PCIe Market

How big is the PCIe Market in 2026?

The global PCIe market is estimated at USD 43.1 billion in 2026, compared with USD 37.2 billion in 2025, and is forecast to reach USD 185.3 billion by 2036, expanding at a CAGR of 15.7% from 2026 to 2036.

Demand for PCIe is driven by data movement inside AI and cloud servers, where storage, accelerators and network cards share the same connection, and is expanding to compact industrial and telecommunication equipment. Specification releases and Gen 6 device validation are supporting this demand, and the market is expected to grow at a double-digit rate through 2036. For instance, in January 2025 Microsoft said it was on track to invest about USD 80 billion in AI-enabled data centers during fiscal 2025, with more than half in the United States. Likewise, on 11 June 2025 PCI-SIG released the PCIe 7.0 specification to members at 128.0 GT/s, twice the rate of PCIe 6.x, and its Integrators List records Gen 6 devices at 64.0 GT/s. Investment programmes show where servers are being installed and a specification release gives developers a target, but neither shows how many PCIe components are bought in a year.

Storage is a second driver. On 4 August 2026, Microchip and Micron demonstrated a storage architecture that links host processors through a Switchtec Gen 6 switch to multiple Micron 9650 SSDs, and the drives operated at Gen 6 speed. This means operators can avoid paying for storage performance that a slower connection cannot deliver by upgrading the switch and the drives together. According to FMI analysis, suppliers that can demonstrate such a combination have a stronger case in server upgrades. The demonstration comes from the two suppliers themselves, so it does not show the result for every host, software stack or enclosure.

Market Size & Forecast

Table 1: PCIe Market Size and Forecast (USD billion and CAGR percentage), 2025 to 2036

Market size and forecast	Value
2025 Value	USD 37.2 billion
Estimated market size in 2026	USD 43.1 billion
Projected market size by 2036	USD 185.3 billion
CAGR (2026-2036)	15.7%
Added revenue, 2026 to 2036	USD 142.2 billion

Key Market Trends & Insights

• PCIe 4.0 is estimated to account for 42.6% of revenue by generation in 2026, because an established interface stays useful through several product revisions and a tested storage path is costly to change.
• Data centers are expected to hold 38.7% of revenue by end user in 2026, so server and storage builds set the largest block of demand.
• PCIe 7.0 gives developers a target of 128.0 GT/s, but revenue follows only when compatible devices reach working platforms.
• Gen 6 compliance is device-specific. The Integrators List records the tested configurations, so a buyer has to match the listed device to its own board.
• Channel and heat limits decide upgrades. Traces, connectors and cooling restrict how fast a link can run in a compact chassis, so a higher rate adds design and validation cost as well as component price.
• Switch and SSD pairings are becoming the unit of evidence in storage upgrades, as the August 2026 Microchip and Micron demonstration shows.

Regional Highlights

• China is likely to grow at a 17.2% CAGR during the forecast period, followed by Taiwan at 16.8%, the United States at 16.4%, Germany at 13.5% and Japan at 12.9%.

Analyst Perspective

“PCIe upgrades earn their value when drives, switches and host systems deliver the required throughput together. Customers expanding accelerator and storage systems will favor suppliers that demonstrate reliable concurrent operation and make link faults easier to diagnose.”

- Sudip Saha, Principal Consultant, FMI

How is the PCIe Market segmented?

The PCIe Market is segmented by generation, form factor, storage flash type, application, end user and region.

• By Generation: PCIe 1.0 and 2.0, PCIe 3.0, PCIe 4.0, PCIe 5.0, PCIe 6.x, and PCIe 7.x and later development.
• By Form Factor: Mini PCIe and PCIe, including other implementations.
• By Storage Flash Type: SLC, MLC, TLC, QLC and other flash implementations, within storage products only.
• By Application: Graphic Processors, Network Interface Cards, Storage Devices and Controllers, PCIe Switches, and Servers limited to PCIe attachment.
• By End User: Telecommunication, Industrial, Residential, Data Centers, Automotive and Infrastructure.
• By Region: North America, Latin America, Western Europe, Eastern Europe, East Asia, South Asia and Pacific, and Middle East and Africa.

Why is PCIe 4.0 the Leading Generation in the PCIe Market?

PCIe 4.0 accounts for an estimated 42.6% of PCIe revenue by generation in 2026, equal to about USD 18.37 billion, as per FMI's analysis.

Table 2: Generation Share for the PCIe Market (percentage share of revenue), 2026

Segment	Share (2026)
PCIe 4.0	42.6%
Other segments combined	57.4%

An established interface remains useful through several revisions of a product. A system builder may already hold a tested storage path and an approved expansion card, and keeping that combination limits changes to software, cooling and the physical board, particularly where an application moves modest amounts of data but must run consistently for years.

However, the availability of a faster generation does not remove the value of a working design. PCI-SIG has published the PCIe 7.0 specification and its Integrators List identifies Gen 6 devices, but the endpoint may still limit throughput, and the host and its expansion slots must support the proposed change.

Other generations together hold the remaining 57.4%. Suppliers best placed to retain the PCIe 4.0 demand keep established products available, document revisions and help customers assess whether a faster connection improves the actual task, since the choice follows the cost of changing a platform as well as its data rate.

Why are Data Centers the Leading End User in the PCIe Market?

Data centers hold an estimated 38.7% of PCIe revenue by end user in 2026.

Table 3: End User Share for the PCIe Market (percentage share of revenue), 2026

Segment	Share (2026)
Data Centers	38.7%
Other segments combined	61.3%

A slow input stream can leave expensive processing capacity idle even when the processor and the storage device each meet their specifications, so the connection between them affects the amount of useful computing available in a rack. A storage workload can keep an upstream link busy for long periods, while another task creates short bursts and tighter response requirements.

However, extra storage bandwidth improves system output only if software queues and host resources can use it. The switch and the SSD therefore have to be examined together, and a result for one host does not carry over to every software stack or enclosure.

Suppliers best placed show stable performance when several endpoints operate at once, with usable fault records and a recovery process that keeps other workloads running.

What are the Key Drivers, Restraints and Opportunities in the PCIe Market?

The PCIe market is expected to grow from USD 43.1 billion in 2026 to USD 185.3 billion by 2036, which adds USD 142.2 billion over the forecast period. Demand for faster data movement supports spending, while channel design and validation work can slow upgrades, and more connections per system add revenue, so growth depends on the intensity of each application as well as the number of systems produced.

Driver: accelerator and storage use. An accelerator produces more value when data preparation and transfer keep pace with execution. A task that repeatedly loads new material puts a different demand on PCIe from one that reuses data already held in local memory, and shorter idle periods and smaller transfer queues give a concrete reason to invest in a faster connection over many hours of operation.

Restraint: physical channels and heat. Board traces, connectors and cables form one communication path, and a change in signaling rate may require new routing, clock arrangements and signal-conditioning hardware. A compact chassis may already have committed its cooling to processors, so the price of a faster component captures only part of the cost of using it.

Opportunity: fault diagnosis and recovery. An endpoint can disappear from software because of a connector problem or a thermal condition elsewhere in the channel. Suppliers that help engineers locate the cause, read error records and restore the link reduce disruption during development and service, which gives switching and signal-conditioning products a value that lasts beyond initial installation.

The strongest offers connect an improvement in useful throughput with a system that stays stable under sustained load, and suppliers able to show that are best placed to win a share of the USD 142.2 billion added through 2036.

How do Specifications and Compliance Requirements Influence PCIe Demand?

Specification publication, device compliance and acceptance in a finished system answer different questions. A buyer needs all three to judge a new design, but progress at one stage does not complete the others.

Specifications that define the next generation

PCI-SIG released the PCIe 7.0 specification to members on 11 June 2025, specifying 128.0 GT/s. That gives developers a defined target for future products and physical channels, so the release guides engineering investment while revenue follows when compatible devices are available and used in working platforms.

Compliance evidence for particular devices

The PCI-SIG Integrators List records PCIe 6.x devices at 64.0 GT/s, and the public specifications index listed updated Gen 6 link and transaction test material in July 2026. Purchasers need to identify the listed device, the configuration and the applicable test revision, because the evidence belongs to that combination.

Acceptance in the intended system

The production board introduces its own routing, connectors, firmware and cooling conditions. A successful link between evaluation boards does not show how startup or recovery will behave in that assembly, so acceptance depends on representative workloads and the physical arrangement that will enter service.

These stages favour suppliers that carry evidence from a defined interface through to a repeatable operating result. A published rate helps a buyer plan, while documented behavior in the intended system helps the buyer place an order.

What Technical and Operational Constraints Affect PCIe Supply?

The limits on a PCIe design lie in several parts of the system, and improving one does not remove the others.

The first is the shared connection. A switch can add downstream ports, but the width and capacity of its upstream connection must suit the traffic that arrives from them together. More lanes offer useful flexibility only when the selected arrangement supports the required number and width of connections.

The second is the physical channel. Traces, connectors and cables must carry signals at the chosen rate within permitted error conditions. Retimers can restore signal quality across a demanding path but they need power and space, and clock distribution must provide suitable timing across the attached devices.

The third is heat. A component that works in an open evaluation setup may behave differently in a production enclosure near its operating temperature limit. The placement of a switch or retimer can affect airflow as well as board routing, particularly where processors already use most of the available cooling.

The fourth is software and service. Firmware must enumerate devices predictably, contain faults and recover without destabilizing other workloads, and an intermittent fault needs error records that service teams can use. Hardware revisions, power sequencing and recovery behavior therefore remain relevant after the first successful test.

These constraints reward suppliers that document the complete channel and help customers repeat the result across product variants. A faster device has the strongest case when it removes a measured limit without making the equipment harder to maintain.

Where are the Commercial Opportunities for PCIe Suppliers?

The opportunity lies in storage integration, reusable board designs and equipment that needs dependable service over a long life.

The first is storage and accelerator attachment. Combined demonstrations help expose limits between components before a buyer commits to a platform, and the next step is to reproduce the required throughput and response behavior with the intended host and software.

The second is repeated implementation. Moving a connector or changing board dimensions can change channel behavior, so a supplier that provides reusable design guidance and tools to compare variants reduces late routing, clock and power-sequencing changes. That makes engineering support part of the value of the component.

The third is industrial service. An established generation can meet a control or measurement task throughout a long operating life, and clear revision control, accessible error reporting and documented recovery protect that installed design. Data-intensive inspection creates selective opportunities for faster attachment.

Some buyers will pay to shorten debugging, and others need a lower-power design because cooling limits the number of devices in a chassis. Suppliers can serve both groups by showing what changes in the working system and not by relying on the interface rate alone.

PCIe Market by Country (2026 to 2036)

Table 4: Country Growth Outlook for the PCIe Market (CAGR percentage), 2026 to 2036

Country	CAGR (2026-2036)
China	17.2%
Taiwan	16.8%
United States	16.4%
Germany	13.5%
Japan	12.9%

What is driving PCIe demand in China?

China is likely to grow at a 17.2% CAGR during the forecast period, the highest rate among the countries analysed.

China's Ministry of Industry and Information Technology reported more than 8.8 million standard racks in use at computing centers by September 2024. An installed base of that size is an advantage because it supports replacement and storage-expansion orders. The disadvantage is the density of the systems: several fast storage devices can fill a shared upstream connection even when each works correctly, and the location of switches and retimers also affects cooling in a constrained chassis.

Growth is likely to stay with systems that carry many active endpoints. Suppliers need to show sustained behavior across the intended mix of endpoints, including platforms that retain established generations.

What is supporting PCIe demand in Taiwan?

Taiwan is likely to grow at a 16.8% CAGR during the forecast period.

In May 2025, NVIDIA and Foxconn announced a planned AI supercomputer for Taiwan with 10,000 Blackwell GPUs, to be provided through Foxconn's Big Innovation Company. A local buildout of that kind supports demand for the storage and expansion connections within its servers, which is an advantage for suppliers near the manufacturing base. The disadvantage is the work needed to repeat a validated electrical design across product variants, since a different connector position or board size can change the channel and power sequencing or clock arrangements can add late changes.

Demand is likely to follow suppliers that give device-level evidence and also help customers carry the required operating margin into each product. PCI-SIG Gen 6 entries show device compliance, but the production board remains a separate acceptance task.

What is leading PCIe demand in the United States?

The United States is likely to grow at a 16.4% CAGR during the forecast period.

The Microsoft programme noted earlier places more than half of its data-center investment in the United States, which supports orders for PCIe hardware as server capacity is installed and is an advantage. The disadvantage is that processing capacity only earns its value when the connection keeps pace: a database can be sensitive to variations in response time, while a large transfer puts more weight on sustained bandwidth, and combined storage and accelerator work can expose both conditions.

The market is likely to grow with equipment where better use of processing capacity has value across many operating hours. Representative workload traces help identify which part of the connection needs improvement, and purchasing becomes stronger when integration work is followed by tests using the intended software and service conditions.

How do industrial operating lives shape PCIe demand in Germany?

Germany is likely to grow at a 13.5% CAGR during the forecast period.

Microsoft announced a EUR 3.2 billion (USD 3.68 billion), two-year cloud and AI infrastructure programme in February 2024, including expansion in Frankfurt and planned infrastructure in North Rhine-Westphalia. New server capacity of that kind supports purchases of PCIe components, which is an advantage. The disadvantage lies in industrial equipment that keeps a stable configuration over a long life, where replacing an interface component can require renewed examination of control software and measurement hardware, so the gain in bandwidth has to justify the additional engineering work.

Growth is likely to stay below the other countries analysed. Predictable startup, clear revision control and recovery records support continued demand for established generations, and suppliers can serve this installed base while offering faster attachment where inspection work needs to move larger quantities of data.

How does compact equipment shape PCIe demand in Japan?

Japan is likely to grow at a 12.9% CAGR during the forecast period, the lowest rate among the countries analysed.

AWS announced in January 2024 that it planned to invest in its existing Tokyo and Osaka cloud infrastructure by 2027. Expanding these facilities supports purchases of the PCIe connections used in added computing and storage capacity, which is an advantage. The disadvantage is compact equipment, which limits the space available for longer boards and additional airflow, so a faster interface can meet a transfer requirement with fewer lanes but the complete design still has to satisfy electrical and thermal conditions.

Service access is part of the same decision. A connector that is easy to reach during assembly may be difficult to reach after installation, and suppliers that document power states and recovery behavior help designers assess the connection within its intended enclosure before committing to a product.

Who are the notable companies in the PCIe Market?

Suppliers differ by the part of the connection they provide. Switching, signal restoration and storage control address separate problems, even when their products operate in the same equipment.

Broadcom offers the PEX90000 Gen 6 switch family, and Microchip Technology supplies Switchtec Gen 6 switches. These products serve systems that need to connect and manage several endpoints, and port arrangement, traffic distribution, error containment and recovery affect how well a switch fits the intended storage or compute system.

Astera Labs offers Scorpio P-Series switches for advanced computing interconnect designs, where the arrangement of connections and its management in the host are central. A product comparison therefore needs to follow the intended topology and not group every connectivity device together.

Marvell supplies Alaska P Gen 6 retimers for channels that require signal restoration, and Phison Electronics is active through PCIe SSD controllers, signal-conditioning products and Gen 6 development products. A retimer is assessed against channel margin and power, while a controller must also be assessed through the flash and firmware of the finished storage device.

Suppliers hold customers when they combine the required device function with clear implementation support and usable fault diagnosis. These roles imply no overall company revenue ranking.

Key Developments in the PCIe Market

• On 4 August 2026, Microchip Technology announced a demonstration with Micron Technology combining Switchtec Gen 6 switches and Micron 9650 SSDs for AI and data center infrastructure.
• In July 2026, the PCI-SIG public specifications index listed updated Gen 6 link and transaction test material, which makes the applicable revision part of validation planning.
• During 2026, the PCI-SIG Integrators List recorded Gen 6 devices at 64.0 GT/s, with entries that identify specific tested configurations.
• On 11 June 2025, PCI-SIG released the PCIe 7.0 specification to members, specifying a rate of 128.0 GT/s.
• On 18 May 2025, NVIDIA announced the Foxconn AI Factory in partnership with Taiwan.
• On 3 January 2025, Microsoft set out its plan to invest about USD 80 billion in AI-enabled data centers during fiscal 2025.

Key Players in the PCIe Market

• Broadcom
• Microchip Technology
• Astera Labs
• Marvell
• Phison Electronics

PCIe Market Report Scope

Table 5: Report Scope for the PCIe Market (coverage fields and definitions), 2026 to 2036

Coverage Field	Report Scope
Market Breakdown	Generation (PCIe 1.0 and 2.0, PCIe 3.0, PCIe 4.0, PCIe 5.0, PCIe 6.x, PCIe 7.x and later development); Form Factor (Mini PCIe, PCIe); Storage Flash Type (SLC, MLC, TLC, QLC, Other); Application (Graphic Processors, Network Interface Cards, Storage Devices and Controllers, PCIe Switches, Servers); End User (Telecommunication, Industrial, Residential, Data Centers, Automotive, Infrastructure)
Quantitative Units	Revenue in USD billion and CAGR from 2026 to 2036
Market Definition	PCIe interconnect hardware and PCIe expansion devices, with embedded component value counted once within the finished device. It excludes complete host computers and servers, duplicate upstream component revenue, and unrelated processing and memory revenue.
Regions Covered	North America, Latin America, Western Europe, Eastern Europe, East Asia, South Asia and Pacific, Middle East and Africa
Countries Covered	China, Taiwan, United States, Germany and Japan
Key Companies Covered	Broadcom, Microchip Technology, Astera Labs, Marvell and Phison Electronics
Forecast Period	2026 to 2036 (with 2025 historical baseline)
Approach	Combined primary interviews, secondary literature analysis, and top-down data triangulation

PCIe Market - Research Methodology

The market assessment combines primary interviews with industry participants and secondary research drawn from company disclosures, trade data and industry publications. Market size is built from supply-side and demand-side estimates and validated top-down, and segment shares and competitive positioning are checked through data triangulation before publication.

PCIe Market by Segments

By Generation

• PCIe 1.0 and 2.0
• PCIe 3.0
• PCIe 4.0
• PCIe 5.0
• PCIe 6.x
• PCIe 7.x and later development

By Form Factor

• Mini PCIe
• PCIe, including other implementations

By Storage Flash Type

• SLC
• MLC
• TLC
• QLC
• Other flash implementations

By Application

• Graphic Processors
• Network Interface Cards
• Storage Devices and Controllers
• PCIe Switches
• Servers, limited to PCIe attachment

By End User

• Telecommunication
• Industrial
• Residential
• Data Centers
• Automotive
• Infrastructure

By Region

• North America
  • United States
  • Canada
• Latin America
  • Brazil
  • Mexico
  • Argentina
  • Chile
• Western Europe
  • Germany
  • France
  • United Kingdom
  • Italy
  • Spain
  • Benelux
  • Nordics
• Eastern Europe
  • Poland
  • Czech Republic
  • Romania
  • Hungary
• East Asia
  • China
  • Japan
  • South Korea
• South Asia and Pacific
  • India
  • ASEAN
  • Australia and New Zealand
• Middle East and Africa
  • GCC Countries
  • South Africa
  • Turkiye
  • Israel

Research Sources and Bibliography

• [1] Microsoft. The golden opportunity for American AI. 3 January 2025.
• [2] PCI-SIG. The PCIe 7.0 Specification, Version 1.0 is Now Available to Members. 2025.
• [3] PCI-SIG. Integrators List. 2026.
• [4] Microchip Technology. Microchip Technology, in Collaboration With Micron Technology, Demonstrates High-Performance PCIe Gen 6 Storage Architecture for AI and Data Center Infrastructure. 4 August 2026.
• [5] PCI-SIG. Specifications. 2026.
• [6] Ministry of Industry and Information Technology. Systematically advancing computing-power network capacity. 6 January 2025.
• [7] NVIDIA. Foxconn Builds AI Factory in Partnership With Taiwan and NVIDIA. 18 May 2025.
• [8] Microsoft. Microsoft invests EUR 3.2 billion to expand AI infrastructure and cloud capacity in Germany. 15 February 2024.
• [9] Amazon Web Services. AWS plans to invest 2.26 trillion yen into its Japanese cloud infrastructure by 2027. 19 January 2024.