InfiniBand vs Ethernet — Market

Verified claims and product-axis read for InfiniBand vs Ethernet. Every fact below is sourced; every product judgment traces back to underlying signals.

Verified facts

• Intel's combined Q2+Q3 2025 revenue is approximately $26.6 billion ($12.9B + $13.7B). ↗ (financial)
• The U.S. government, SoftBank, and NVIDIA collectively committed approximately $15.9 billion in fresh Intel equity in Aug–Sep 2025 ($8.9B + $2B + $5B). ↗ (financial)
• Cornelis Networks' open senior hiring across libfabric, RDMA, SerDes, ASIC RTL and pre-sales spans Feb–May 2026 with no observed gaps. ↗ (other)
• HPE's Slingshot product line is currently at version 11 with 400Gbps line rate as of 2026. ↗ (other)
• At HPE Discover June 2025, HPE introduced new HPE Private Cloud AI and reference architectures under 'NVIDIA AI Computing by HPE'. ↗ (other)
• Meta's previously disclosed 24K H100 cluster uses RoCEv2 over Ethernet rather than InfiniBand. ↗ (other)
• A 'Principal Engineer, AI Fabric Networking Architecture' role covering AI cluster networking and ethernet fabric architecture was posted 2026-04-09. ↗ _(technical_spec)_
• A 'Software Engineer, RDMA Transport and Collective Communication' role was posted 2026-04-09. ↗ (other)
• NVIDIA, Intel and AMD have all participated as strategic investors in Ayar Labs' funding rounds. ↗ (financial)
• A 'Technical Program Manager, AI Network Fabric Buildout' role was posted 2026-05-07. ↗ (other)

Top products (engine read)

Ayar Labs Optical I/O Chiplet / Co-Packaged Optics for Ethernet/InfiniBand — co-packaged optical I/O chiplet

Opportunity: Both InfiniBand and Ethernet roadmaps need optical I/O to break the SerDes copper-reach wall at 800G+. Ayar's protocol-agnostic chiplet (Ethernet/IB) bridges both camps.

Hot potential infrastructure layer — all three accelerator vendors are co-investors. Heavy ASIC + packaging hiring confirms silicon ramp; missing public product_launch/order means opportunity stage.

Cornelis Networks Omni-Path Express CN5000 — HPC interconnect fabric

Opportunity: Revived Omni-Path positioning itself as the only non-NVIDIA, non-Ethernet alternative for sovereign/lab HPC; AI Networking SA hire signals attempt to break out of DOE silo.

Niche third option with strong R&D + GTM hiring momentum but no hyperscaler logo. A 'potential opportunity' bet — credibility hinges on first AI cluster reference outside DOE.

Arista 7800R Ethernet AI Fabric (RoCEv2 for hyperscale GPU clusters) — Ethernet switch fabric

Opportunity: Hyperscalers want an open, vendor-diverse alternative to InfiniBand; Meta's 24K H100 deployment validates RoCEv2-over-Ethernet at scale.

Hot — Arista's hyperscale Ethernet switch is the proven InfiniBand-alternative at Meta-scale and the public/investor narrative for Ethernet is accelerating.

Ultra Ethernet (UEC) Transport / Specification — open consortium spec/fabric standard

Opportunity: 7 of the top demand queries in the sample are direct 'ultra ethernet' lookups — the market is actively trying to learn this standard before buying.

Hottest 'wind direction' signal in topic. Massive question-stage demand + flagship HPE and Meta product alignment. The standard, not a SKU — opportunity for early NIC/switch vendors who certify first.

See the Products and Strategy modules for the full product list and forward-looking judgment.