Product Overview

The ElphaPex DG2+ 20.5G is the top-tier variant in ElphaPex’s DG2+ Scrypt mining series, delivering 20.5 GH/s at 3,900W for Litecoin (LTC) and Dogecoin (DOGE) merged mining. As the highest-hashrate air-cooled Scrypt miner in ElphaPex’s current lineup, the DG2+ 20.5G offers exceptional per-unit LTC and DOGE output — making it the choice for commercial operations where maximising Scrypt hashrate from each physical unit is the primary objective.

The DG2+ series represents an efficiency improvement over the standard DG2 series, with the DG2+ 20.5G achieving 20.5 GH/s at 3,900W versus the DG2 18Gh’s 18 GH/s at 3,960W. This means the DG2+ 20.5G delivers approximately 14% more hashrate at slightly lower absolute power draw — a meaningful improvement in both output and efficiency that makes it the preferable choice when both units are available at comparable pricing.

For South African large-scale Scrypt mining operations, the DG2+ 20.5G represents the current peak of air-cooled single-unit Scrypt performance. Its 3,900W draw requires the same industrial electrical infrastructure as the DG2 18Gh, but delivers higher hashrate output per unit — reducing the number of units, circuits, and rack slots needed to achieve a target Scrypt hashrate.

Key Features

• 20.5 GH/s Scrypt Hashrate (±5%): The highest single-unit Scrypt hashrate in ElphaPex’s air-cooled lineup. Outperforms both the DG2 18Gh and all L9 variants in raw per-unit LTC and DOGE merged mining output.
• 3,900W Power Consumption: Slightly lower absolute power draw than the DG2 18Gh despite delivering 2.5 GH/s more hashrate — representing a genuine efficiency improvement in the DG2+ series.
• Superior Efficiency at ~0.19 J/MH: Improved efficiency over the DG2 18Gh, making the DG2+ 20.5G the better choice for electricity-cost-conscious Scrypt mining operations comparing units at similar price points.
• Dual LTC + DOGE Merged Mining: The Scrypt algorithm enables simultaneous merged mining of both Litecoin and Dogecoin. Both coins earned from every share submitted, with no additional power cost.
• Air-Cooled Industrial Design: High-speed axial fans in a front-to-back airflow configuration. Designed for rack deployment in purpose-built, well-ventilated mining facilities.
• Standard Rack Form Factor: Compatible with standard ASIC mining racks for dense commercial deployment.
• Ethernet Management Interface: Standard RJ45 connectivity with web-based pool configuration, monitoring, and firmware management.

Technical Specifications

• Algorithm: Scrypt
• Supported Coins: Litecoin (LTC), Dogecoin (DOGE), and other Scrypt-based cryptocurrencies
• Hashrate: 20.5 GH/s (±5%)
• Power Consumption: 3,900W (±5%)
• Power Efficiency: ~0.19 J/MH
• Cooling: Air-cooled, high-speed axial fans
• Input Voltage: 200–240V AC, 50/60 Hz
• Networking: 1× RJ45 Ethernet
• Operating Temperature: 0°C to 40°C
• Dimensions: Confirm with supplier at time of purchase
• Net Weight: Confirm with supplier at time of purchase
• Power Supply: Confirm inclusion status at time of purchase

Power & Installation Notes

The ElphaPex DG2+ 20.5G draws 3,900W continuously. South African installations require compliance with SANS 10142, with all circuits certified by a registered electrician. This is firmly in the industrial mining category.

A dedicated 32A single-phase circuit is the minimum requirement. For multi-unit deployments, three-phase power distribution is recommended for balanced load management. South Africa’s 230V / 50Hz supply is within the unit’s 200–240V input range. Confirm PSU compatibility with 230V input before installation.

Load shedding at nearly 4 kW is not manageable on residential inverter systems. Commercial generator capacity or industrial-scale battery backup would be required to maintain operations during load shedding at this power level. Operators should factor expected downtime per day into their operating models and financial projections.

Industrial ventilation is essential. The DG2+ 20.5G generates significant heat output. Dedicated inline duct fans, wall-mounted extraction, or commercial HVAC must maintain ambient room temperatures below 40°C for continuous reliable operation. Thermal throttling will occur if inlet air temperatures approach this threshold.

Electricity Cost Context — South Africa

At Eskom’s approximate residential reference tariff of R2.80/kWh, the monthly electricity operating cost for the ElphaPex DG2+ 20.5G is estimated as follows:

(3,900 ÷ 1,000) × 24 × 30 × 2.80 = R7,862.40 per month

This is an operating cost estimate only — not a profitability projection. At approximately R7,862/month in electricity, the DG2+ 20.5G delivers more hashrate per rand of electricity cost compared to the DG2 18Gh (approximately R7,983/month at 18 GH/s). The DG2+ 20.5G’s better efficiency means lower electricity cost per unit of Scrypt hashrate — an advantage that compounds over time in a commercial mining operation. Actual tariffs vary by municipality and supply category.

Ideal Use Cases

• Maximum-output commercial Scrypt mining: Operators who need the highest single-unit LTC and DOGE merged mining output from each rack slot will find the DG2+ 20.5G the top choice in the air-cooled Scrypt category.
• Efficiency-focused Scrypt fleet upgrades: Operations upgrading from L9-series, DG1+, or DG2 18Gh hardware will achieve both higher hashrate and better efficiency per unit by transitioning to the DG2+ 20.5G platform.
• Commercial operations with renewable energy: South African Scrypt mining operators with access to PPA agreements, wheeling arrangements, or large solar generation can leverage the DG2+ 20.5G’s leading efficiency to maximise LTC/DOGE output at competitive per-kWh electricity costs.
• Large-scale LTC/DOGE mining farms: For operations aiming to build substantial pool hashrate contribution in the Scrypt network, the DG2+ 20.5G provides the highest per-unit output to achieve target pool hashrate with fewer units, circuits, and physical space.

Frequently Asked Questions

Does the ElphaPex DG2+ 20.5G work on South African power?
Yes. South Africa’s 230V / 50Hz grid supply is within the unit’s 200–240V input range. A dedicated 32A+ circuit certified by a registered electrician is required. Confirm PSU compatibility at time of purchase.

How does the DG2+ 20.5G compare to the DG2 18Gh?
The DG2+ 20.5G delivers 2.5 GH/s more hashrate at 60W less power consumption — representing approximately 14% more hashrate at slightly better efficiency. The DG2+ is the superior unit when available at a comparable price point.

What pool should I use for LTC/DOGE merged mining?
Major Scrypt pools supporting LTC+DOGE merged mining include AntPool, ViaBTC, F2Pool, and Litecoinpool.org. Configure the pool stratum URL in the DG2+’s web interface and enable merged DOGE mining in your pool account settings.

Can the DG2+ handle load shedding in South Africa?
Not on residential inverter systems. Commercial generator backup or industrial battery infrastructure is required at nearly 4 kW. Factor load-shedding downtime into your operational planning.

What is the difference between the DG2 and DG2+ series?
The DG2+ series delivers higher hashrate at improved efficiency compared to the DG2 series. The DG2+ 20.5G achieves 20.5 GH/s at 3,900W versus the DG2 18Gh’s 18 GH/s at 3,960W — more output per unit and better J/MH efficiency.

What’s Included

• 1× ElphaPex DG2+ 20.5G mining unit
• Power supply (confirm inclusion at time of purchase)
• Power cables
• Quick-start documentation