Google Cloud A5X on NVIDIA Vera Rubin NVL72 to Reach GA in November

NVIDIA said in a blog post that each A5X instance is built on its Vera Rubin NVL72 rack-scale system and that the platform covers training, inference and large-scale reinforcement learning. Google Cloud's version pairs the racks with its fourth-generation liquid-cooling technology, according to the same post.

First A5X Customers and Early Use

London-based Ineffable Intelligence, founded by AlphaGo creator David Silver, was the first customer to use A5X, for reinforcement learning research. WPP, the London marketing group, also tested its creative AI agents on the platform. RTTNews said WPP reported that tasks which normally need several interconnected servers ran on a single A5X instance. That is a customer observation from an initial test, not a benchmark.

Google Cloud also plans to bring rack-scale NVIDIA Confidential Computing to bare-metal instances. RTTNews noted the technology is already generally available on G4 virtual machines powered by NVIDIA Blackwell GPUs.

Liquid Cooling and Power Demands at 960,000 GPUs

A5X is a liquid-cooled, rack-scale product, so every rack added toward the 960,000-GPU target pulls its own cooling and power build-out with it. NVIDIA said the companies are also exploring its DSX MaxLPS capabilities for Vera Rubin infrastructure, aimed at performance per watt and at expanding capacity within available data-center power budgets. As Voltgrid reported, NVIDIA is already pushing the same rack-scale logic in containers with its DSX POD of 504 Rubin GPUs.

What Google Cloud and NVIDIA Have Not Confirmed

Neither company has published instance pricing, per-rack power draw, or the sites and timetable behind the 960,000-GPU target in the sources reviewed. Headlines that call the service already available are premature: the general availability date is November, and only the first customers have access today. Alphabet shares fell roughly 1% and NVIDIA shares rose nearly 2% in pre-market trading after the news, RTTNews said.