GPU Mining Hashrate Comparison Guide for Ethereum and CFX

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As cryptocurrency markets experience renewed momentum, interest in GPU mining has surged. Many newcomers are exploring how different graphics cards perform in terms of hashrate and power consumption—especially for profitable coins like Ethereum (ETH) and Conflux (CFX). While online data exists, much of it is outdated or inaccurate. This guide delivers up-to-date, real-world mining performance metrics for popular NVIDIA and AMD GPUs, based on extensive testing by experienced miners.

All data reflects real-world mining conditions as of the latest updates and will be periodically revised to maintain accuracy. We focus on ETH and CFX, currently among the most profitable Proof-of-Work coins for GPU mining.

Understanding GPU Mining Performance

GPU mining performance depends on several factors:

⚠️ Note: Hashrate values are per single GPU. Platform power (motherboard, CPU, SSD, etc.) typically adds 100–200W. Always size your PSU with a 20–30% buffer to ensure stability, especially since many power supplies are overrated.

AMD GPU Ethereum (ETH) Mining Performance

AMD cards remain strong contenders for Ethereum mining. Here’s a performance ranking from lowest to highest hashrate:

AMD ETH Mining Hasrate & Power Consumption

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AMD GPUs generally do not perform well on CFX, as the algorithm favors NVIDIA’s architecture and higher VRAM capacity. Stick to ETH for optimal returns with A-series cards.

NVIDIA GPU Ethereum (ETH) Mining Performance

NVIDIA dominates the high-end mining segment. Below is a ranked list of popular models based on ETH hashrate and efficiency:

NVIDIA ETH Mining Hasrate & Power Consumption

NVIDIA’s Ampere series offers superior hashrate per watt, making them ideal for large-scale mining operations.

NVIDIA GPU Conflux (CFX) Mining Performance

Conflux Network’s PoW algorithm is optimized for NVIDIA GPUs with 6GB+ VRAM, especially RTX 20 and 30 series cards. While ETH remains more profitable for most, CFX can offer better returns during price surges or network difficulty shifts.

NVIDIA CFX Mining Hasrate & Power Consumption

💡 Pro Tip: Monitor CFX/USD price trends and network difficulty. A short-term spike can make CFX more profitable than ETH for high-end NVIDIA cards.

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Frequently Asked Questions (FAQ)

❓ Is GPU mining still profitable in 2025?

Yes, under the right conditions. Profitability depends on electricity cost, coin price, network difficulty, and hardware efficiency. Cards like the RTX 3060, RX 6800, and RTX 3080 remain viable if power costs are below $0.12/kWh.

❓ Why can’t AMD GPUs mine CFX efficiently?

Conflux’s algorithm (Octopus) requires high memory bandwidth and large VRAM buffers—areas where modern NVIDIA GPUs outperform AMD’s older architectures. Most AMD cards lack sufficient VRAM or driver optimizations for competitive CFX mining.

❓ How do I calculate my mining profit?

Use the formula:
(Hashrate × Block Reward × Uptime) / Network Difficulty – Power Cost
Factor in electricity ($/kWh), pool fees (~1%), and hardware depreciation. Online calculators can help, but real-world results vary.

❓ Should I overclock my mining GPUs?

Yes—but cautiously. Proper overclocking can boost hashrate by 5–15% while reducing power draw. Always test stability over 24–48 hours and monitor temperatures (keep below 75°C).

❓ What happens to my mining rig after Ethereum PoS?

While Ethereum has transitioned to Proof-of-Stake, many altcoins like CFX, RVN, and ERG still rely on GPU mining. Rigs can be repurposed for these networks or used for AI training, rendering, or gaming.

❓ Is building a mining rig worth it now?

Only if you have access to cheap electricity (<$0.10/kWh) and can acquire hardware at or near MSRP. Due to past market inflation, many older GPUs are overpriced. Focus on efficiency: MH/s per watt matters more than raw hashrate.

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Final Thoughts & Recommendations

GPU mining remains a viable option for tech-savvy individuals with low-cost power and efficient hardware. While the days of easy profits are gone, strategic miners can still generate returns by:

👉 Stay ahead of market shifts—track prices and trade mined assets efficiently.

🔒 Reminder: Cryptocurrency investments and mining carry significant risk. Always conduct thorough research and never invest more than you can afford to lose.

This guide will be updated regularly to reflect changes in network difficulty, coin values, and new mining developments—ensuring you have the latest data to make informed decisions.