How to Mine Ethereum with AMD and Nvidia GPU

Learning how to mine ethereum with amd and nvidia gpu configurations—often referred to as "mixed rigs"—remains a core skill for miners looking to diversify their hardware portfolio. While the original Ethereum network transitioned to Proof-of-Stake (PoS) in 2022, the technical principles of managing multiple GPU architectures are essential for mining Ethash-based alternatives like Ethereum Classic (ETC). By combining the power of NVIDIA’s CUDA cores and AMD’s OpenCL capabilities, miners can hedge against hardware shortages and leverage the unique efficiency profiles of different manufacturers.

Fundamental Requirements for Mixed Mining Rigs

Building a stable environment for both AMD and NVIDIA cards requires more than just plugging them into a motherboard. The complexity arises from the way operating systems handle different driver stacks simultaneously. To succeed, you must ensure your underlying infrastructure can support high data throughput and consistent power delivery.

Hardware Selection

When selecting GPUs for a mixed rig, VRAM is the most critical factor. For Ethash-based coins, the DAG (Directed Acyclic Graph) file size dictates the minimum memory required. Currently, GPUs must have at least 6GB of VRAM to ensure longevity, as 4GB cards have largely been phased out for primary Ethash mining. Popular choices include the NVIDIA RTX 30-series (known for high hash rates) and AMD RX 6000-series (known for energy efficiency).

Motherboard and Power Supply (PSU)

A mixed rig typically demands a motherboard with 6 to 12 PCIe slots. Dedicated mining boards, such as the ASRock H110 Pro BTC+, are designed specifically to handle the resource allocation required for multiple GPUs. Furthermore, because NVIDIA and AMD cards have different power draw profiles, using a high-wattage (1200W+), 80 Plus Gold or Platinum rated PSU is non-negotiable to prevent system crashes and fire hazards.

Software Configuration and Drivers

The primary challenge in how to mine ethereum with amd and nvidia gpu setups is driver conflict. Historically, Windows struggled with multiple display drivers, but modern versions are much more resilient. However, a specific installation order is often recommended to maintain stability.

Driver Management

To avoid "Code 43" errors or system instability, use a tool like Display Driver Uninstaller (DDU) to clean any existing drivers before starting. It is generally advised to install NVIDIA drivers first, followed by the AMD Adrenalin software. For AMD cards, ensure they are set to "Compute Mode" within the Radeon software settings to unlock their full mining potential.

Choosing a Multi-Kernel Miner

Not all mining software is created equal. You need a miner that supports both CUDA (NVIDIA) and OpenCL (AMD) kernels. Leading software options include:
- PhoenixMiner: Known for its low dev-fee and excellent support for mixed rigs.
- LolMiner: Highly regarded for its stability and performance on AMD hardware while maintaining great NVIDIA support.
- Gminer: Offers a user-friendly interface and detailed statistics for each GPU, regardless of the brand.

System Optimization and Windows Tweaks

Before launching your miner, several OS-level adjustments are required to ensure the system doesn't bottleneck your hardware. Without these tweaks, your mixed rig may fail to initialize all cards or crash during high-intensity operations.

Virtual Memory and BIOS Settings

Windows Virtual Memory (Paging File) must be increased to accommodate the total VRAM of all connected GPUs. A safe rule of thumb is to set the paging file size to the sum of all GPU memory plus 4GB. In the motherboard BIOS, you must enable "Above 4G Decoding" and set PCIe speeds to "Gen2" to ensure the CPU can communicate with 6 or more GPUs simultaneously.

Overclocking and Undervolting

Efficiency is the key to profitability. Use MSI Afterburner for NVIDIA cards to lock core clocks and increase memory clocks. For AMD cards, the built-in Radeon Software or MorePowerTool provides deeper control. The table below compares the typical performance of popular mixed-rig components.

NVIDIA RTX 3070	Ampere	~60 MH/s	120W - 130W
AMD RX 6800	RDNA 2	~62 MH/s	115W - 125W
NVIDIA GTX 1660 Super	Turing	~30 MH/s	75W - 85W
AMD RX 580 (8GB)	Polaris	~30 MH/s	90W - 100W

As shown in the data, while AMD cards often offer better hash-to-watt efficiency on certain algorithms, NVIDIA cards generally provide a more "plug-and-play" experience with higher resale value. A mixed rig allows you to balance these benefits.

Connecting to a Mining Pool

Once the hardware is tuned, you must direct your hashing power to a mining pool to receive regular payouts. This involves configuring a batch file (.bat) that identifies your wallet address and the pool's stratum server.

Stratum Protocol and Wallet Setup

A typical configuration string in PhoenixMiner for a mixed rig would look like this:

. It is vital to use a secure wallet that supports the specific coin you are mining. For those who prefer professional management of their assets, Bitget Wallet offers a robust and secure Web3 gateway to manage mined rewards across multiple chains.

Monitoring Mixed Rig Performance

Monitoring software like HiveOS or simple console outputs will show the individual performance of each card. In a mixed rig, watch for "stale shares"—if one brand (e.g., AMD) is producing more errors than the other, it usually indicates an unstable overclock on those specific units.

Current State of the Market (Post-Merge)

The landscape of GPU mining changed forever on September 15, 2022, with the Ethereum Merge. According to data from Etherscan, the network difficulty for the original ETH chain effectively dropped to zero as it moved to PoS. However, the hardware used for how to mine ethereum with amd and nvidia gpu setups transitioned to other projects.

From ETH to ETC and Beyond

Ethereum Classic (ETC) remains the primary destination for Ethash miners. While the profitability is lower than the pre-Merge ETH era, the underlying technology remains identical, making the transition seamless for mixed rigs. Other coins like Ravencoin (RVN) and Ergo (ERG) also utilize GPU mining, though they use different algorithms (KawPow and Autolykos) which may favor one GPU brand over the other.

Profitability and Economic Considerations

As of 2024, mining profitability depends heavily on electricity costs. Many miners have shifted from selling their coins immediately to trading them on high-liquidity platforms. Bitget, a global leader in the cryptocurrency exchange space, supports over 1,300 coins, providing miners with the necessary liquidity to swap their mined ETC or other assets for stablecoins or Bitcoin. With a $300M Protection Fund, Bitget ensures that the proceeds from your mining efforts are handled within a secure and professional ecosystem.

Troubleshooting Common Issues

Mixed rigs are prone to unique errors, such as one driver suite "overtaking" the other. If your NVIDIA cards are detected but your AMD cards are not, check the Windows Device Manager for resource conflicts. Often, disabling the integrated CPU graphics (iGPU) in the BIOS can free up enough PCIe lanes to resolve these detection issues. Additionally, ensure you are using high-quality USB risers, as cheap risers are the leading cause of "GPU Dead" messages in mining software.

While the technical hurdles of how to mine ethereum with amd and nvidia gpu are higher than single-brand rigs, the flexibility it offers is unparalleled. As the market evolves, having a diversified hardware setup ensures you can pivot to the most profitable coin at any moment. For those looking to maximize the value of their mined assets, exploring Bitget’s comprehensive suite of trading tools—including spot and futures markets with competitive fees—is the logical next step in your mining journey.