Understanding Ethash Mining Algorithm: Specifications and Requirements
Ethash is a robust Proof-of-Work (PoW) algorithm employed by leading cryptocurrencies like Ethereum, MOAC, Expanse, and Pirl. Its uniqueness lies in the use of DAG files, which are loaded into GPU memory at launch. Key characteristics include:
- DAG File Growth: Expands by 8MB every 30,000 blocks (epoch change).
Hardware Requirements:
- GPUs: NVIDIA/AMD cards with ≥4GB memory (3GB is obsolete for Ethereum).
- ASICs: Also supported but less common due to Ethash’s memory-intensity.
- Profitability Factors: Ethereum’s transaction fees are integrated into mining calculators for accurate ROI projections.
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Profitability Analysis of Ethash Mining
| Cryptocurrency | Current Difficulty | Net Hashrate (3h) | 24h Profit (USD) | Exchange Rate (BTC) | Network Activity |
|------------------|--------------------|-------------------|------------------|----------------------|------------------|
| Ethereum PoW (ETHW) | 271.17 T | 19.89 Th/s | $15.29 (11.52 ETHW) | 0.00001217 BTC | $9.78M |
Example: A rig with 300× NVIDIA 3070 GPUs (18.3 Gh/s) yields ~$15.29 daily.
Supported Mining Software
Popular miners compatible with Ethash:
- GPU Miners: PhoenixMiner, GMiner, TeamRedMiner.
- ASIC Miners: Limited options due to algorithm design.
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FAQ: Ethash Mining
Q1: Why does Ethash require large GPU memory?
A1: DAG files grow over time, necessitating ≥4GB VRAM to store computational data.
Q2: How often does the DAG file update?
A2: Every 30,000 blocks (~5.2 days for Ethereum).
Q3: Is Ethash ASIC-resistant?
A3: Partially—it favors GPUs but ASICs exist (less cost-effective).
Q4: What’s the minimum hardware for Ethereum mining?
A4: A 4GB GPU (e.g., RX 470, GTX 1060) and reliable cooling.
Q5: How are mining profits calculated?
A5: Based on hashrate, electricity costs, and current block rewards + fees.
Q6: Can I mine ETHW with the same setup as ETH?
A6: Yes—ETHW uses identical Ethash parameters post-merge.
Key Takeaways
- Ethash balances decentralization and security via memory-bound computations.
- Regularly update mining software to accommodate DAG growth.
- Use profitability calculators to adjust for dynamic network conditions.