Bitmain Antminer S21+ Hydro 358T – Boosted Hydro-Cooled Bitcoin Miner

The Bitmain Antminer S21+ Hydro 358T is a high-performance, hydro-cooled SHA-256 ASIC miner designed for demanding Bitcoin (BTC) and Bitcoin Cash (BCH) operations. Delivering up to 358 TH/s of hashrate at roughly 4.9 kW power draw, it gives you serious hashpower in a compact, liquid-cooled package.

Using a closed-loop hydro-cooling system, the S21e Hydro 338T keeps chip temperatures under tight control while reducing mechanical stress and vibration compared to large, high-speed fans. That makes it a strong fit for professional mining farms, containers and hosted environments where you already have three-phase power and industrial cooling infrastructure in place.

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What the Bitmain Antminer S21e+Hydro 358T mines

• Algorithm: SHA-256

• Primary coins:

  • Bitcoin (BTC)

  • Bitcoin Cash (BCH)

• Other SHA-256 coins (pool dependent):

  • Bitcoin SV (BSV) and other SHA-256–based altcoins

With the right pool, you can direct the S21+ Hydro 358T to any SHA-256 chain, but most miners will use it primarily to mine BTC for maximum liquidity.

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Key features

• Up to 358 TH/s SHA-256 hashrate
  Provides up to 358 terahash per second of SHA-256 performance, giving you a noticeable step up in hashpower within the S21+ Hydro family.

• Efficient power usage around 4.9 kW
  Typical wall power is about 4 896 W, yielding energy efficiency in the region of around 17 joules per terahash, which helps keep operating costs competitive over the long term.

• Hydro cooling for stable, consistent operation
  The integrated hydro loop channels coolant through the hashboards to keep them within an optimal temperature band, enabling denser deployments and more stable clocks than comparable air-cooled units.

• Substantially quieter than air-cooled rigs
  With a typical noise level of around 50 dB, the S21e Hydro 338T runs far quieter than most high-end air-cooled ASICs. It still belongs in a dedicated mining or hosting environment, but the reduced noise gives you much more flexibility in how and where it’s deployed.

• Engineered for 24/7 uptime
  Designed as an industrial miner, the S21e Hydro 338T is built to run continuously when paired with suitable three-phase power, clean coolant and a properly sized heat-exchange system.

• Straightforward networking
  Connect it to your network via Ethernet, access the built-in web dashboard, add your pools and wallet addresses, and you’re ready to start hashing.

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Technical specifications

Use this as a spec table on the product page.

• Manufacturer: Bitmain

• Model: Antminer S21+Hydro 358T

• Algorithm: SHA-256

• Supported coins: Bitcoin (BTC), Bitcoin Cash (BCH), Bitcoin SV (BSV) and other SHA-256–based coins (pool dependent)

• Hashrate: Up to 358 TH/s (typical variance small)

• Power consumption: Approximately 4 896 W at the wall

• Energy efficiency: Around 17 J/TH

• Cooling: Hydro cooling (requires external liquid-cooling loop and radiator/heat exchanger)

• Noise level: Around 50 dB

• Network interface: RJ45 Ethernet 10/100M

• Input voltage: Three-phase AC, typically 380–415 V, 50/60 Hz

• Recommended inlet water temperature: Approximately 20–50 °C

• Typical coolant flow rate: Around 8–10 litres per minute (follow Bitmain’s guidelines for your setup)

• Operating temperature (environment): Roughly 0 – 40 °C

• Operating humidity: Roughly 5 – 95% RH, non-condensing

• Miner dimensions (L × W × H): Approximately 410 × 170 × 209 mm

• Net weight: Around 12.8 kg

 

What’s in the box

• Bitmain Antminer S21+ Hydro 358T miner

• Compatible power connectors or pigtails (if supplied)

• Basic setup and quick-start information

Important installation note:
This miner is not designed to plug into a normal wall socket. It must be connected to a suitable hydro-cooling loop and three-phase power supply. Make sure you have appropriate electrical and cooling capacity on-site, or plan to use a professional hosting provider.