Claymore's Dual Ethereum GPU Miner: Solo and Dual Mining Setup Guide

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Cryptocurrency mining has evolved significantly over the years, and while Ethereum (ETH) officially transitioned from Proof-of-Work (PoW) to Proof-of-Stake (PoS) in September 2022, the tools and techniques developed during the PoW era remain highly relevant for mining other blockchain-based cryptocurrencies. One such powerful tool is Claymore's Dual Ethereum GPU Miner, a widely respected mining software known for its efficiency, flexibility, and advanced features.

This guide dives into the core functionality of Claymore’s miner, focusing on solo mining (ETH/ETC) and dual mining (ETH + DCR or other altcoins), offering practical setup instructions and optimization tips that are still applicable today for coins like Ethereum Classic (ETC), Musicoin (MC), Expanse (EXP), and more.

Why Claymore's Miner Still Matters in 2025

Even though ETH is no longer mineable via GPU, Claymore's Dual Ethereum GPU Miner remains a benchmark in GPU mining software design. Its architecture supports multiple algorithms and dual-mining capabilities, making it ideal for maximizing hardware utilization when mining alternative cryptos.

The miner was originally designed to work with both AMD and NVIDIA GPUs and introduced one of the first stable implementations of dual mining—allowing users to simultaneously mine two different coins using the same hash power. This concept continues to influence modern mining software.

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Core Features of Claymore's Miner

These features make it an excellent reference point for understanding GPU mining workflows—even if you're now applying them to newer platforms or forks.

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Claymore's Dual Ethereum GPU Miner, GPU mining, dual mining, solo mining, mining setup, ETH mining, DCR mining, and mining configuration.

How to Set Up Solo Mining (e.g., ETC or Legacy ETH)

Solo mining refers to using your GPU power exclusively for one cryptocurrency. Although ETH is no longer viable, this method works perfectly for ETC and similar PoW chains.

Step-by-Step Configuration

  1. Download and Extract
    Obtain the latest version of Claymore’s miner from a trusted source and extract the ZIP file to a dedicated folder.
  2. Create or Edit start.bat
    Right-click in the folder → New → Text Document → Rename to start.bat. Right-click → Edit with Notepad.

  3. Add GPU Optimization Commands
    These commands help stabilize performance across both AMD and NVIDIA cards:

    setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100

  4. Enter Mining Command
    Below the above lines, add the main execution command:

    EthDcrMiner64.exe -mode 1 -epool us1-etc.ethermine.org:4444 -ewal YOUR_ETC_WALLET_ADDRESS -eworker rig01
    • -mode 1: Enables solo mining mode
    • -epool: Specifies the primary pool address
    • -ewal: Your wallet address
    • -eworker: Worker name (use alphanumeric only)

✅ Ensure all parameters are on a single line without line breaks unless using the caret (^) symbol for readability.

How to Configure Dual Mining (Primary + Secondary Coin)

Dual mining allows your GPU to split resources between two algorithms—boosting overall profitability by earning secondary income alongside your main coin.

Supported Combinations

⚠️ Note: You cannot dual-mine two primary coins or two secondary coins—only one from each group.

Setup Instructions

Follow steps 1–3 from the solo mining section, then replace the final command with:

EthDcrMiner64.exe -mode 0 -epool us1-etc.ethermine.org:4444 -ewal YOUR_ETC_WALLET -eworker rig01 -dpool stratum+tcp://dcr.coinmine.pl:2222 -dwal YOUR_DCR_WALLET -dpsw x

Parameter Breakdown:

For non-DCR secondary coins, add:

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Frequently Asked Questions (FAQ)

Q1: Is Claymore's Dual Miner still usable after Ethereum’s PoS transition?

Yes. While you can no longer mine ETH via PoW, the software remains fully functional for Ethereum Classic (ETC), Expanse, Musicoin, and other compatible PoW blockchains.

Q2: Does dual mining reduce primary coin performance?

Generally, yes—expect a 5–15% drop in primary hash rate depending on GPU model and settings. However, the added income from the secondary coin may offset this loss, especially with high-efficiency combinations like ETC + DCR.

Q3: Can I use Claymore with NVIDIA GPUs?

Absolutely. Though initially optimized for AMD, later versions support NVIDIA cards effectively. Always update drivers and monitor stability under load.

Q4: What does the 1% developer fee mean?

It means approximately 1 minute out of every 100 is used to mine for the developer. This is standard across many open-source miners and helps sustain development.

Q5: How do I make long commands more readable in .bat files?

Use the caret (^) at the end of a line to continue on the next line:

EthDcrMiner64.exe ^
-mode 0 ^
-epool pool.example.com:3333 ^
-ewal YOUR_WALLET

This improves readability without breaking execution.

Q6: Where should I get wallets for DCR or SC?

Optimization Tips & Best Practices

Final Thoughts

Claymore's Dual Ethereum GPU Miner laid the foundation for efficient, multi-algorithm GPU mining. Even in 2025, its configuration logic influences current tools and practices. Whether you're exploring legacy systems or optimizing setups for alternative PoW networks, understanding this software provides valuable insight into maximizing mining ROI.

While newer miners have emerged, the principles taught here—batch scripting, parameter tuning, dual-algo balancing—remain essential skills for any serious miner.

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