InfiniBand VS PCI Express
As of 4 November 2026, PCI Express is named by 597 companies and InfiniBand by 304; InfiniBand skews to companies under 200 people (53% vs 47%), PCI Express to companies over 1,000 (29% vs 26%).
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: InfiniBand's script and mail records show on hundreds of thousands of small sites, PCI Express rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- InfiniBand: 2–200 employees
- 53%
- PCI Express: 2–200 employees
- 47%
- InfiniBand: 1,000+ employees
- 26%
- PCI Express: 1,000+ employees
- 29%
- Postings per company, 90 days
- 6.4 · 9.0
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | InfiniBand | share | PCI Express | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 10 | 3% | 18 | 3% | even |
| 2-10 employees | 53 | 17% | 71 | 12% | InfiniBand |
| 11-50 employees | 58 | 19% | 93 | 16% | InfiniBand |
| 51-200 employees | 51 | 17% | 114 | 19% | PCI Express |
| 201-500 employees | 32 | 11% | 82 | 14% | PCI Express |
| 501-1000 employees | 21 | 7% | 48 | 8% | even |
| 1001-5000 employees | 26 | 9% | 62 | 10% | even |
| 5001-10000 employees | 11 | 4% | 28 | 5% | even |
| 10,001+ employees | 42 | 14% | 81 | 14% | even |
| Segment | InfiniBand | share | PCI Express | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 170 | 56% | 203 | 34% | InfiniBand |
| Manufacturing & industry | 47 | 15% | 233 | 39% | PCI Express |
| Public, community & associations | 22 | 7% | 13 | 2% | InfiniBand |
| Business & finance services | 18 | 6% | 81 | 14% | PCI Express |
| Media & content | 13 | 4% | 13 | 2% | InfiniBand |
| Consumer services & leisure | 12 | 4% | 10 | 2% | InfiniBand |
| Utilities & infrastructure | 9 | 3% | 16 | 3% | even |
| Health care | 4 | 1% | 1 | 0% | even |
| Automotive | 3 | 1% | 12 | 2% | even |
| Commerce & trade | 3 | 1% | 8 | 1% | even |
| Agriculture & forestry | 1 | 0% | – | – | outside top 12 |
| Property & construction | 1 | 0% | 1 | 0% | even |
| Transport, logistics & rental | – | – | 6 | 1% | outside top 12 |
| Segment | InfiniBand | share | PCI Express | share | Leans |
|---|---|---|---|---|---|
| United States | 220 | 72% | 427 | 72% | even |
| United Kingdom | 18 | 6% | 28 | 5% | even |
| Germany | 8 | 3% | 17 | 3% | even |
| Singapore | 5 | 2% | 4 | 1% | even |
| Canada | 4 | 1% | 7 | 1% | even |
| France | 4 | 1% | 17 | 3% | even |
| Netherlands | 4 | 1% | – | – | outside top 12 |
| United Arab Emirates | 3 | 1% | – | – | outside top 12 |
| Australia | 3 | 1% | 3 | 1% | even |
| India | 3 | 1% | 18 | 3% | PCI Express |
| Austria | 2 | 1% | – | – | outside top 12 |
| Czechia | 2 | 1% | – | – | outside top 12 |
| Poland | – | – | 7 | 1% | outside top 12 |
| China | – | – | 5 | 1% | outside top 12 |
| Belgium | – | – | 4 | 1% | outside top 12 |
| Spain | – | – | 4 | 1% | outside top 12 |
| Segment | InfiniBand | share | PCI Express | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 571 | 23% | 1,443 | 21% | even |
| IT operations & business systems | 565 | 22% | 193 | 3% | InfiniBand |
| Engineering (non-software) | 318 | 13% | 3,851 | 57% | PCI Express |
| Data & AI | 176 | 7% | 49 | 1% | InfiniBand |
| Sales | 160 | 6% | 152 | 2% | InfiniBand |
| Product, program & project management | 144 | 6% | 91 | 1% | InfiniBand |
| Customer service & success | 31 | 1% | 10 | 0% | even |
| Business development & strategy | 16 | 1% | 17 | 0% | even |
| Marketing & communications | 8 | 0% | 10 | 0% | even |
| Quality, safety & environment | 6 | 0% | 59 | 1% | even |
| Skilled trades and field service | 5 | 0% | 10 | 0% | even |
| General management & consulting | 4 | 0% | 1 | 0% | even |
| Human resources | 3 | 0% | 1 | 0% | even |
| Logistics warehouse and transport | 3 | 0% | 6 | 0% | even |
| Procurement and purchasing | 3 | 0% | 7 | 0% | even |
| Facilities cleaning and security | 1 | 0% | – | – | outside top 12 |
| Finance & accounting | 1 | 0% | 3 | 0% | even |
| Unclassified | 1 | 0% | 12 | 0% | even |
| Design & UX | – | – | 33 | 0% | outside top 12 |
| Research and science | – | – | 7 | 0% | outside top 12 |
| Construction and civil | – | – | 4 | 0% | outside top 12 |
| Arts media and entertainment | – | – | 1 | 0% | outside top 12 |
| Education & training | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using InfiniBand →
Companies using PCI Express →
compute processors ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
PCI Express is named by 597 companies in job postings and InfiniBand by 304; 82 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/infiniband-vs-pcie)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
InfiniBand vs PCI Express: questions
Which is more used, InfiniBand or PCI Express?
By companies naming it in their own job postings, PCI Express (597) over InfiniBand (304). By website-and-DNS footprint, PCI Express (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses InfiniBand?
53% of InfiniBand companies have 2 to 200 employees, against 47% for PCI Express. 26% of InfiniBand companies have over 1,000 employees, against 29% for PCI Express.
Do companies run both?
82 companies name both in their postings, usually InfiniBand in marketing and PCI Express in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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