Product Overview

The Bitmain Antminer L11 20G is the flagship model in Bitmain’s latest Scrypt ASIC miner series, delivering 20 GH/s for Litecoin (LTC) and Dogecoin (DOGE) merged mining. As Bitmain’s answer to the ElphaPex DG2+ 20.5G and VolcMiner D1 18.5G at the top of the air-cooled Scrypt hashrate market, the L11 20G represents the most capable Scrypt ASIC in Bitmain’s current lineup — building on the L9 series with increased hashrate and competitive efficiency.

The L11 20G delivers the highest per-unit Scrypt output available from Bitmain in an air-cooled configuration. At 20 GH/s, operators achieve more merged LTC/DOGE mining contribution per rack slot than any Bitmain L9 variant (max 17 GH/s), making it the natural upgrade target for existing L9 fleet operators looking to improve pool contribution efficiency.

For South African commercial LTC and DOGE mining operations, the L11 20G represents the current top of Bitmain’s Scrypt offering. Its 3,600W power draw places it in the industrial mining infrastructure category — requiring dedicated 32A circuits and industrial-grade ventilation — but for operations with the right setup, it delivers market-leading per-unit Scrypt contribution from the world’s most established ASIC manufacturer.

Key Features

• 20 GH/s Scrypt Hashrate (±5%): Bitmain’s highest single-unit Scrypt hashrate. Exceeds the entire L9 series in per-unit output, delivering more merged LTC/DOGE contribution per rack slot.
• Dual LTC + DOGE Merged Mining: Simultaneous merged mining of Litecoin and Dogecoin — both coins earned from every submitted share at no additional power cost.
• 3,600W Power Consumption: Industrial-grade power draw consistent with the top-tier Scrypt miner category. Requires dedicated 32A circuits and industrial electrical infrastructure.
• Competitive Efficiency ~0.18 J/MH: Leading efficiency for an air-cooled Scrypt miner at this hashrate tier — better than the Bitmain L9 series and competitive with the best available air-cooled Scrypt hardware.
• Air-Cooled Industrial Design: High-speed axial fans in a front-to-back airflow configuration for rack deployment in ventilated mining facilities.
• Bitmain Quality and Support: Manufactured by Bitmain — the world’s leading ASIC manufacturer — with established firmware ecosystem, pool compatibility, and after-sales infrastructure.
• Standard Ethernet Management: RJ45 connectivity with web-based management for pool configuration, monitoring, and firmware updates.

Technical Specifications

• Algorithm: Scrypt
• Supported Coins: Litecoin (LTC), Dogecoin (DOGE), and other Scrypt-based cryptocurrencies
• Hashrate: 20 GH/s (±5%)
• Power Consumption: ~3,600W (±5%)
• Power Efficiency: ~0.18 J/MH
• Cooling: Air-cooled, high-speed 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
• Power Supply: Confirm inclusion at time of purchase

Power & Installation Notes

The Antminer L11 20G draws approximately 3,600W continuously. South African installations must comply with SANS 10142 and be certified by a registered electrician. A dedicated 32A single-phase circuit is required as a minimum. For multi-unit deployments, three-phase power distribution is recommended.

South Africa’s 230V / 50Hz supply is within the unit’s 200–240V input specification. No transformer required. Confirm PSU compatibility with 230V input at time of purchase.

Load shedding at 3,600W is not manageable with residential inverter systems. Commercial generator backup or planned downtime during outages is required. Factor expected load-shedding hours into operational planning.

Industrial ventilation is essential. Active extraction must maintain ambient temperatures below 40°C for continuous reliable operation at full hashrate.

Electricity Cost Context — South Africa

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

(3,600 ÷ 1,000) × 24 × 30 × 2.80 = R7,257.60 per month

This is an operating cost estimate only. The L11 20G’s leading efficiency (~0.18 J/MH) means a lower electricity cost per GH/s versus the L9 series — improving the operational economics for commercial Scrypt operators. Actual tariffs vary by municipality and supply category.

Ideal Use Cases

• Commercial LTC/DOGE mining operations: The L11 20G is designed for professional Scrypt mining farms with industrial power and purpose-built facilities.
• L9 fleet upgrades: Operators retiring L9-series hardware will achieve higher per-unit hashrate and better efficiency by upgrading to the L11 20G platform.
• Maximum per-slot Scrypt output: For operations needing maximum LTC/DOGE hashrate from a fixed rack slot count, the L11 20G delivers Bitmain’s highest single-unit Scrypt contribution.
• Diversified commercial mining: Operations already running Bitcoin (BTC) SHA-256 miners can add LTC/DOGE Scrypt exposure through L11 units within the same commercial facility infrastructure.

Frequently Asked Questions

Does the Antminer L11 20G work on South African power?
Yes. South Africa’s 230V / 50Hz supply is within the unit’s 200–240V input range. A dedicated 32A circuit certified by a registered electrician is required.

How does the L11 20G compare to the L9 17G?
The L11 20G delivers 20 GH/s at ~3,600W versus the L9 17G’s 17 GH/s at ~3,500W. The L11 offers approximately 18% more hashrate at slightly higher power with better efficiency (~0.18 vs ~0.206 J/MH). A meaningful improvement for fleet operators.

Which pool should I use?
AntPool, ViaBTC, F2Pool, and Litecoinpool.org support LTC+DOGE merged mining. Configure the stratum URL in the L11’s web interface and enable merged DOGE mining in your pool account.

Can the L11 20G handle load shedding?
Not on residential inverter systems. Commercial generator backup or planned downtime is required at 3,600W.

Is a PSU included?
Confirm PSU inclusion at time of purchase.

What’s Included

• 1× Bitmain Antminer L11 20G mining unit
• Power supply (confirm inclusion at time of purchase)
• Power cables
• Quick-start documentation