Antminer T21

Antminer T21 – 190 TH/s Air‑Cooled Bitcoin Miner

Antminer T21 provides 190 TH/s hashrate with air‑cooling technology, combining affordability, efficiency, and warranty coverage.

Antminer T21 Overview

The Antminer T21 is Bitmain’s budget‑friendly air‑cooled Bitcoin miner. Unlike the flagship S21, this model offers slightly lower hashrate but at a more accessible price point. Consequently, miners benefit from reduced upfront costs while still achieving competitive efficiency. Moreover, its ~19 J/TH rating makes it suitable for SHA‑256 mining in small to mid‑scale operations.

Key Specifications

• Hashrate: 190 TH/s (±3%)
• Power Consumption: ~3600 W (±5%)
• Power Efficiency: ~19 J/TH
• Algorithm/Coins: SHA‑256 | BTC, BCH, BSV
• Cooling: Air‑cooled fans
• Noise Level: ~75 dB
• Networking: RJ45 Ethernet 10/100M
• Dimensions: 400 × 195 × 290 mm
• Weight: ~15–17 kg
• Voltage: 220–277 V AC
• Operating Temperature: 0–45 °C

🛒 Purchasing Guidelines

The Antminer T21 typically costs $2,000–$2,300 per unit, depending on batch and reseller. In addition, Bitmain accepts payments in USD, BTC, ETC, USDC, and USDT. Orders ship on a SPOT basis within 10–30 working days, ensuring timely deployment. However, buyers must prepare customs documentation because Bitmain does not allow cancellations or refunds after submission.

🚚 Shipping Details

Bitmain dispatches Antminer T21 units on a first‑paid, first‑shipped basis, rewarding early payment with priority delivery. Furthermore, customers handle customs clearance, while Bitmain provides Certificates of Conformity for compliance.

🛡 Warranty

Each Antminer T21 carries a 365‑day warranty. Bitmain covers replacement shipping costs during this period. Nevertheless, improper installation, unauthorized modifications, or resale void the warranty.

⚠️ Buyer Considerations

• Air‑cooled design suits smaller farms or entry‑level setups.
• Profitability depends not only on Bitcoin’s price but also on network difficulty and electricity rates.
• Noise levels (~75 dB) require proper ventilation and sound management.
• Lower upfront cost compared to S21 makes it attractive for budget‑conscious miners.