AWS makes Trainium3 Ultra Servers generally available

Amazon Web Services (AWS) has made its latest generation Trainium chips – Trainium3 – available via its UltraServers offering.

UltraServers were launched by AWS in December 2024. Comprised of four connected instances, they were initially offered with AWS' Trainium2 chips, with each UltraServer offering 64 chips.

Trainium3 is the company's first 3nm AI chip, and according to the company, the Trainium3 UltraServer offers up to 4.4x more compute performance, four times greater energy efficiency, and nearly four times more memory bandwidth than the previous generation.

In addition, the UltraServers use the new NeuronSwitch-v1, which delivers twice as much bandwidth within each UltraServer, while enhanced Neuron Fabric networking reduces communication delays between chips to under 10 microseconds.

Announced at the AWS Re:Invent 2025 event in Las Vegas, the Trainium3 UltraServers, now generally available, can scale up to 144 Trainium3 chips, offering 362 FP8 petaflops and four times lower latency for training large models.

Customers can also connect thousands of UltraServers to connect up to 1 million Trainium chips – around 10x as many as the previous generation.

According to AWS, customers that are already using the Trainium3 UltraServers include Anthropic, Karakuri, Metagenomics, Neto.ai, Ricoh, and Splashmusic.

Earlier this year, AWS made UltraServers based on the Nvidia GB200 NVL72 system generally available. In addition to launching the latest Trainium UltraServers, AWS announced during the Re:Invent conference that it was now offering the P6e-GB300 UltraServers, which feature the Nvidia GB300 NVL72 system, describing it as ideal for "AI inference at scale supporting trillion-parameter models with reasoning capabilities in production.

Nidec Accelerates Liquid-Cooling Adoption for AI Generation Data Centers

Nidec Corporation (hereafter "Nidec") today announced the development of a prototype Project Deschutes Coolant Distribution Unit (CDU) compliant with Google Open Compute Project (OCP) specification, initiated by Google LLC (hereafter "Google"). The prototype was exhibited at SC25 (Super Computing 2025), held in St. Louis, USA, in November 2025.

It generated strong interest and was highly praised by industry stakeholders as a next-generation cooling solution designed to address the pressing industry challenge of increasing server heat density in data centers.

The explosive growth in demand for generative AI in recent years has driven a rapid increase in data center construction. Concurrently, the Thermal Design Power (TDP) of installed GPUs and CPUs is continually escalating.

The explosive growth in demand for generative AI in recent years has driven a rapid increase in data center construction. Concurrently, the Thermal Design Power (TDP) of installed GPUs and CPUs is continually escalating.

Main Features:

• High Performance Compliant with Project Deschutes CDU Specifications ;

• Industry-Leading Low Approach Temperature Design ;

• Noise-Free Cooling System that Preserves Power Quality

ABB invests in data center cooling optimization firm OctaiPipe

Power equipment manufacturer ABB has invested in OctaiPipe, a UK-based AI firm focused on optimizing data center cooling systems.

As part of the deal, ABB will take a minority stake in OctaiPipe. Full financial details on the investment were not shared.

The partnership will see the companies supply data center operators with tools to achieve substantial energy savings, strengthen operational resilience, and meet the growing demands for sustainability and transparency.

The OctaiPipe platform uses a range of in-house AI technologies, including federated learning, multi-agent reinforcement learning, and digital twin modeling, to adjust cooling operations in real time while maintaining safety and regulatory standards.

The system is deployed on-site rather than in the cloud, reflecting a design aimed at operators who prioritize data control and scalability. The partnership also includes a defined development roadmap intended to support improvements in reliability and overall performance across data center operations.

ABB has signed several major deals aimed at the data center industry over the past year. For example, last month the company signed a spate of agreements with Texas-based microgrid developer VoltaGrid to supply power system equipment for multiple US data center power projects supporting AI workloads.

Trane acquires liquid cooling solutions provider Stellar Energy Digital

HVAC firm Trane Technologies has acquired data center liquid cooling firm Stellar Energy Digital.

The company this week announced it had entered into a definitive agreement with Stellar Energy International, Ltd. to acquire the Stellar Energy Digital business, a provider of turnkey liquid-to-chip data center cooling solutions.

Terms were not shared. The deal is set to close in early 2026.

Headquartered in Jacksonville, Florida, Stellar Energy designs and builds modular cooling plants, central utility plants and coolant distribution units for liquid-cooled data centers and other corporate enterprises.

The acquisition will include Stellar Energy’s existing Digital business operations, including two assembly operations in Jacksonville, Florida, and its highly skilled team of approximately 700 employees. Stellar Energy Digital will operate within Trane America’s commercial HVAC business, retaining its brand, sales model, and existing customer relationships.

Trane previously invested in liquid cooling provider LiquidStack in March 2023. It previously acquired Italian chiller manufacturer MTA in 2023.

Trane launched a 1MW coolant distribution unit earlier this year. It also offers a fan wall for data centers, as well as chillers, and launched a 300kW CRAH unit in August.

Morgan Stanley & Co. LLC served as the financial advisor to Trane Technologies on the transaction.

Bio-inspired in-chip cooling company Corintis raises $25m in round led by Applied Digital

An in-chip microfluidic cooling company that uses AI for its designs has raised $25 million.

Corintis said that Applied Digital led the investment round, which brought the Swiss-based business's total funding to $58m. Applied Digital began as a cryptomining company, but has since pivoted to AI and HPC workloads, backed by Macquarie Asset Management.

Instead of traditional cold plate technologies, Corintis is developing a system to push coolant through tiny channels etched into chips, with the AI designs bio-inspired, somewhat akin to the veins on a butterfly's wing.

In a September research partnership with Microsoft, Corintis said that it removed heat up to three times better than cold plates.

The startup said that the new funds will be used to help expand its US presence with a Washington, DC, office, as well as ramp up its global footprint for manufacturing microfluidic cooling at scale.

The company also claims to have signed multiple new tech giants as customers since its September Series A, when it raised $24m.

Remco van Erp, co-founder and CEO of Corintis, added: “Applied Digital’s investment highlights the critical role of advanced cooling in unlocking the next wave of high-performance computing.

NJFX plans 10MW liquid-cooled data hall in New Jersey

NJFX is expanding its cable landing station and data center site in New Jersey.

The company, which operates a site in Wall, Monmouth County, announced plans for a new 10MW high-density AI data hall this week.

The firm said the move is supported by the execution of an electric utility load letter supported by a $3 million deposit, targeting power delivery by end of 2026. Bala Consulting Engineers is working with the company for the project.

The 10-acre NJFX campus hosts four subsea cables linking North America to Europe and South America. The company said it has 35 network operators on site.

NJFX said the new hall, internally named Project Cool Water, represents the first purpose-built cable landing station campus in North America to support liquid-to-chip AI-ready infrastructure.

NJFX acquired the property in 2015 in partnership with Tata Communications. In 2022 the company purchased bore pipes from SubCom in Manasquan and Avon to support additional subsea landings in New Jersey.

The is is the landing point of the Havfrue/AEC-2, Seabras-1, TGN-Atlantic South, and the upcoming Confluence-1 systems. The data center totals 64,800 sq ft across two stories. The site features three meet-me rooms.

Magnora plans 100MW data center project in Kristiansund, Norway

Norwegian renewable investment firm Magnora has started work on a new data center project on the western coast of Norway.

The company this week announced it has launched Magnora Scale Averøya, a new 100MW data center project in Kristiansund.

Timelines to develop the 120,000 sqm (1.29 million sq ft) site haven’t been shared.

Magnora is working with owners of Averøy Industripark and Tore Knapskog, who successfully developed and sold Tonstad DataPark to GreenScale.

Magnora will hold 70 percent of the shares in the new entity, Averøy Industripark 22.5 percent, and Torek AS the remaining 7.5 percent.

Kristiansund is a municipality on the western coast of Norway in the Nordmøre district of Møre og Romsdal county.

“This project offers a great opportunity to our target customers, it’s in an industry where time-to-market is decisive and liquid-cooled high-density capacity is critically undersupplied, and the Nordics stand out as an emerging region," said Erik Sneve, CEO of Magnora.

NTT signs 130MW of capacity leases with unnamed hyperscalers

NTT has signed 130MW of data center capacity leases in the US.

The company this week announced agreements between its Global Data Center business and unnamed “leading hyperscale cloud providers,” leasing space across its campuses in Chicago, Dallas, Phoenix, and Virginia.

NTT operates a global network of data centers totaling more than 150 facilities across 20 countries spanning Asia, Africa, Europe, and the US. Most of its facilities outside Japan are operated through its NTT GDC unit.

NTT launches Bengaluru 4

In India, NTT GDC this week launched Bengaluru 4, a new data center campus in Karnataka.

Located on 18 acres at the Prestige Tech Cloud campus in Devanahalli, the site will offer 100MW/67.2MW IT load across three 22.4MW buildings (4A, 4B, 4C) at full build out. The campus is able to support liquid cooling.

NTT entered into an agreement with the Prestige Group to develop a campus in Bangalore/Bengaluru back in 2023. The company is investing around $288 million in the project.

Prestige Group is an India-based property developer, focusing on the residential, commercial, retail, leisure, and hospitality sectors. This latest deal marks the company’s first foray into the Indian data center industry.

Located in Electronic City, Bengaluru 2 offers 4.5MW of critical IT load. Bengaluru 3 provides 12MW of critical IT load and 5,800 sqm (62,430 sq ft) of data center space.

SoftBank considers acquiring data center investor Digital Bridge

apanese investment and telco giant SoftBank is in talks to acquire DigitalBridge, Bloomberg reports.

DigitalBridge had around $108 billion of assets under management at the end of September, including AIMS, AtlasEdge, DataBank, Switch, Takanock, Vantage Data Centers, and Yondr Group.

As of August, the company had 5.4GW of data center capacity in development or operation.

The company was itself valued at $1.8bn earlier today, down 13 percent this year. With the news of the acquisition discussion, shares jumped 31 percent to $2.33bn.

A transaction could happen as soon as the coming weeks, but is not guaranteed.

SoftBank, led by eccentric billionaire Masayoshi Son, has sought to aggressively invest in the generative AI boom, but the debt-laden company has struggled to fund its ambitions.

The company is one of the primary backers of OpenAI's Stargate data center project (and of OpenAI itself) but has yet to provide all the money it pledged.

This November, the company sold its entire stake in Nvidia for $5.83bn to help fund its OpenAI plans - a move that Son said made him cry.

DigitalBridge portfolio company Vantage is behind one of the Stargate projects, a near-gigawatt data center in Wisconsin.