發生什麼事
A5X isn't a new product. It was first shown at Google Cloud Next in April, when the plan was for clusters spread across multiple sites to top out at 960,000 Rubin GPUs (NVIDIA blog, April).
Two things are new in this announcement: when general availability arrives, and how far confidential computing has come. G4 VMs, which are equipped with RTX PRO 6000 Blackwell, now offer confidential computing as a generally available option, and NVIDIA sees it as suited to inference and fine-tuning work that must stay private (NVIDIA blog).
01Sources
- Google Cloud and NVIDIA Announce General Availability of NVIDIA Vera Rubin Infrastructure: NVIDIA's official blog, published 2026-10-21 18:45 (Taipei time), part of the GTC Berlin European announcements; A5X GA next month and planned expansion to Europe, WPP demo, A4X Max confidential computing plan, G4 confidential computing GA
- NVIDIA and Google Cloud Collaborate to Advance Agentic and Physical AI: NVIDIA's official blog, 2026-04-22 (Google Cloud Next); background: A5X first announced, multi-site clusters of up to 960,000 Rubin GPUs