January 6th, 2025

AMD 'Strix Halo' Ryzen AI Max+ Debuts with RDNA 3.5 Graphics and Zen 5 CPU Cores

AMD introduced its Ryzen AI Max+ processors at CES 2025, featuring a 40-core GPU and Zen 5 architecture, promising significant performance gains in gaming and AI tasks with low power consumption.

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AMD 'Strix Halo' Ryzen AI Max+ Debuts with RDNA 3.5 Graphics and Zen 5 CPU Cores

AMD has unveiled its new 'Strix Halo' Ryzen AI Max+ processors at CES 2025, designed for high-performance gaming and AI workloads. These advanced APUs feature a 40-core RDNA 3.5 integrated GPU and a Zen 5 CPU architecture, promising significant performance improvements over competitors. The flagship Ryzen AI Max+ 395 model boasts 16 CPU cores, 32 threads, and supports up to 128GB of shared memory, which can be allocated for GPU use, achieving a memory throughput of 256 GB/s. AMD claims the AI Max+ delivers up to 1.4 times faster gaming performance than Intel's Lunar Lake Core Ultra 9 288V and up to 2.2 times better performance in AI tasks compared to the Nvidia RTX 4090, all while maintaining a lower thermal design power (TDP) of 55W. The processors are expected to be available in various configurations, with the potential for desktop versions in the future. AMD's benchmarks indicate strong performance in gaming and content creation, although real-world performance comparisons remain to be seen. The Ryzen AI Max series is set to be integrated into systems from partners like HP and Asus throughout 2025.

- AMD's Ryzen AI Max+ processors feature a 40-core RDNA 3.5 GPU and Zen 5 CPU architecture.

- The flagship model supports up to 128GB of shared memory, achieving 256 GB/s throughput.

- Claims include 1.4X faster gaming performance than Intel's top processor and 2.2X better AI performance than Nvidia's RTX 4090.

- The processors have a base TDP of 55W, indicating high power efficiency.

- Systems featuring these processors are expected to launch in 2025 from various OEMs.

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Link Icon 12 comments
By @Lerc - 3 months
If it runs pytorch at speed without hand holding I would probably get one.

If it runs tinygrad at speed(a lower bar developmentally) I might get one.

Is there a model benchmarking site where you can select varying degrees of models by source code and see how they perform on different hardware. It would assist people to evaluate whether or not a specific piece of hardware is good for the jobs that they want it to do.

By @kcb - 3 months
By @ncann - 3 months
> AMD 'Strix Halo' Ryzen AI Max+ 395 PRO

Gosh that name is a mouthful

By @jsheard - 3 months
This is the first x86 SoC to follow the lead set by Apple Silicons huge unified memory bus.

Bandwidth is more or less on par with the M4 Pro, and it supports up to 128GB.

By @ksec - 3 months
I cant find any information on memory it uses for its 256GB/s. It said New Memory interface. Seems high even for 256Bit LPDDR5X.

Zen 5 CPU, RDNA 3.5 GPU, and XDNA 2 NPU. No word on process nodes.

By @UncleOxidant - 3 months
> If AMD keeps with tradition, which we fully expect, we will see these monstrous APU chips come to desktop PCs in the future.

How far in the future? I don't need another laptop, but would be nice to have a box to run local llms on. If these things can run LLMs at a decent clip then this would be sort of a "shut up and take my money" situation.

By @jmward01 - 3 months
If they can deliver the drives and support for pytorch out of the box then I know what my next laptop will have in it.
By @sliken - 3 months
The strix halo announce was pretty much exactly what was leaked.

However one big surprise was that the Halo 395 chip runs Llama 3.1 70B-Q4 2.2x times faster than a RTX 4090 24GB. Anyone have any details? The slide mentions seeing AMD endnote SHO-14 for details.

Maybe 70B-Q4 doesn't fit in 24GB?

By @sabareesh - 3 months
About 4090 it is bad metric because that given model wont fit on 4090 Grrr Nvidia.
By @DrNosferatu - 3 months
Wasn’t intel floating a iGPU with 128GB VRAM?
By @sylware - 3 months
mmmmh.... I wonder how much the CPU ram usage will slow down the GPU with real life loads.
By @okasaki - 3 months
> AMD says this delivers groundbreaking capabilities for thin-and-light laptops

Laptops with 120W cpus aren't thin or light.