MACOM’s PCIe 7.0 Equalizers Become Critical Rail for AI Scale-Up Infrastructure

The growth driver for MACOM is not a cyclical trend but a fundamental paradigm shift. The world is racing to build the physical infrastructure for artificial intelligence, and the scale is exponential. According to market research, the global data center infrastructure market is on track to surpass $1 trillion in annual spending by 2030. This isn't just incremental growth; it's a new economic layer being constructed at unprecedented speed. The catalyst is clear: the world's largest tech companies are investing nearly $200 billion in capital expenditure for data centers in a single year, a figure expected to climb by over 40% next year alone as they rush to secure computational power.

This build-out creates a massive, non-negotiable demand for the underlying components. A key metric is the strain on power. Goldman Sachs Research forecasts that global data center power demand will rise 165% by 2030 from 2023 levels. This isn't just about more servers; it's about a complete re-engineering of electrical architectures, cooling systems, and connectivity to handle terawatt-hours of new energy. The entire value chain is being rewritten to support this AI-scale compute.

In this S-curve, MACOM is positioning itself as a critical infrastructure layer player. Its role is not to build the AI models, but to provide the high-speed, high-reliability interconnects that make those models practical. The company's participation in OFC 2026, the premier optics and communications conference, is a direct signal of this strategic focus. MACOM is showcasing a portfolio of advanced photonics, optoelectronic and copper interconnect solutions supporting AI scale-up and scale-out architectures. The demonstrations-featuring 1.6 Terabit solutions, PCIe 6.0/7.0 capabilities, and next-generation optical modules-are not incremental updates. They are the fundamental rails being laid for the next generation of data center networks. For an investor, this is the definition of riding an exponential curve: providing the essential components for a market that is not just growing, but being born.

Technological Adoption: From PCIe 6.0 to 7.0

MACOM isn't just following the next generation of compute protocols; it's engineering the path to adoption. The company's latest move is a direct play on the exponential scaling of data center interconnects. Earlier this week, MACOM announced the industry's first PCIe 7.0–optimized linear equalizer and cross-point switch devices. These new MAEQ-39964 and MAEQ-39966 chips are designed for 128 GT/s operation, a critical step in supporting the next protocol leap. More importantly, they extend the reach of passive copper cables. This is a fundamental infrastructure upgrade. As signaling speeds double with each new PCIe generation, maintaining signal integrity over copper becomes a major engineering challenge.

The company is demonstrating this roadmap live at OFC 2026. Its booth features a suite of high-speed solutions, but the standout is the 1.6 Terabit Solutions demo. This isn't a theoretical concept; it's a live showcase of a 102.4T switch ecosystem using retimed optics, low-power Active Copper Cables, and Linear Pluggable Optics. This focus on the highest-density, lowest-latency links is a clear signal of MACOM's ambition to capture growth at the leading edge of AI scale-out. The company is positioning itself as a key enabler for the 1.6T and beyond architectures that will define the next phase of data center networking.

The strategic alignment here is tight. The AI infrastructure build-out is forcing a re-evaluation of every layer, from power to cooling to connectivity. MACOM's dual focus on advanced copper interconnects and optics mirrors the industry's own hybrid approach. By providing the critical equalization technology for PCIe 7.0 and showcasing 1.6T capabilities, MACOM is ensuring its products are in the fundamental rails being laid for this new paradigm. This isn't incremental improvement; it's about being a required component in the exponential adoption curve.

Market Context and Competitive Dynamics

MACOM's opportunity sits at the intersection of two powerful, high-growth markets: the specialized world of high-density interconnects for AI and the fundamental industrial demand for copper. The numbers reveal a dual demand driver that extends far beyond data centers. The high-density interconnect market itself is projected to nearly double, growing from $19.5 billion in 2025 to $47.1 billion by 2035. That's a compound annual growth rate of 9.2%, a pace driven by the relentless push for miniaturization and faster signal transmission in everything from 5G networks to advanced consumer electronics. For MACOM, this is the core market for its high-performance, high-density printed circuit boards and interconnect solutions.

But the story doesn't stop there. The broader copper market, which provides the raw material for these interconnects and countless other applications, is on a similar exponential trajectory. It is expected to expand to $184.58 billion by 2030, growing at a 10.4% annual rate. This surge is being pulled by massive, structural shifts: the global build-out of electric vehicle fleets, the installation of renewable energy systems, and the modernization of electrical grids into smart networks. In other words, MACOM's copper-based products are benefiting from a fundamental infrastructure shift that is not cyclical but paradigmatic.

This creates a unique competitive dynamic. MACOM is not just competing in a crowded PCB market; it is positioned within a supply chain that is being rewritten from both ends. On one side, the explosive demand for AI servers is driving the need for the most advanced, high-density interconnects. On the other, the global energy transition is creating a massive, sustained demand for copper itself. This dual pressure ensures that the cost and availability of the base material are less of a pure commodity risk and more of a macroeconomic tailwind. The company's focus on advanced copper interconnects, like those showcased at OFC, allows it to capture value at the high-performance end of this expanding market. It is building the fundamental rails for the next paradigm, where compute power and clean energy infrastructure are inextricably linked.

Catalysts, Risks, and What to Watch

The strategy is clear, but its success now hinges on a few critical milestones. The primary near-term catalyst is the commercial adoption of the next-generation protocols MACOM is engineering. The industry's move to PCIe 7.0 and CXL is the key signal. When major server and GPU OEMs begin designing these new systems and selecting components, it will validate MACOM's first-mover equalizer technology. The company's equalizers are not optional; they are the essential solution to the signal integrity problem at 128 GT/s. Their adoption will directly translate into revenue, turning a technical showcase into a commercial engine.

Yet, the path is not without a fundamental risk. The entire copper interconnect layer MACOM is building is vulnerable to technological disruption. The exponential scaling of data centers is a powerful force, but it also accelerates the search for alternatives. Advanced optical interconnects, which can transmit data over longer distances with less loss, are a constant contender. More radically, new materials or chiplet-based architectures could bypass traditional copper traces altogether. The risk is not that copper will disappear overnight, but that a superior alternative could emerge and capture the high-performance segment before MACOM's solutions are fully entrenched. This is the classic threat to any infrastructure layer: being out-innovated.

For investors, the watchlist is straightforward. The first signal is design wins. Look for announcements where MACOM's equalizers or 1.6T solutions are selected by a major hyperscaler or server OEM for a new platform. These are the tangible proof points that the company's roadmap is being adopted. The second, more subtle metric is MACOM's ability to maintain its first-mover advantage in high-speed equalization. The company has a head start, but the technology is complex and the market is large. If competitors can replicate the performance or offer a compelling alternative, the window for capturing premium value could close quickly. The OFC 2026 demonstrations are a strong start, but the real test is in the boardrooms and design labs of the world's largest tech companies.