Chip cost and fab economics define the massive capital investments and complex cost structures that determine semiconductor pricing — where a leading-edge fab costs $20 billion+ to build, a single wafer costs $10,000-$20,000 to process, and a mask set can exceed $15 million, making semiconductors one of the most capital-intensive industries in the world.

What Determines Chip Cost?

• Definition: The total cost per chip is determined by fab construction, wafer processing, mask costs, packaging, testing, and yield — divided across the number of good dies produced.
• Key Formula: Cost per die ≈ (Wafer cost / Good dies per wafer) + Packaging cost + Test cost.
• Scale Dependency: High-volume products (billions of units) achieve extremely low per-unit costs; low-volume ASICs can cost $50-$500+ per chip.

Why Fab Economics Matter

• Barrier to Entry: Only 3 companies (TSMC, Samsung, Intel) can manufacture at leading-edge nodes — the $20B+ fab cost eliminates most competitors.
• Pricing Pressure: Chip customers demand lower prices every year, requiring fabs to continuously improve yield and throughput to maintain margins.
• Design Choices: The cost of masks and process development forces companies to choose between cutting-edge performance (expensive) and mature nodes (cost-effective).
• Geopolitics: Governments invest $50-100B+ (CHIPS Act, EU Chips Act) because domestic semiconductor manufacturing is strategic infrastructure.

Fab Construction Costs

Wafer Processing Costs

• Leading-Edge (3-5nm): $16,000-$20,000 per 300mm wafer — includes 80+ lithography layers, some with EUV ($150M per scanner).
• Mainstream (14-28nm): $3,000-$8,000 per wafer — DUV lithography with multi-patterning.
• Mature (65-180nm): $1,000-$3,000 per wafer — simpler processes, fully depreciated equipment.
• Processing Steps: Leading-edge chips require 1,000+ individual process steps over 2-3 months of fabrication.

Mask Set Costs

• 5nm Node: $15-20 million per mask set (80+ masks, many EUV).
• 7nm Node: $10-15 million (DUV multi-patterning).
• 28nm Node: $1-3 million.
• 180nm Node: $200K-$500K.
• Impact: Mask cost amortized over production volume — 1 million chips amortizes a $15M mask set to $15/chip; 1,000 chips would be $15,000/chip.

Cost Per Die Example

Industry Economics

• Capital Intensity: Semiconductor fabs have the highest capital expenditure per revenue dollar of any manufacturing industry.
• Depreciation: Fab equipment depreciates over 5-7 years — mature fabs with fully depreciated equipment have much lower operating costs.
• Utilization: Fabs must run at 80-95% utilization to be profitable — even brief periods of low demand can cause significant losses.
• R&D Cost: Developing a new process node costs $3-5 billion in R&D over 3-5 years before first revenue.

Chip cost and fab economics are the driving force behind the entire semiconductor industry structure — dictating which companies can compete at leading edge, why foundry models dominate, and why governments invest hundreds of billions to secure domestic chip manufacturing capacity.