AMD has introduced its Ryzen AI Max 400 series, expanding its AI-focused processor lineup with a refreshed design based on the “Strix Halo” platform. The new series builds on the foundation of the Ryzen AI Max 300 generation but brings important updates aimed at handling larger AI workloads, higher memory capacity, and improved integrated graphics performance. The launch also highlights AMD’s continued push into AI PCs and workstation-class mobile systems, where local processing power is becoming increasingly important.
At the top of the lineup is the Ryzen AI Max+ PRO 495, featuring up to 16 Zen 5 CPU cores and 32 threads with boost speeds reaching up to 5.20 GHz. The processor integrates a fully enabled RDNA 3.5-based GPU with 40 compute units, making it the most powerful configuration in the series. Alongside this, the chip includes a 55 TOPS neural processing unit, offering improved on-device AI acceleration compared to the previous generation. AMD has also slightly increased GPU and CPU boost frequencies across the lineup, helping improve sustained performance in demanding workloads.
The Ryzen AI Max 400 series now supports up to 192 GB of LPDDR5X memory through a 256-bit wide interface, which is a notable upgrade over the previous 128 GB limit found in the Ryzen AI Max 300 series. The expanded memory capacity also allows flexible allocation between system memory and GPU memory, with up to 160 GB potentially usable as VRAM. This design is particularly useful for AI development tasks and large-scale inference workloads that require significant memory bandwidth and capacity.
AMD has positioned the platform to support large language models, with the updated memory architecture enabling compatibility with models exceeding 300 billion parameters. This makes the Ryzen AI Max 400 series more suitable for AI researchers, developers, and enterprise users working directly on-device rather than relying entirely on cloud-based infrastructure.
The lineup also includes the Ryzen AI Max PRO 490 and Ryzen AI Max PRO 485. The 490 model offers a 12-core Zen 5 CPU with a 32 CU integrated GPU, while the 485 steps down to an 8-core configuration but retains similar GPU and AI capabilities. Both models feature a 50 TOPS NPU, ensuring consistent AI acceleration across the stack. All processors in the series include AMD PRO features designed for enterprise-level security and manageability, positioning them as alternatives to competing business platforms such as those from Intel.
AMD is also preparing updated Ryzen AI Halo systems based on the Ryzen AI Max+ PRO 495 paired with 192 GB memory configurations, expected to target high-end AI development machines and workstation-class devices. With this update, AMD continues to strengthen its position in the growing AI PC segment, focusing on combining CPU, GPU, and NPU resources into a unified high-memory platform designed for modern AI workloads.
