Nvidia Opens Vera Rubin Rack Blueprints Via MGX 1.2 at OCP

Nvidia used the Open Compute Project Global Summit in San Jose on October 12 to push its Vera Rubin rack blueprints into the open stack, contributing the rack and compute-tray designs to OCP through an updated MGX 1.2 specification that supports deployments up to 250kW and adds "rack-scale blind-mate liquid cooling, interoperable rack-scale interconnect infrastructure and a liquid-cooled 5,000A busbar designed for higher-power AI systems."

Alongside the rack, Nvidia and its partners published an Open Data Center Specification v0.7, framed as "a unified blueprint for next-generation AI factory facility design." A separate OCP Grid Resilience Specification sets how AI infrastructure should behave during utility disturbances, with the goal of "restoring to near-full load within less than two seconds."

Meta committed to the networking side of the stack. The company is "adopting NVIDIA Spectrum-6 102.4Tb/s Ethernet switches to build larger, higher-performance NVIDIA Vera Rubin AI factories on open networking," with Nvidia saying the Spectrum-X Multiplane technology layered on top is sized for "agentic AI factories of more than 100,000 GPUs." Meta is also introducing an N-IceCube switch that runs its FBOSS software.

With Cisco, Nvidia unveiled a pluggable form factor called USFP that the companies say "will provide a path to 400Gb/s-per-lane networking" at four times the bandwidth density of current optics. Google is adding Falcon Transport support to future ConnectX-10 SuperNICs, and Visionbay's K-1 platform contributes an 800 VDC architecture.

Nvidia also open-sourced four DSX software components covering switch configuration, cluster readiness, rack management, and bare-metal provisioning; the Config Manager, per Nvidia, "automates switch configurations at scale, allowing customers to deploy, validate and maintain consistent AI factory network fabrics with minimal to zero manual intervention." The announcement lands into a crowded OCP week on our AI infrastructure tracker, where AMD's Helion open rack with 32,768 EPYC cores was staked out at the same summit.