TSMC's AI-Driven Surge: Structural Shift or Fleeting Fad?

Philip CarterWednesday, Jul 16, 2025 2:34 am ET
25min read

The semiconductor industry's reliance on artificial intelligence (AI) has never been more pronounced. TSMC's Q2 2025 earnings report underscores a critical inflection point: AI is no longer a niche trend but a $14 billion revenue driver for the company, with High-Performance Computing (HPC) now accounting for 59% of total sales. Yet, investors remain divided—how sustainable is this AI tailwind, and does it justify TSMC's valuation?

The AI Revenue Tsunami: Data and Dominance

TSMC's Q2 results are unequivocal proof of AI's transformative power. HPC revenue surged 29.6% year-over-year, fueled by NVIDIA's H100 GPUs and AMD's MI355X GPUs. The 3nm node, critical for AI's power-hungry chips, now accounts for 22% of sales, up from 9% just one quarter earlier. Advanced nodes (≤7nm) now command 73% of wafer revenue, a 6-percentage-point increase from Q2 2024.

This growth isn't accidental. TSMC's 3nm technology offers 15% better performance and 30% lower power consumption than its 5nm predecessor—a decisive advantage for AI workloads like training large language models. The upcoming 2nm node, slated for tape-out in Q3 2025, promises even greater efficiency, locking in long-term demand from cloud giants and chip designers.

Client Commitments: The Moat Against Competitors

TSMC's 90%+ market share in nodes <10nm isn't just about scale—it's about irreplaceable partnerships. Clients like

and cannot easily shift to rivals like Samsung (with 20–30% lower 3nm yields) or SMIC (sanctioned and technologically lagging). Switching suppliers would delay product launches, a risk these firms cannot afford.

Apple and

, meanwhile, anchor TSMC's smartphone revenue (28% of sales), but it's the AI-driven HPC segment that's the real growth engine. Client lock-in here is structural: advanced nodes are custom-designed for specific chips, creating a high barrier to exit.

Risks Lurking in the Shadows

Despite the positives, two critical risks demand scrutiny. First, margin pressures loom large. The New Taiwan dollar's 7% appreciation against the U.S. dollar this year has already eroded margins—each 1% NT dollar rise reduces margins by 0.4%. Second, geopolitical tensions could disrupt supply chains. TSMC's $165 billion investment in U.S. fabs (including a 3nm plant in Arizona by 2026) mitigates some risks but adds costs.

Is AI a Structural Shift? The Evidence Says Yes

Skeptics argue that AI's demand could be cyclical, akin to past hype cycles. But three factors make this different:
1. Technological Necessity: AI models require ever-larger datasets and faster chips—Moore's Law still applies to advanced nodes.
2. Client Entrenchment: NVIDIA's H100 and AMD's MI355X are purpose-built for TSMC's 3nm process, creating deep technical dependencies.
3. Competitor Gaps: Samsung's struggles with yield rates and SMIC's exclusion from advanced nodes leave

with no peer in critical nodes <5nm.

Investment Thesis: Buy with Caution

At a forward P/E of 16.37x, TSMC trades at a 50% discount to NVIDIA's 72.85x multiple, despite being the backbone of the AI supply chain. This gap suggests investors are pricing in near-term risks (currency, tariffs) but ignoring the long-term structural tailwinds.

Actionable Insight: TSMC is undervalued if AI adoption becomes a permanent feature of the tech landscape. Investors should accumulate positions, but with hedging against NT dollar volatility and geopolitical risks.

Final Verdict

TSMC's Q2 results confirm that AI is not a fad but a paradigm shift in semiconductor demand. The company's lead in advanced nodes and client lock-in positions it to capture decades of growth. While risks exist, the structural case for TSMC's dominance is too strong to ignore. For investors willing to navigate near-term turbulence, this is a generational opportunity.

Invest with discipline, and let the chips fall.

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