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Bitmain Antminer S21 Pro 234 TH/s
Nominal specifications should be confirmed for the actual batch.Technical source ↗
In stock · new & checked used
Bitmain · SHA-256 · SKU VA-S21P-234

Bitmain Antminer S21 Pro 234 TH/s

234 TH/s3 510 WBTC / BCH15 J/TH

The Bitmain Antminer S21 Pro is a dedicated SHA-256 ASIC rated at 234 TH/s with 3 510 W nominal power draw. VoltASIC lists both new and checked-used units when available, with the actual condition, price and order status shown before payment.

VoltASIC pricing
New1 590 € TTCStock units: dispatch target within 7 business days.
Checked used999 € TTCCondition of the actual unit is disclosed before purchase.
⭐ USDC Base💳 Card · SquareEURC EthereumUSDT AvalancheBTC

Standard shipping is included for mainland France. Other destinations are calculated before payment.

Technical specifications

Hashrate234 TH/s
AlgorithmSHA-256
CoinsBTC / BCH
Power3 510 W
Efficiency15 J/TH
Noise76 dBA
Voltage220–277 V AC
NetworkRJ45 Ethernet 10/100M
Dimensions450 × 219 × 293 mm
Net weight20 kg
Operating temperature-20 to 45 °C

Key points

  • 234 TH/s nominal
  • 3 510 W nominal
  • SHA-256
  • BTC / BCH

Warranty: Applicable terms are confirmed before payment.

Customer reviews

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ASIC buyer guide

Buying the Bitmain Antminer S21 Pro 234 TH/s: what to check

Technical page reviewed: 2026-09-22 · Technical source ↗

Who is this miner for?

The Bitmain Antminer S21 Pro targets BTC / BCH and other networks compatible with SHA-256. It is not enough to compare the purchase price: your electricity rate, available voltage, airflow, noise tolerance and expected operating hours determine whether the machine is suitable for your site. VoltASIC does not use projected mining income as a sales promise because network difficulty, asset prices, pool fees and uptime change over time.

See all compatible ASIC miners →

Power, heat and network planning

At continuous operation, 3 510 W represents about 84.2 kWh per day and approximately 2,527.2 kWh over 30 days before ancillary losses. Plan the electrical circuit and heat extraction before installation. The listed network interface is RJ45 Ethernet 10/100M; a stable wired connection is recommended for mining hardware.

Open the electricity-cost calculator

New or checked used?

A new unit reduces uncertainty about previous operating history. A checked-used unit can lower the upfront cost, but the condition of the actual machine matters more than a generic model description. VoltASIC's used workflow is designed to document functional checks, serial information and packaging details when recorded for the order.

See checked used ASICs →

Compare before buying

Compare hashrate, nominal power, efficiency and purchase price with models that target the same project.

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Bitmain Antminer S21 Pro FAQ

What is the nominal hashrate?

234 TH/s. Nominal values can vary by batch and operating conditions.

How much power does it draw?

The listed nominal power is 3 510 W.

Can I pay by card?

Yes. VoltASIC supports secure card payment through Square, plus the direct crypto payment methods shown separately at checkout.

Is shipping insured?

VoltASIC states that shipments are insured and delivered against signature under the shipping terms displayed before payment.