Microsoft Posts Specs For 800 Volt Datacenter Power
Microsoft published a post on its Azure blog on October 13, 2026, written for the Open Compute Project community at OCP Global Summit 2026. It describes what Microsoft is contributing to open datacenter hardware. Everything below comes from that post.
Transcript
Microsoft published a plan to make artificial intelligence use less power. It reaches the electrical supply.
Microsoft's Azure blog posted this on October thirteenth. It contributes specifications to the Open Compute Project.
Microsoft backs eight hundred volt direct current. Mount Diablo separates power conversion and scales beyond a megawatt.
Microsoft says Mount Atlas nearly doubles cooling capacity within the same footprint, using separate water loops.
The post states Multipath Reliable Connection scales beyond one hundred thousand graphics processors.
Microsoft with Marvell and Oracle are publishing an open source hardware security design. This vendor post gives no deployment dates or verification.
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Sources
Every claim in this video comes from the top ranking coverage of this topic. The claims and where each one came from:
- Relied on as the sole and first-party source for every narrated and onscreen claim in this Short: that Microsoft published this post on its own Azure blog on October 13, 2026 for the Open Compute Project community at OCP Global Summit 2026 and framed it as contributed specifications rather than a product announcement; that Microsoft is helping advance the industry transition toward 800 volt direct current infrastructure through OCP and the Open Systems for AI initiative; that Mt. Diablo is Microsoft's disaggregated high-voltage datacenter sidecar architecture which separates power conversion from the compute rack so each can scale independently, with a modular design supporting approximately 100 kilowatts to beyond one megawatt plus redundant feeds, telemetry and optional energy storage, and that Mt. Diablo specifications v0.7 and v1.0 were contributed to OCP; that Microsoft and partners are advancing solid-state transformer-based architectures, are developing open requirements through OCP's Clean Backup Power initiative to reduce reliance on diesel, and released a common grid-interface specification; that Mt. Atlas, the third-generation Azure Heat Exchanger Unit, nearly doubles cooling capacity compared to the previous generation while maintaining the same operational footprint, with public reference architecture contributed through OCP; that Microsoft is advancing a zonal cooling strategy using multiple independent water loops each supplying coolant at different temperatures; that Microsoft developed Multipath Reliable Connection, whose multi-plane architecture scales beyond 100,000 GPUs with two network tiers and which uses packet spraying to limit congestion; that the Optical Compute Interconnect Multi-Source Agreement is the first optical specification for multi-rack scale-up systems; that the Ethernet for Scale-Up Networking workstream brings together more than 175 organizations, has released specification version 1.0, and is developing version 1.1 for later this year; and that Microsoft, Marvell, and Oracle are introducing Tessera Integrated HSM as an open-source initiative for integrated hardware security modules, open-sourcing its architecture, specifications, protocols, drivers, software, firmware, and silicon, carrying forward the architecture introduced by Azure Integrated HSM with Microsoft's in-house security chip in all new datacenter servers, alongside Microsoft's founding role in the Confidential Computing Consortium, Caliptra as an open-source silicon root of trust, and the OCP S.A.F.E. conformance framework. It is also relied on for the negative claims in the closing scene, namely that the post contains no deployment dates, no count of datacenters using these designs, no cost figures, no absolute power or water consumption numbers, no measured result from a live site, and no third party verification of any figure. It is not relied on for any launch, availability, benchmark, or audited efficiency claim, because the post makes none.(Provenance note, not a real video title. The single source for this script is Microsoft's own Azure blog post at https://azure.microsoft.com/en-us/blog/infrastructure-for-the-frontier-era-scaling-intelligence-through-open-industry-collaboration/, headlined on the page as Infrastructure for the frontier era: Scaling intelligence through open industry collaboration and carried in our alert feed as Making AI more efficient, from the chip to the power grid. It was published on October 13, 2026 and the live URL was fetched and matched against the captured snapshot on October 14, 2026, so the story is one day old at production time and no narration line uses same-day wording. The bylines are Reynold D'Sa, corporate vice president for Silicon, Cloud Hardware, and Infrastructure Engineering, and Rani Borkar, president of Azure Hardware Systems and Infrastructure, both Microsoft executives writing about Microsoft. The post is first-party vendor communication timed to OCP Global Summit 2026 and addressed to the Open Compute Project Foundation community. It is thought leadership and a summary of contributed specifications and initiatives, not a product launch, not a news report, and not an engineering disclosure; several items in it are specifications, workstreams, or reference architectures rather than shipped products. Because of that, every factual sentence of narration carries an out-loud attribution phrase and a different phrase is used each time, and the closing scene states plainly that this is a vendor post with no deployment dates and no outside verification. Every figure quoted on screen is Microsoft's own number, supplied by Microsoft and not independently measured or audited by anyone outside the company: the 800 volt direct current transition, the approximately 100 kilowatt to beyond one megawatt Mt. Diablo range, the Mt. Diablo v0.7 and v1.0 specification contributions, the claim that Mt. Atlas nearly doubles cooling capacity in the same operational footprint, the claim that Multipath Reliable Connection scales beyond 100,000 GPUs with two network tiers, the more than 175 organizations in the Ethernet for Scale-Up Networking workstream, and the released version 1.0 specification with version 1.1 in development. Corroboration: none exists. The YouTube research step retrieved zero of five candidate transcripts because the installed yt-dlp build on this host cannot fetch captions, so no fact in this script rests on corroborating video material and none is cited anywhere. No second outlet, regulator filing, auditor report, or site measurement was available to check any claim in the post. The post publishes no deployment dates, no count of datacenters running Mt. Diablo or Mt. Atlas, no cost figures, no absolute power or water consumption numbers, and no measured efficiency result from any live site, and each of those gaps is named on a NOT PUBLISHED line on screen. Angle note: the Azure Maia 300 accelerator is discussed at length in the same post and is deliberately excluded from this script's narration and from four of the five onscreen blocks, because this channel already published a separate Short about Maia 300 on October 12, 2026 under the slug microsoft-maia-300, titled Microsoft's Maia 300 Is Announced, Not Available, which already covered the seven times rack-scale token throughput figure against Maia 200, performance per watt, and the 2027 availability window. Maia 300 therefore appears only once, as a single context mention in the scene one onscreen block, and is never spoken. The Circular Centers server reuse and recycling percentage is likewise excluded because a previous Short already covered it. The required angle for this Short is the rest of the stack that this channel has never covered: power delivery, cooling, networking, and open-sourced hardware security.)