Bitmain Antminer S21

Bitmain Antminer S21 – 151 TH/s Bitcoin ASIC Miner (17.5 J/TH)

The Bitmain Antminer S21 is a next-generation Bitcoin ASIC miner engineered for maximum efficiency and long-term mining performance. Powered by the advanced BM1368 chip, the S21 delivers an impressive 200 TH/s hashrate with an energy efficiency of just 17.5 J/TH, making it one of the most efficient SHA-256 miners ever produced by Bitmain.

Designed as the successor to the popular S19 series, the Antminer S21 significantly reduces power consumption per terahash while increasing total output—ideal for professional mining farms and serious Bitcoin miners.

Performance Overview

• Hashrate: 151 TH/s

• Power Efficiency: 17.5 J/TH

• Algorithm: SHA-256

• Supported Coins:

  • Bitcoin (BTC)

  • Bitcoin Cash (BCH)

  • Bitcoin SV (BSV)

The S21 represents a major leap forward in mining efficiency compared to previous-generation ASIC miners.

BM1368 Chip Technology

At the heart of the Antminer S21 is Bitmain’s BM1368 chip, built using a cutting-edge semiconductor fabrication process. This advanced chip design offers:

• Smaller, faster transistors

• Reduced power loss

• Improved thermal efficiency

• High parallel processing capability

These improvements allow the S21 to perform massive amounts of hashing calculations simultaneously while consuming less energy—delivering industry-leading efficiency.

Key Specifications

Comparison with Previous-Generation Miners

The S21 delivers significantly more hashrate with lower energy cost per TH, improving long-term profitability.

Miner Classification

• Type: Industrial Bitcoin ASIC Miner

• Cooling: Air-cooled

• Best For: Mining farms, hosting facilities, professional operations

• Not Recommended For: Home use (due to power draw and noise)

Warranty

When ordering a mining rig, you agree that it is customized for optimal mining performance.

• Mining rig parts come with a 360-day factory warranty

• Warranty coverage follows Bitmain official warranty guidelines

Terms of Sale

• Payment proof must be provided within 24 hours of placing an order

• A unit is only reserved after payment is received

• All sales are final – no refunds will be granted

Shipping & Delivery

• Dispatch Time: Typically within 7 working days

• Courier: DHL

• Delivery Times:

  • Europe Express: 1–3 days

  • Europe Economy: 3–6 days

  • USA & Asia: 2–5 days

• Full customer support before and after purchase

Why Choose the Antminer S21?

Industry-leading 17.5 J/TH efficiency
Powerful 151 TH/s hashrate
Advanced BM1368 chip technology
Lower operational costs compared to S19 generation
Built for long-term professional mining

Product Video

Watch the Antminer S21 in action: