Microsoft Boosts On-Device AI for AMD Systems with KB5063135 Update

A new Windows 11 update, KB5063135, is rolling out to enhance the artificial intelligence capabilities of AMD-powered Copilot+ PCs. This update delivers improvements to the Phi Silica AI component, a key element in Microsoft's strategy to enable powerful, on-device AI experiences.

The update, specifically version 1.2506.707.0 of the Phi Silica AI component, is targeted at systems running Windows 11, version 24H2. It underscores a significant push by Microsoft to optimize and expand local AI processing across a variety of hardware, ensuring that next-generation AI features are not limited to a single chip manufacturer.

What is Phi Silica?

At the heart of this update is Phi Silica, a sophisticated, Transformer-based local language model developed by Microsoft. It is designed to be a small language model (SLM) that is highly optimized for efficiency and performance on the Neural Processing Units (NPUs) found in modern Copilot+ PCs. This allows for many of the capabilities of large language models (LLMs) to run directly on the device, rather than relying on the cloud. The "Phi" branding is used for Microsoft's series of SLMs, and "Silica" suggests its optimization for the silicon of processors, in this case, AMD's.

By leveraging the NPU, Phi Silica can handle sustained AI workloads with minimal impact on the system's overall performance, battery life, and resources. This enables a range of on-device AI features, from enhanced dictation and text summarization to more complex tasks within applications.

Enhancing the AI Experience on AMD Hardware

This update is a crucial step in bringing powerful, local AI features to the latest AMD-powered laptops. AMD has been integrating NPUs into its Ryzen processors, such as the Ryzen AI 300 Series, which are designed to handle complex AI tasks efficiently. The KB5063135 update specifically tunes the Phi Silica component for these AMD processors, ensuring that Windows 11 can seamlessly harness the power of their dedicated AI engines.

This move is part of a broader effort by Microsoft to create a consistent and capable AI experience across all Copilot+ PCs, regardless of whether they are powered by Qualcomm, Intel, or AMD chips. Previously, many advanced AI features were initially launched on Snapdragon-based devices. Updates like this one level the playing field, ensuring that users of AMD systems can access the same cutting-edge AI functionalities.

Key Details of the Update

For users with eligible devices, the KB5063135 update will be downloaded and installed automatically through Windows Update. A key prerequisite is that the PC must have the latest cumulative update for Windows 11, version 24H2, already installed. This update replaces a previous version of the Phi Silica component, KB5061858, which was released in May 2025.

Users can verify the installation by navigating to Settings > Windows Update > Update history. The update will be listed as "2025-06 Phi Silica version 1.2506.707.0 for AMD-powered systems (KB5063135)".

The Future of AI on Windows

The rollout of the Phi Silica AI component is a foundational element of Microsoft's vision for the "AI PC"—a new generation of computers where artificial intelligence is deeply integrated into the operating system. By moving AI processing from the cloud to the device, Microsoft aims to deliver faster, more private, and more responsive user experiences.

This update is part of the larger Windows 11 24H2 feature update, which introduces a range of AI-powered capabilities. These include features like Live Captions for real-time translation, Cocreator in Paint for generating images from text and sketches, and an AI-enhanced Photos app. While some of these features were initially exclusive to certain hardware, they are progressively being rolled out to all compatible Copilot+ PCs. This ongoing development, marked by component updates like KB5063135, signals a transformative phase for personal computing, weaving AI into the daily workflow of Windows 11 users.