Mining graphics card

The most critical metric is the Hash Rate (e.g., MH/s or GH/s) relative to Power Consumption (Watts). You should prioritize cards with a high Efficiency Ratio (Hashrate per Watt). Additionally, ensure the cards have sufficient VRAM (Video RAM)—typically 8GB or higher is required for modern algorithms like Ethash or Autolykos2 to accommodate growing DAG file sizes. Look for models with enhanced cooling systems, such as triple-fan setups or industrial-grade heat sinks, as mining involves 24/7 continuous operation.

Request the supplier to provide GPU-Z screenshots and stress test reports (such as FurMark or 3DMark) for random samples. For bulk orders, verify the Serial Numbers (S/N) with the original manufacturer (e.g., NVIDIA, AMD, or authorized partners like ASUS, MSI). If purchasing 'Refurbished' or 'Used' cards, specifically ask for the re-pasting history and whether the thermal pads have been replaced with high-conductivity versions to ensure longevity.

Ensure the products carry CE, FCC, and RoHS certifications to clear customs in major markets like the EU and USA. Since mining cards are high-power electronics, verify that the power connectors (6-pin/8-pin) meet UL standards to prevent fire hazards. For large-scale deployments, ensure the supplier provides MSDS (Material Safety Data Sheet) if the shipment includes integrated batteries or specialized cooling fluids.

CMP cards often have a lower initial purchase price and lack video outputs, making them more streamlined for server racks. However, Gaming GPUs (like the RTX or RX series) retain a much higher resale value (ROI) in the secondary market for gamers and AI researchers. B2B buyers should calculate the Total Cost of Ownership (TCO), factoring in that Gaming GPUs offer a 'plan B' exit strategy if mining profitability drops.

Always use Secure Payment terms and consider hiring a third-party inspection service (like V-Trust or QIMA) to perform a pre-shipment inspection at the supplier's warehouse. On Made-in-China.com, prioritize Audited Suppliers who have undergone on-site verification. Avoid deals that seem 'too good to be true' or suppliers who insist on non-traceable payment methods like direct crypto transfers for the full amount.

Mining cards are sensitive to Static Electricity (ESD) and physical shock. Insist on Anti-static bagging for each unit and double-walled corrugated boxes with foam inserts. For large volumes, Palletization with shrink-wrap is mandatory to prevent moisture damage and theft. Ensure the Incoterms are clearly defined; CIF (Cost, Insurance, and Freight) is recommended for high-value electronics to ensure the cargo is insured against transit damage.

Check the specific HS Code (typically under 8471.80 or 8542.31) for your target country, as some regions impose high tariffs or 'Anti-Dumping' duties on Chinese electronics. Be aware of export restrictions on high-performance computing chips. Ensure all Commercial Invoices accurately reflect the transaction value to avoid customs seizures or heavy fines for under-declaration.

Negotiate based on Volume Tiers and Warranty Terms. While a 12-month warranty is standard for new cards, mining-specific warranties are often shorter (e.g., 90 days). Negotiate for a 1-2% buffer of spare parts (like replacement fans and capacitors) to be included in the shipment. This reduces your downtime significantly compared to shipping individual faulty units back to China for repair.