Nvidia Mandates Liquid Cooling for Rubin AI Platform, Signaling Industry Shift
Nvidia's new liquid cooling requirement for its Rubin AI platform marks a significant energy efficiency breakthrough and mandates a transition for data center operators.
The story
Nvidia has detailed its 45°C all-liquid cooling technology for its upcoming Rubin AI computing platform, a move the company calls one of the most significant energy-efficiency breakthroughs in data center history. The Rubin platform, set to enter mass production and begin shipments this autumn, will rely entirely on liquid cooling for every chip and network component, eliminating the need for air cooling.
Nvidia has stated that all cloud service providers and data center operators building systems for the Rubin platform must complete their transition to this liquid-cooling technology. This mandate underscores a pivotal shift in AI infrastructure, as the bottleneck in computing power expansion increasingly moves from chip supply to power and thermal management. The high-temperature cooling fluid used by Nvidia's technology, reaching up to 45°C, contributes to greater energy efficiency, setting a new standard for the industry.
Who moved
Apple
What Changed: John Ternus will take over as CEO from Tim Cook on September 1, reportedly planning to re-emphasize bold hardware design.
Why It Matters: This leadership transition signals a potential strategic pivot towards design-centric product development, reminiscent of the company's earlier era.
Amazon
What Changed: AWS grew 28% in Q1 2026, its fastest pace in 15 quarters, while Amazon's custom chips business reached a $20 billion run rate.
Why It Matters: Strong AWS and custom chip performance highlights Amazon's continued dominance and investment returns in cloud and AI infrastructure.
Nvidia
What Changed: Unveiled Halos for Robotics, an expanded safety system to support autonomous robots in industrial environments.
Why It Matters: This move strengthens Nvidia's push into physical AI and robotics, providing a unified safety architecture critical for scaling autonomous systems.
Microsoft
What Changed: Announced seven new MAI models at Build 2026, including MAI-Thinking-1 and MAI-Code-1-Flash, alongside new Azure Cobalt 200 VMs.
Why It Matters: These releases enhance Microsoft's AI ecosystem, offering enterprises more powerful models and optimized infrastructure for agentic AI workloads.
Products & launches
Foldable iPhone Ultra
Company: Apple
What: Rumored to feature a 7.7-inch inner display and 5.3-inch outer display, with iOS 27 optimized for side-by-side multitasking, expected by late 2027.
MacBook Ultra
Company: Apple
What: A major MacBook Pro redesign expected in late 2026 or early 2027, featuring M6 Pro/Max chips, an OLED display, and a touch screen with a touch-friendly macOS 27 interface.
MAI Models (e.g., MAI-Thinking-1, MAI-Code-1-Flash)
Company: Microsoft
What: Seven new AI models built from scratch, with MAI-Thinking-1 benchmarking at parity with Claude Sonnet 4.6 on software engineering tasks, and MAI-Code-1-Flash integrated into GitHub Copilot.
Azure Cobalt 200 VMs
Company: Microsoft
What: New Arm-based Virtual Machines optimized for agentic AI workloads, delivering a 50% performance improvement, announced at Build 2026.
Platforms & policy
Google Search
Development: An unconfirmed Google search ranking update rolled out on Friday, June 19, continuing through Saturday, impacting various sites.
Google Ads
Development: Google Ads has separated Target CPA and Target ROAS as standalone bidding strategy options, disentangling them from 'Maximize conversions' and 'Maximize conversion value'.
Nvidia
Development: Nvidia disclosed that 35 AI high-performance computing supercomputers are currently in development across Europe, marking the region's largest one-year expansion of supercomputers.
Money & markets
Amazon. Q1 2026 operating cash flow was $26.0 billion against $44.2 billion in capex, with long-term debt climbing to $119.1 billion, indicating significant investment in infrastructure.
Amazon. Amazon's $200 billion 2026 capital expenditure plan is projected to significantly impact free cash flow, which fell 66% to $11 billion in full year 2025.
Amazon. Q1 2026 EPS of $2.78 significantly beat the $1.73 consensus, though net income was inflated by a one-time $16.80 billion Anthropic gain.
What we'll be watching
- Amazon Prime Day 2026 continues through June 26, with new deals dropping frequently.
- Nvidia will hold its 2026 annual meeting of stockholders online on June 24, focusing on Blackwell and Vera chip production ramp-ups and capital return plans.
Reporting + analyst voices: grounded via Google Search at publish time.