Wednesday, September 10th 2025
Arm Launches Lumex Compute Subsytem Platform for Next-Gen Devices
AI is no longer a feature, it's the foundation of next-generation mobile and consumer technology. Users now expect real-time assistance, seamless communication, or personalized content that is instant, private, and available on device, without compromise. Meeting these expectations requires more than incremental upgrades, it demands a step change that brings performance, privacy and efficiency together in a scalable way.
Introducing Arm Lumex
That's why we're introducing Arm Lumex, our most advanced compute subsystem (CSS) platform, purpose-built to accelerate AI experiences on flagship smartphones and next-gen PCs.Lumex unites our highest performing CPUs with Scalable Matrix Extension version 2 (SME2), GPUs and system IP, enabling the ecosystem to bring AI devices to market faster and deliver experiences from desktop class mobile gaming to real time translation, smarter assistants, and personalized applications.
We are enabling SME2 across every CPU platform and by 2030, SME and SME2 will add over 10 billion TOPS of compute across more than 3 billion devices, delivering an exponential leap in on-device AI capability.
Partners can choose exactly how they build Lumex into their SoC - they can take the platform as delivered and leverage cutting-edge physical implementations tailored to their needs, reaping time to market and time to performance benefits. Alternatively, partners can configure the platform RTL for their targeted tiers and harden the cores themselves.
Lumex and our simplified naming conventions across the Arm portfolio were announced earlier this year.
The platform combines:
The SME2-enabled Arm C1 CPU cluster provides dramatic AI performance gains for real-world, AI-driven tasks:
So what does this mean in real world use cases? SME2 can deliver a whole new level of responsiveness and efficiency. For example, our Smart Yoga Tutor demo app saw a 2.4x boost in text-to-speech, meaning users get instant feedback on their poses, all without draining battery life. Together with Alipay and vivo, we achieved 40% reduction in the time it takes for LLM response for interaction with the user, proving SME2 is delivering faster real-time generative AI on-device.
SME2 isn't just about speed; it's also unlocking AI-powered capabilities that traditional CPUs can't match. For example, neural camera denoising now runs at over 120 FPS in 1080p or 30 FPS in 4K, all on a single core. That enables smartphone users to capture sharper, crystal-clear images even in the darkest scenes, allowing for smoother interactions and richer experiences on everyday devices.
Unlike cloud-first AI, which is constrained by latency, cost, and privacy concerns, Lumex brings intelligence directly to the device where it's faster, safer, and always available. SME2 is being embraced by leading ecosystem players including Alibaba, Alipay, Samsung LSI, Tencent and vivo.
Architectural Freedom for Every Product Tier
Lumex offers partners the freedom to balance peak performance, sustained efficiency, and silicon area in products ranging from high-end smartphones and PCs to emerging AI-first form factors:Enabling Desktop-Class Gaming and Faster AI Inference on Mali GPU
With over 12 billion Arm GPUs shipped to date, Arm is at the center of mobile gaming experiences. The new Arm Mali G1-Ultra GPU continues to push the boundaries of mobile gaming, delivering high-fidelity, console-class graphics. This is made possible by a brand-new Ray Tracing Unit v2 (RTUv2), powering advanced lighting, shadows and reflections, leading to a 2x uplift in ray tracing performance compared to its predecessor. For AI workloads, the G1-Ultra enables up to 20% faster inference performance, enhancing responsiveness across real-time applications.
The Mali G1-Ultra delivers 20% better performance across graphics benchmarks compared to the previous generation, with across-the-board improvements for leading titles, including Arena Breakout, Fortnite, Genshin Impact, and Honkai Star Rail. The G1-Premium and G1-Pro GPUs deliver superior performance and power-efficiency for constrained devices.
Finally, Developer-Friendly AI for Mobile
For developers, AI experiences just work on the Lumex platform. Through the KleidiAI integration across major frameworks including PyTorch ExecuTorch, Google LiteRT, Alibaba MNN and Microsoft ONNX Runtime, apps automatically benefit from SME2 acceleration with no code changed required.
For developers building cross-platform apps, Lumex brings new portability:
Arm Lumex: Platform-Level Intelligence for the AI Era
Arm Lumex is more than our most advanced CSS platform for the consumer computing market, it's the foundation for the next era of intelligent AI-enabled experiences. Whether you're an OEM or developer, Lumex gives you the tools to deliver personal, private and high-performance AI at the edge, where it matters most. Built for the AI era, Lumex is where the future of mobile innovation begins.
Source:
Arm Lumex Platform
Introducing Arm Lumex
That's why we're introducing Arm Lumex, our most advanced compute subsystem (CSS) platform, purpose-built to accelerate AI experiences on flagship smartphones and next-gen PCs.Lumex unites our highest performing CPUs with Scalable Matrix Extension version 2 (SME2), GPUs and system IP, enabling the ecosystem to bring AI devices to market faster and deliver experiences from desktop class mobile gaming to real time translation, smarter assistants, and personalized applications.
We are enabling SME2 across every CPU platform and by 2030, SME and SME2 will add over 10 billion TOPS of compute across more than 3 billion devices, delivering an exponential leap in on-device AI capability.
Partners can choose exactly how they build Lumex into their SoC - they can take the platform as delivered and leverage cutting-edge physical implementations tailored to their needs, reaping time to market and time to performance benefits. Alternatively, partners can configure the platform RTL for their targeted tiers and harden the cores themselves.
Lumex and our simplified naming conventions across the Arm portfolio were announced earlier this year.
The platform combines:
- Next-generation SME2-enabled Armv9.3 CPU cluster including C1-Ultra and C1-Pro, powering flagship devices
- New C1-Premium, purpose built for the sub-flagship market, providing best in class area efficiency
- New Mali G1-Ultra GPU with next-generation ray tracing enabling advanced graphics and gaming, plus a boost to AI performance
- The most flexible and power-aware DynamIQ Shared Unit (DSU) Arm has delivered to date: C1-DSU
- Optimized physical implementations for 3 nm nodes
- Deep integration across the software stack delivering seamless AI acceleration for developers using KleidiAI libraries
The SME2-enabled Arm C1 CPU cluster provides dramatic AI performance gains for real-world, AI-driven tasks:
- Up to 5x uplift in AI performance
v4.7x lower latency for speech-based workloads - 2.8x faster audio generation
So what does this mean in real world use cases? SME2 can deliver a whole new level of responsiveness and efficiency. For example, our Smart Yoga Tutor demo app saw a 2.4x boost in text-to-speech, meaning users get instant feedback on their poses, all without draining battery life. Together with Alipay and vivo, we achieved 40% reduction in the time it takes for LLM response for interaction with the user, proving SME2 is delivering faster real-time generative AI on-device.
SME2 isn't just about speed; it's also unlocking AI-powered capabilities that traditional CPUs can't match. For example, neural camera denoising now runs at over 120 FPS in 1080p or 30 FPS in 4K, all on a single core. That enables smartphone users to capture sharper, crystal-clear images even in the darkest scenes, allowing for smoother interactions and richer experiences on everyday devices.
Unlike cloud-first AI, which is constrained by latency, cost, and privacy concerns, Lumex brings intelligence directly to the device where it's faster, safer, and always available. SME2 is being embraced by leading ecosystem players including Alibaba, Alipay, Samsung LSI, Tencent and vivo.
Architectural Freedom for Every Product Tier
Lumex offers partners the freedom to balance peak performance, sustained efficiency, and silicon area in products ranging from high-end smartphones and PCs to emerging AI-first form factors:Enabling Desktop-Class Gaming and Faster AI Inference on Mali GPU
With over 12 billion Arm GPUs shipped to date, Arm is at the center of mobile gaming experiences. The new Arm Mali G1-Ultra GPU continues to push the boundaries of mobile gaming, delivering high-fidelity, console-class graphics. This is made possible by a brand-new Ray Tracing Unit v2 (RTUv2), powering advanced lighting, shadows and reflections, leading to a 2x uplift in ray tracing performance compared to its predecessor. For AI workloads, the G1-Ultra enables up to 20% faster inference performance, enhancing responsiveness across real-time applications.
The Mali G1-Ultra delivers 20% better performance across graphics benchmarks compared to the previous generation, with across-the-board improvements for leading titles, including Arena Breakout, Fortnite, Genshin Impact, and Honkai Star Rail. The G1-Premium and G1-Pro GPUs deliver superior performance and power-efficiency for constrained devices.
Finally, Developer-Friendly AI for Mobile
For developers, AI experiences just work on the Lumex platform. Through the KleidiAI integration across major frameworks including PyTorch ExecuTorch, Google LiteRT, Alibaba MNN and Microsoft ONNX Runtime, apps automatically benefit from SME2 acceleration with no code changed required.
For developers building cross-platform apps, Lumex brings new portability:
- Google apps like Gmail, YouTube and Google Photos are already SME2-ready, ensuring seamless integration as Lumex-based devices hit the market
- Cross-platform portability means optimizations built for Android can seamlessly extend to Windows on Arm and other platforms
- Partners like Alipay are already showcasing on device LLMs running efficiently with SME2
Arm Lumex: Platform-Level Intelligence for the AI Era
Arm Lumex is more than our most advanced CSS platform for the consumer computing market, it's the foundation for the next era of intelligent AI-enabled experiences. Whether you're an OEM or developer, Lumex gives you the tools to deliver personal, private and high-performance AI at the edge, where it matters most. Built for the AI era, Lumex is where the future of mobile innovation begins.




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