In early August 2026, global semiconductor foundry leader TSMC once again captured market attention. According to the latest industry supply chain reports, TSMC's 3nm (N3 series) process capacity utilization has remained fully loaded for three consecutive quarters, with customer orders extending into 2027. Behind this phenomenon is the sustained surge in demand for AI chips, high-performance computing (HPC), and flagship smartphone processors, marking the semiconductor industry's formal entry into a new cycle driven by advanced process technology.
3nm Capacity Fully Loaded: The "Hard Demand" for AI Chips
Since mass production began in late 2022, TSMC's 3nm process yield has steadily improved, with the N3E (enhanced version) yield now exceeding 90%. The Q2 2026 financial report showed that the 3nm process contributed approximately 28% of TSMC's total revenue, making it its most profitable technology node. Key customers include NVIDIA, AMD, Apple, and Qualcomm. NVIDIA's Blackwell B200 and next-generation Rubin architecture AI accelerators both use the N3E process, while Apple's A19/M5 series chips have fully transitioned to 3nm.
Industry analysts note that AI chips' extreme pursuit of transistor density and energy efficiency makes 3nm the most cost-effective node currently. Compared to 5nm, 3nm delivers a 15%-20% performance boost while reducing power consumption by over 30%, which is critical for data centers and edge AI devices. TSMC CEO C.C. Wei stated at a recent earnings call: "AI-related demand is far exceeding expectations. We are accelerating 3nm capacity expansion, expecting monthly output to reach 150,000 wafers by the end of 2027."
Capital Expenditure Race: A Golden Era for Equipment Makers
TSMC's continuous 3nm expansion directly fuels an explosion in the semiconductor equipment market. According to the latest data from SEMI, global semiconductor equipment sales are projected to exceed $130 billion in 2026, with advanced process equipment (EUV lithography, etching, thin-film deposition) accounting for over 60%. Orders for ASML's High-NA EUV lithography machines surged 45% year-on-year in H1 2026, with unit prices exceeding €400 million, primarily driven by TSMC, Samsung, and Intel.
Notably, TSMC has adopted a "high capex, high depreciation" strategy for its 3nm expansion, with 2026 capex expected to reach $38 billion, about 70% allocated to advanced process equipment procurement. This trend significantly impacts the supply chain: orders for Tokyo Electron's etching equipment and Applied Materials' deposition equipment hit record highs. Meanwhile, Chinese semiconductor equipment makers are accelerating catch-up, with AMEC and NAURA achieving partial domestic substitution in 3nm etching and thin-film processes.
Supply Chain Restructuring: Can Vietnam Get a Piece of the Pie?
The centralized layout of TSMC's 3nm capacity also triggers reflections on global semiconductor supply chain restructuring. Currently, TSMC's 3nm capacity is mainly located in the Southern Taiwan Science Park (Tainan Fab 18), but geopolitical risks are accelerating TSMC's overseas expansion—the Arizona Fab 21 has introduced 4nm, while the Kumamoto plant in Japan focuses on 12-28nm mature nodes. For emerging semiconductor hubs like Vietnam, the equipment upgrades and material demands driven by 3nm expansion may create new supporting investment opportunities.
Vietnam's recently launched semiconductor strategy explicitly aims to attract packaging, testing, and material supply chain enterprises. Advanced packaging for 3nm chips (such as TSMC's InFO_SoIS and CoWoS-L technologies) requires high automation and precision materials, areas where Vietnam can position itself. Data from Vietnam's Ministry of Planning and Investment shows that semiconductor FDI disbursement reached $1.85 billion in H1 2026, up 32% year-on-year, with Samsung and Hana Micron announcing plans to build advanced packaging plants in Bac Ninh Province, expected to start production by 2027.
However, in the short term, local Vietnamese enterprises still find it difficult to directly participate in core 3nm manufacturing. A Vietnam Semiconductor Association (VSA) expert noted: "Vietnam should prioritize developing IC design and packaging/testing talent, gradually penetrating the upstream supply chain by becoming a backend service base for giants like TSMC." This aligns with the government's "2030 semiconductor self-reliance" goal—starting with packaging and testing, then gradually moving into front-end manufacturing.
Investment Insights: Advanced Process Remains the Core Track
For investors, TSMC's fully loaded 3nm capacity sends a clear signal: the scarcity of advanced process technology is boosting its pricing power. In Q2 2026, the average selling price (ASP) of TSMC's 3nm wafers was approximately $20,000 per unit, about 40% higher than 5nm, with customers still actively bidding for capacity. This "seller's market" is expected to persist until 2028, when the 2nm (N2) process gradually takes over.
Direct beneficiaries include:
- TSMC: As the absolute leader in 3nm, its stock price rose 38% cumulatively in 2026, with a P/E ratio of about 28x, still offering growth potential.
- ASML: The exclusive supplier of High-NA EUV lithography machines, with order visibility extending to 2029.
- Advanced packaging equipment makers: Such as Japan's Disco (dicing saws) and the US's KLA (inspection equipment), benefiting from the increased complexity of 3nm chip backend processes.
- Vietnam Semiconductor ETFs: Such as the VanEck Vietnam Semiconductor ETF (ticker: VNSEMI), which gained 22% in 2026, with major holdings including Samsung Vietnam and Hana Micron.
Meanwhile, investors should be wary of risks: US technology controls on China could further escalate, restricting Chinese AI chip companies' access to 3nm capacity; additionally, if TSMC's 2nm mass production is brought forward to 2028, it could accelerate 3nm depreciation and impact profitability. Overall, however, AI-driven demand for advanced processes still has at least a 3-5 year high-growth cycle, making it one of the most certain logics in current semiconductor investment.
Conclusion
TSMC's 3nm capacity being fully booked through 2027 epitomizes the global semiconductor industry's shift from "chip shortage" to "compute hunger." In this cycle, advanced process is not only the technological high ground but also the anchor of investment value. For emerging markets like Vietnam, while they cannot replicate TSMC's manufacturing miracle in the short term, they can still secure a share of the AI chip wave by focusing on packaging, materials, and talent training. Investors should focus on companies in the supply chain with technological moats and capacity expansion capabilities to capture the long-term dividends of this chip industry bellwether.
