The Bitmain Antminer S21+ Hyd (358Th/s) is a powerful hydro-cooled Bitcoin ASIC miner built for the SHA-256 algorithm, specifically optimized for Bitcoin (BTC) mining in professional and industrial-scale environments.

Delivering a strong 358 TH/s hashrate with a power draw of 5370W, the S21+ Hyd maintains an efficiency rating of 15 J/TH, making it an excellent choice for miners seeking higher hashrate density while keeping operational costs under control.

Released in August 2025, this model features Bitmain’s factory-engineered hydro-cooling system, enabling stable 24/7 operation with significantly reduced noise and superior thermal performance compared to traditional air-cooled miners. Hydro cooling allows for higher rack density, improved hardware longevity, and cleaner deployment in modern mining data centers.

As part of the Antminer S21+ Hydro series, the 358Th variant is ideal for large-scale mining farms, hosting providers, and institutional operators with liquid-cooling infrastructure looking to scale efficiently while maintaining reliability.

Key Features

• 358 TH/s Bitcoin hashrate

• Efficient 15 J/TH power performance

• Factory-integrated hydro-cooling

• Low noise output (50 dB)

• Optimized for SHA-256 / BTC mining

• Designed for enterprise & hosted mining facilities

• Member of Bitmain’s Antminer S21+ Hydro lineup