ORW · Open Rack Wide
Meta's double-wide OCP rack standard (introduced 2025; specification 1.0.0 April 2026) for AI systems whose power and cabling outgrow the 21-inch Open Rack.
Current numbers
~2.9 EF FP4AMD Helios (72× MI455X) rack-scale FP4 (1.4 EF FP8), 31 TB HBM4, ORW double-wide
1.0.1 (effective 2026-05-05)ORW base document
1.0.1 (effective 2026-05-05)ORW Meta design document