cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

AI Discussions

maitas
Journeyman III
2 weeks ago

Maximum iGPU VRAM per Ryzen model?

 

Hi Team. I need to run a big LLM. I saw a document that shows that AI MAX+395 can use 128GB of unified memory.
I need to be able to set 64GB to the iGPU. Is there a list with the ammount of the maximum VRAM it is supported in each Ryzen model? 
https://www.amd.com/en/developer/resources/technical-articles/2025/amd-ryzen-ai-max-395--a-leap-forw...

But I don't need 128GB VRAM, just 64GB is enough and maybe a cheaper RyzenAI might be enough.
I also checked the "Processor Specifications"
https://www.amd.com/en/products/specifications/processors.html 
and there is no column about the maximum VRAM for the iGPU.

Do you know if there is a table that shows this info per Ryzen model?
Labels
1 Solution
gc9
Adept III
2 weeks ago

The maximum depends on the operating system and maybe the BIOS.

Some Ryzen AI Max reviews report that MS Windows can dedicate 3/4 memory to the iGPU, while Linux permits higher limits.

Some reports say to accomodate the largest models, dedicate a minimum to the GPU (512MB or 8GB) and let the operating system allocate the rest out of shared system memory.  e.g.

* https://www.reddit.com/r/FlowZ13/comments/1klf8sp/qwen3235ba22b_on_linux_full_experts_q3_k_l/ 

* https://www.reddit.com/r/LocalLLaMA/comments/1kmi3ra/amd_strix_halo_ryzen_ai_max_395_gpu_llm/

If you're looking at Ryzen AI Max models, then there are currently no product configurations offered between 64 and 128GB, so if you need 64GB for your model, then you need more than 64GB of memory, and 128GB is the only choice.  If 96GB configurations become available, then that could be an option.

View solution in original post

1 Reply
gc9
Adept III
2 weeks ago

The maximum depends on the operating system and maybe the BIOS.

Some Ryzen AI Max reviews report that MS Windows can dedicate 3/4 memory to the iGPU, while Linux permits higher limits.

Some reports say to accomodate the largest models, dedicate a minimum to the GPU (512MB or 8GB) and let the operating system allocate the rest out of shared system memory.  e.g.

* https://www.reddit.com/r/FlowZ13/comments/1klf8sp/qwen3235ba22b_on_linux_full_experts_q3_k_l/ 

* https://www.reddit.com/r/LocalLLaMA/comments/1kmi3ra/amd_strix_halo_ryzen_ai_max_395_gpu_llm/

If you're looking at Ryzen AI Max models, then there are currently no product configurations offered between 64 and 128GB, so if you need 64GB for your model, then you need more than 64GB of memory, and 128GB is the only choice.  If 96GB configurations become available, then that could be an option.