Product Overview

The Bitmain Antminer S21e Hydro 310T is a hydro-cooled Bitcoin (BTC) SHA-256 ASIC miner delivering 310 TH/s at approximately 3,410W. Part of Bitmain’s S21e hydro-cooled series, the S21e Hydro 310T replaces conventional high-speed fans with a liquid cooling manifold attached directly to the hashing boards — enabling higher sustained hashrate and excellent power efficiency while operating near-silently compared to air-cooled equivalents.

The S21e series represents Bitmain’s energy-efficient tier within the S21 hydro-cooled range. At 11 J/TH, the S21e Hydro 310T offers competitive per-TH energy consumption for its hashrate class. Liquid cooling removes thermal constraints that limit air-cooled designs, allowing the hashing chips to operate at sustained high performance without the throttling that high ambient temperatures cause in fan-cooled units.

For South African operators, the S21e Hydro 310T represents serious commercial Bitcoin mining infrastructure. The hydro-cooling loop requirement — including circulation pumps, piping, and external heat rejection (dry cooler or cooling tower) — means this unit is exclusively suited to large-scale commercial facilities with purpose-built cooling infrastructure. The high power draw (3,410W) also requires multi-phase electrical supply well beyond standard residential or light commercial installations.

Key Features

• 310 TH/s SHA-256 Hashrate (±3%): High-output Bitcoin mining contribution per unit. Hydro-cooling enables sustained high hashrate without the thermal constraints of air-cooled designs.
• Hydro-Cooled Architecture: Liquid cooling manifold replaces fans — enabling higher chip performance density, better sustained efficiency, and near-silent operation. Requires a closed-loop coolant infrastructure.
• ~11 J/TH Power Efficiency: Competitive efficiency for a high-hashrate hydro-cooled Bitcoin miner at this performance tier.
• 3,410W Power Consumption: High power draw requiring substantial multi-phase electrical infrastructure.
• Near-Silent Operation: Without high-speed fans, the S21e Hydro 310T operates near-silently — a meaningful benefit for noise-sensitive commercial deployments.
• S21e Platform Architecture: Energy-efficient tier within Bitmain’s S21 hydro series, balancing hashrate and operational efficiency.
• Standard Ethernet Management: Compatible with major Bitcoin mining pools and ASIC management platforms.

Technical Specifications

• Algorithm: SHA-256
• Supported Coins: Bitcoin (BTC), Bitcoin Cash (BCH), and other SHA-256 cryptocurrencies
• Hashrate: 310 TH/s (±3%)
• Power Consumption: ~3,410W (±5%)
• Power Efficiency: ~11 J/TH
• Cooling Type: Hydro-cooled (liquid cooling loop required)
• Noise Level: Near-silent (no fans)
• Input Voltage: 200–240V AC, 50/60 Hz (confirm three-phase requirements)
• Networking: 1× RJ45 Ethernet
• Power Supply: Confirm inclusion at time of purchase

Power & Installation Notes

The Antminer S21e Hydro 310T draws approximately 3,410W continuously — significantly above standard residential or light commercial electrical capacity. In South Africa, this unit requires certified three-phase power supply and a dedicated high-amperage circuit. All installation must comply with SANS 10142 and be certified by a registered electrician.

The hydro-cooling loop is the defining installation requirement for this unit. A complete system requires: circulation pumps, coolant piping, a heat exchanger manifold connecting to the miner, and a dry cooler or cooling tower to reject heat externally. This infrastructure represents a significant investment beyond the miner hardware — hydro-cooled miners are only practical for large-scale commercial operations with purpose-built facilities and professional cooling infrastructure installers.

Load shedding at 3,410W cannot be managed with any residential or commercial inverter system. Commercial generator capacity is required for continuous operation through South African load-shedding stages.

Electricity Cost Context — South Africa

At R2.80/kWh reference tariff, the estimated monthly electricity cost is:

(3410 ÷ 1,000) × 24 × 30 × 2.80 = R6874.56 per month

This is an operating cost estimate only — not a profitability projection. Commercial and industrial electricity tariffs may differ significantly from the residential reference rate. The S21e Hydro 310T’s leading efficiency translates to competitive electricity cost per TH/s at scale. Actual tariffs and demand charges vary by municipality and supply arrangement.

Ideal Use Cases

• Large-scale commercial Bitcoin mining farms: The S21e Hydro 310T is designed for professional operations with dedicated hydro-cooling infrastructure, industrial power supply, and purpose-built mining facilities.
• Maximum hashrate per square metre: Hydro-cooled miners enable higher deployment density than air-cooled equivalents — more TH/s per square metre of data centre or mining facility floor space.
• Noise-sensitive commercial deployments: Near-silent operation makes hydro-cooled miners suitable for facilities where industrial fan noise is a compliance or operational constraint.
• South African commercial renewable energy mining: Operations with access to PPA, wheeling, or large-scale solar generation can leverage the S21e Hydro 310T’s efficiency for competitive Bitcoin mining economics at scale.

Frequently Asked Questions

Does the S21e Hydro 310T require special plumbing?
Yes — a complete closed-loop liquid cooling system is required, including circulation pumps, coolant piping, heat exchanger manifold, and external heat rejection (dry cooler or cooling tower). This is a significant infrastructure project requiring specialist installers.

Does it work on South African power?
Yes, in terms of voltage compatibility (200–240V), but the 3,410W draw requires three-phase power supply and high-amperage circuits well beyond standard residential infrastructure. Certified electrician installation is mandatory.

Is the S21e Hydro 310T suitable for home or small-scale mining?
No. The hydro-cooling infrastructure requirement, extremely high power draw, and commercial facility requirements make this exclusively a large-scale commercial mining unit.

How does load shedding affect operations?
At 3,410W, load shedding cannot be managed with any standard inverter or UPS. Commercial generator capacity is required for uninterrupted operation during South African power outages.

What is the coolant specification?
Confirm coolant type, flow rate, and inlet temperature requirements with Bitmain’s technical documentation or your supplier at time of purchase.

What’s Included

• 1× Bitmain Antminer S21e Hydro 310T mining unit
• Cooling manifold/connections (confirm specifications at time of purchase)
• Power supply (confirm inclusion at time of purchase)
• Power cables
• Quick-start documentation