With the rising value of cryptocurrencies like Ethereum, mining remains a popular way to participate in the digital economy. For those interested in joining the mining community, selecting the right graphics card is crucial for optimal performance and efficiency. Recent benchmark tests by the reputable hardware outlet Tom's Hardware provide valuable insights into the mining capabilities of high-end NVIDIA and AMD GPUs. This article breaks down their findings to help you make an informed decision.
Understanding Ethereum Mining Performance
Ethereum mining relies on a process called proof-of-work, which requires significant computational power. The mining performance of a GPU is measured in hash rate (MH/s), which indicates how many calculations the card can perform per second. However, raw hash rate isn't the only factor to consider. Power consumption (measured in watts) and thermal performance are equally important, as they impact long-term profitability and hardware durability.
Test Platform Overview
Tom's Hardware conducted their tests using a standardized setup to ensure fair comparisons:
- Processor: Intel i9-9900K
- Motherboard: MSI MEG Z390 Ace
- Memory: Corsair 2x16GB DDR4-3200 CL16
- Storage: XPG SX8200 Pro 2TB
- Power Supply: Seasonic Focus 850 Platinum
- Cooling: Corsair Hydro H150i Pro RGB
- Frame: OpenBenchTable
It's worth noting that this configuration is more robust than a typical mining rig. For dedicated mining setups, experts recommend prioritizing a high-quality power supply and efficient cooling over expensive CPUs or motherboards. The tests were performed using NiceHash Miner software targeting Ethereum mining.
Hash Rate Performance: NVIDIA vs. AMD
Hash rate is the primary metric for evaluating a GPU's mining capability. Higher hash rates translate to more mining output.
Top Performers in Hash Rate:
- NVIDIA RTX 3090 FE Tuned: 106.5 MH/s
- NVIDIA RTX 3090 FE: Slightly lower than the tuned version
- AMD RX 6900 XT, RX 6800 XT, RX 6800: All around 64.6 MH/s
NVIDIA's RTX 3090 clearly leads in raw performance, making it a top choice for miners prioritizing maximum output. AMD's RX 6000 series cards, while competitive, cluster around a similar hash rate, showing less differentiation among models.
Power Consumption and Efficiency
A high hash rate is meaningless if the GPU consumes excessive power. Efficiency—measured in hash rate per watt (MH/s per watt)—determines real-world profitability.
Power Draw Findings:
- NVIDIA RTX 3090 FE: 359.3W
- NVIDIA RTX 3080 FE: 330.3W
- AMD RX 6900 XT: Over 300W
- AMD RX 6800 XT: 281.1W
Efficiency Rankings:
- NVIDIA RTX 3060 Ti FE Tuned: 0.524 MH/s per watt
- NVIDIA RTX 3070 FE Tuned
- NVIDIA RTX 3060 Ti Tuned
- AMD RX 6800 Tuned (ranked sixth)
Despite its high hash rate, the RTX 3090 isn't the most efficient card. Mid-range options like the RTX 3060 Ti and RTX 3070 offer better efficiency, making them ideal for miners focused on long-term energy savings. AMD's best contender, the RX 6800 Tuned, trails behind NVIDIA's offerings.
Thermal Performance and Cooling
Heat management is critical for mining rigs. Excessive temperatures can reduce hardware lifespan and increase failure rates.
Notable Thermal Results:
- AMD RX 6800 XT and RX 6900 XT: Exceeded 80°C
- NVIDIA cards generally ran cooler under similar conditions
AMD's higher temperatures may explain why they are less frequently recommended for mining operations. Effective cooling solutions are essential, especially for AMD GPUs, to maintain stability and longevity.
Key Takeaways for Miners
- For Maximum Output: Choose NVIDIA RTX 3090, but be prepared for high power costs.
- For Best Efficiency: Opt for NVIDIA RTX 3060 Ti or RTX 3070 models.
- For Budget-Conscious Builds: Consider AMD RX 6800 series, but invest in robust cooling.
Tom's Hardware emphasizes that these results are starting points. Real-world mining can be optimized further through software tweaks and hardware adjustments. For those serious about mining, experimenting with settings is key to maximizing returns.
👉 Explore advanced mining optimization strategies
Frequently Asked Questions
What is the most important factor in choosing a mining GPU?
Efficiency (hash rate per watt) is crucial because it directly impacts electricity costs and profitability. A card with high hash rate but excessive power use may be less profitable than a moderately powerful but efficient GPU.
Can I use gaming GPUs for mining?
Yes, most mining rigs use consumer gaming GPUs. However, mining puts continuous load on the card, so adequate cooling and power supply are essential to prevent damage.
How does cooling affect mining performance?
Better cooling maintains consistent performance and extends GPU life. Overheating can cause thermal throttling (reduced speeds) or hardware failure.
Why are AMD GPUs less popular in mining?
While competitive in hash rate, AMD cards often consume more power and run hotter than NVIDIA alternatives, making them less efficient for 24/7 mining operations.
Is Ethereum mining still profitable?
Profitability depends on Ethereum's value, electricity costs, and hardware efficiency. Use online calculators to estimate potential earnings based on your setup.
Should I buy used mining GPUs?
Used GPUs from mining rigs may have wear from continuous use. Test thoroughly and ensure they have been well-maintained with proper cooling.
Source: Tom's Hardware