KAS mining hardware requirements

KAS mining requires high-VRAM GPUs like the RTX 4090 or RX 7900 XTX, as the kHeavyHash algorithm demands strong memory bandwidth and efficiency for optimal performance.

Jul 23, 2025 at 09:56 am

Understanding KAS Mining and Its Computational Demands

KAS (Kaspa) is a next-generation blockchain platform that leverages a unique blockDAG (Directed Acyclic Graph) structure instead of the traditional linear blockchain. This design allows for faster block generation and improved scalability. However, due to its high block production rate—up to 1 block per second—mining KAS requires specialized hardware to remain competitive. Unlike older cryptocurrencies such as Bitcoin, which can still be mined with ASICs designed years ago, KAS mining is optimized for GPU-based systems due to its use of the kHeavyHash algorithm. This algorithm is memory-hard and resistant to ASIC dominance, promoting decentralization.

The computational demands of KAS mining stem from the need to perform hash calculations at high throughput while managing memory bandwidth efficiently. Miners must process blocks rapidly and submit valid shares to pools without delay. Latency and memory bandwidth are more critical than raw clock speed. Therefore, selecting hardware with high VRAM bandwidth and sufficient memory capacity becomes essential.

GPU Requirements for Optimal KAS Mining Performance

The choice of GPU is the most crucial factor in KAS mining efficiency. While multiple GPUs can be used, not all models perform equally. High-performing GPUs for KAS include the NVIDIA RTX 3090, RTX 4090, RTX 3080, and AMD RX 7900 XTX. These models offer a balance of VRAM size, memory bandwidth, and power efficiency.

• VRAM of at least 10GB is recommended to handle the kHeavyHash algorithm efficiently.
• Memory bandwidth exceeding 600 GB/s ensures faster hash processing.
• Compute capability 8.6 or higher (for NVIDIA) provides better optimization with mining software.
• Multi-GPU support is available in mining software, allowing scalability.

Miners should avoid older GPUs with less than 8GB VRAM, such as the GTX 10-series, as they struggle with memory allocation and produce significantly lower hashrates. The kHeavyHash algorithm is designed to stress memory subsystems, making VRAM performance a bottleneck on lower-tier cards.

Power Supply and System Stability Considerations

Mining KAS is power-intensive, especially when running multiple high-end GPUs. A reliable power supply unit (PSU) is vital to prevent system crashes and hardware damage. For a single RTX 4090, a minimum of 850W is required. For multi-GPU rigs (e.g., 6-GPU setup), a 1600W to 2000W 80+ Gold or Platinum certified PSU is strongly advised.

• Ensure the PSU has adequate PCIe power connectors (typically 6+2 pin or 12VHPWR).
• Use modular PSUs for better cable management and airflow.
• Install individual power limit settings via mining software to stay within PSU capacity.
• Consider redundant PSUs in large-scale operations for failover protection.

Unstable power delivery leads to hashrate drops, system reboots, or GPU degradation. Voltage fluctuations can also reduce the lifespan of components. Using a dedicated circuit with stable voltage input is recommended, especially in regions with inconsistent power grids.

Building a Mining Rig: Motherboard and CPU Configuration

While the GPU handles the majority of mining work, the supporting components must not be overlooked. The motherboard must support multiple GPUs via PCIe slots. Mining-specific motherboards like the ASUS B250 Mining Expert or MSI B250M offer up to 19 PCIe slots, enabling large-scale GPU arrays.

• Use PCIe riser cables (USB 3.0 type) to connect GPUs to the motherboard.
• Ensure the motherboard supports legacy BIOS mode for better compatibility.
• Choose a low-power CPU such as the Intel Celeron G3900 or Pentium G4400, as the CPU is only used for initialization.
• Allocate at least 8GB of DDR4 RAM; 16GB is preferable for system stability.

The CPU does not contribute to hashrate but must reliably manage PCIe communication. Overclocking the CPU provides no benefit. Ensure BIOS settings disable unnecessary features like integrated graphics, SATA power management, and fan speed control to reduce interference.

Cooling, Ventilation, and Environmental Setup

KAS mining generates substantial heat, especially in multi-GPU configurations. Inadequate cooling leads to thermal throttling, reducing hashrate and increasing wear. Proper airflow is critical.

• Use open-air mining frames instead of enclosed cases for maximum ventilation.
• Install high-CFM axial fans to exhaust hot air.
• Maintain ambient temperature below 28°C for optimal performance.
• Position rigs in well-ventilated, dust-free areas away from direct sunlight.

Overclocking GPUs increases heat output. If applied, ensure voltage and fan curves are tuned to maintain temperatures below 75°C under load. Excessive heat degrades VRAM and reduces lifespan. Use mining OS dashboards to monitor GPU temperatures in real time.

Software Setup and Mining Configuration Steps

To begin mining KAS, proper software configuration is required. Most miners use GMiner, T-Rex Miner, or NBMiner, all of which support kHeavyHash.

• Download the preferred miner (e.g., GMiner v2.85+) from the official site.
• Extract the zip file to a dedicated folder (e.g., C:\KAS_Miner).
• Open start.bat or create a new one with the following command:

  miner.exe --algo kheavyhash --server kaspapool.com:4444 --user YOUR_KAS_WALLET_ADDRESS --pass x

• Replace kaspapool.com:4444 with your chosen mining pool and YOUR_KAS_WALLET_ADDRESS with your actual KAS wallet.
• Run the script and verify connection and hashrate in the console.

Ensure Windows Defender or antivirus software does not block the miner. Add the folder to exclusions. For Linux users, use HiveOS or RaveOS, which offer web-based control, automatic overclocking profiles, and remote monitoring.

Frequently Asked Questions

Can I mine KAS with a laptop GPU?

Mining KAS on a laptop GPU is not recommended. Most laptop GPUs have limited VRAM (often under 8GB), poor thermal design, and lack PCIe riser support. The sustained load can cause overheating and permanent hardware damage. Desktop GPUs are required for stable mining.

Does KAS mining damage my GPU?

Continuous mining increases wear on components, particularly VRAM and power regulators. However, with proper cooling, undervolting, and temperature monitoring, modern GPUs can operate safely for extended periods. Avoid pushing voltage beyond safe limits.

Is it necessary to use a mining pool for KAS?

Yes. Due to the high difficulty and fast block time, solo mining is impractical. Joining a reputable KAS mining pool like KaspaPool, Flypool, or 2Miners increases the frequency of reward payouts. Pools distribute rewards based on submitted shares.

How do I check my mining hashrate and earnings?

Most mining software displays real-time hashrate in the console. For earnings, log into your mining pool dashboard using your wallet address. The dashboard shows accepted shares, estimated daily KAS earnings, and payout history. Ensure your wallet address is correctly entered to avoid lost rewards.