the manufacturer.

Yes. We offer an optional Setup & Support package that includes remote installation guidance, power and safety advice, network and mining account setup, and full miner configuration. Ongoing remote support is also available.

Yes. ASIC miners require appropriate electrical capacity and ventilation. We provide guidance on power supply, load considerations and safe operation, but customers remain responsible for ensuring their installation complies with local regulations.

Delivery times vary depending on stock status and location. Estimated timeframes are provided on product pages and at checkout. Pre-orders are subject to manufacturer schedules.

Yes. We support both new purchases and existing operations. Our team can assist with troubleshooting, optimisation, firmware configuration and scaling advice.

No. Mining profitability depends on factors outside our control, including Bitcoin price, network difficulty, power costs and regulatory conditions. We provide hardware and technical support, but returns cannot be guaranteed.

Yes. We supply individual operators and commercial-scale buyers. Please contact us directly to discuss wholesale availability and trade pricing.