CPU Renaissance Powers New Engine for Power Semis, Infineon and Renesas Welcome Volume-Price Double Hit
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CPU Renaissance Powers New Engine for Power Semis, Infineon and Renesas Welcome Volume-Price Double Hit
Bernstein points out that with the rise of agentic AI, CPU server power semiconductor demand will explode. Combined with GPU demand, the overall AI data center power market will grow nearly 7-fold within five years. As key beneficiaries, Infineon and Renesas face a shortage of supply over demand, significantly enhancing their pricing power.
- AI Data Center Power Semiconductor TAM expected to grow from $3.6 billion in 2025 to $24.6 billion in 2030, reaching 45% CAGR.
- CPU Server Power Semiconductors Become Second Growth Engine, TAM Expected to Grow from $1.2 billion in 2025 to $6.0 billion in 2030.
- Power Semiconductor Demand Growth Rate (11%) Far Exceeds Capacity Growth Rate (6%), Supply-Demand Tightness Drives Continued Price Increases.
- Infineon Holds Over 40% Market Share in AI Power Semiconductors, Target Price Raised to €102; Renesas AI Exposure Undervalued, Target Price Raised to ¥6,300.
- Institutions Predict Adjusted EPS CAGR for Infineon Reaches 42% from 2025-2028, Renesas Operating Margin Will Reach 37% by 2028.
Report interpretation
Overview
This research report is published by Bernstein. The core view is that the 'CPU Renaissance' is becoming the second-largest engine for power semiconductor demand, working together with GPUs to drive explosive growth in the AI data center power semiconductor market. The report notes that due to increased power density requirements for AI servers, the power semiconductor market is undergoing structural transformation, where demand growth will significantly exceed supply growth, creating strong pricing upside. Infineon and Renesas Electronics, as key suppliers in this field, have AI business exposure far higher than general market perception. Therefore, institutions have significantly upgraded earnings forecasts, valuation multiples, and target prices for both companies, reaffirming the 'Outperform' rating.
Core views
Demand Side: AI Data Centers Become Core Driver. The report segments the AI data center power semiconductor market into GPU and CPU parts. On the GPU side, driven by increased deployment of AI accelerators and rising cost per watt ($0.13/W to $0.27/W), GPU power semiconductor TAM is expected to grow 8-fold from $2.44 billion in 2025 to $18.55 billion in 2030. More importantly, the report highlighted previously overlooked CPU-side demand: With the rise of Agentic AI, server CPU cores expanded from 70-80 to 200-300, TDP rose from 500W to 1kW, driving CPU server power semiconductor TAM 5-fold from $1.2 billion in 2025 to $6.0 billion in 2030. Together, total AI data center power semiconductor TAM will surge from $3.6 billion in 2025 to $24.6 billion in 2030, with an annual CAGR of up to 45%. Supply and Pricing: Supply-Demand Imbalance Drives Price Rise Cycle. Over the past decade, the power semiconductor market CAGR was only 6%, but is expected to accelerate to 11% over the next five years. However, SEMI predicts 2025-2027 power semiconductor capacity CAGR is only 6%, demand growth clearly faster than supply. This tight supply-demand situation has translated into pricing power; since early 2025, analog chip manufacturers including Infineon, TI, NXP have announced a second round of price hikes. Historical data shows power discrete device ASP is highly sensitive to supply-demand imbalance; during the post-pandemic bottleneck period, ASP rose approximately 60%. Currently, affected by surging AI server demand, rising upstream foundry costs, and geopolitical-induced raw material/energy cost increases, power semiconductor prices are in a strong upward channel. Company Analysis: Infineon and Renesas Being Re-evaluated. Infineon is the biggest beneficiary; it holds over 40% market share in AI power semiconductors and has the largest internal capacity globally (expected over 1 million wafers/month by 2027). Its Dresden Smart Power Fab commenced production ahead of schedule, further consolidating its leading position on the full material platform of Si, SiC, and GaN. Institutions upgraded Infineon 2025-2028 adjusted EPS CAGR to 42%, Target P/E from 25x to 30x, Target Price from €74 to €102. Renesas Electronics also benefits; its AI exposure is undervalued by the market: including CPU server business, Renesas AI revenue share will reach 15% in 2026 (higher than 7% looking only at GPUs), and 27% in 2028. Although its asset-light model results in less margin expansion than Infineon, institutions still upgraded its target P/E from 15x to 20x, and significantly raised target price from ¥4,200 to ¥6,300.
Analysis framework
The report adopted a typical combined method of top-down industry size estimation (TAM Analysis) and bottom-up company fundamental verification. First, by breaking down AI server power consumption structure (GPU vs CPU), combined with micro parameters such as core count, TDP, and power semiconductor content per watt, the report reconstructed the market size model for AI data center power semiconductors, thereby discovering the huge incremental demand on the CPU side ignored by the market. Second, applied supply-demand framework to analyze industry prosperity, comparing the scissors difference between demand growth rate (11%) and capacity growth rate (6%) to derive the upward price trend. Finally, by quantifying the specific business exposure of the two companies (AI Revenue Exposure), corrected the market's cognitive bias regarding their 'AI purity', and subsequently adjusted valuation multiples and target prices.
Methodology notes
Supply-Demand Gap Analysis
The report determines that the market is in a state of insufficient supply and high demand by comparing the difference between power semiconductor demand growth rate (11%) and industry capacity growth rate (6%), thereby deriving conclusions on price increases and industry prosperity. This is a core method in cyclical industry analysis for identifying inflection points and price trends.
TAM Volume-Price Breakdown Model
When calculating the AI data center power semiconductor market size, the report not only focused on the growth in server count (volume) but also deeply analyzed the logic behind the increase in power semiconductor cost per watt (price) (such as 800V architecture, GaN/SiC penetration, VRM structure changes), thereby more precisely capturing market increments.
P/E Multiple Re-evaluation Based on Growth
Due to optimism about the two companies' higher exposure to AI and stronger pricing power, the report upgraded the target P/E Multiple for Infineon and Renesas respectively from 25x/15x to 30x/20x, reflecting the valuation premium logic under high growth expectations.
Asset mapping & comparison
Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).
- Infineon Technologies AG (IFX.DE)Core Beneficiary, Possesses >40% Market Share in AI Power Semiconductors and Largest Internal Capacity
- Strengths
- Tech Leader (Full Platform Si/SiC/GaN), Strong Vertical Integration, Dresden New Plant Commences Ahead of Schedule
- Weaknesses
- Facing Pressure from Chinese Competitors in Low-end IGBT Market
- Comparison
- Stronger Pricing Power and Capacity Guarantee Compared to Peers, Greater Potential for Margin Expansion
- Risks
- Geopolitical Risk, High-end Tech Iteration Below Expectations
- Renesas Electronics Corp (6723.JP)Undervalued AI Beneficiary, CPU Server Power Business Makes Significant Contribution
- Strengths
- Strong Layout in CPU Server Power Area, Asset-Light Model Flexible
- Weaknesses
- Asset-Light Model Results in Less Margin Expansion Than Vertically Integrated Manufacturers
- Comparison
- AI Revenue Share Growth Faster Than Market Expectations, Large Valuation Repair Space
- Risks
- Outsourced Manufacturing Supply Chain Volatility, Intensifying Market Competition
Key data
- AI Data Center Power Semiconductor TAM (2030E)$24.6 billionGrowth from $3.6 billion in 2025, CAGR 45%
- GPU Power Semiconductor TAM (2030E)$18.55 billionGrowth nearly 8-fold from $2.44 billion in 2025
- CPU Power Semiconductor TAM (2030E)$6.0 billionGrowth 5-fold from $1.2 billion in 2025
- Power Semiconductor Market Growth Rate (2025-30E)11% CAGRSignificantly higher than the 6% CAGR of the past decade
- Power Semiconductor Capacity Growth Rate (2025-27E)6% CAGRLower than demand growth rate, causing supply-demand tension
- Infineon AI Power Semiconductor Market Share>40%Market leadership position solid
- Infineon Target Price Adjustment€102Raised from €74, implied ~24% upside
- Renesas Target Price Adjustment¥6,300Raised from ¥4,200, implied ~33% upside
Impact & implications
The report believes there is significant underestimation by the market regarding Infineon and Renesas' AI business exposure, especially ignoring the explosion of CPU server power demand. As AI data center construction shifts from simple GPU stacking to more complex CPU-GPU collaboration, these two European and Japanese giants will gain growth momentum more lasting than expected. Pricing power gains from supply-demand tightness will directly improve gross margins, enabling these two companies to possess stronger earnings elasticity in the upcoming semiconductor uptrend cycle. For investors, this means re-evaluating the growth attributes of these traditional power semiconductor manufacturers in the AI era.
Risks
- AI Data Center Construction Progress Below Expectations
- Upstream Raw Materials and Energy Costs Continue to Rise Sharply
- Chinese Competitors Erode Market Share in Low-end Power Device Markets
- Macroeconomic Downturn Leads to Weak Recovery in Automotive and Industrial Demand
What to watch
- Infineon Dresden Smart Power Fab Capacity Ramp-Up Progress
- Subsequent Increase in Average Selling Price (ASP) of Power Semiconductors
- Evolution Trend of CPU and GPU Power Configuration in AI Servers
- Renesas Electronics Achievement of Operating Margin Goal Towards 37%