# LLM across different generation GPUs (RDNA3 and RDNA4)?

> Source: <https://forum.level1techs.com/t/llm-across-different-generation-gpus-rdna3-and-rdna4/254920#post_1>
> Published: 2026-09-03 12:39:45+00:00

[Hondo](https://forum.level1techs.com/u/Hondo)
1
Simple question. Probably a complex answer. I have an 7900XT which I’ve dabbled with local LLMs on but I need more VRAM and will likely get a Radeon Pro R9700. The extra 12GB will be enough (it’s never enough!) but I’d like to get a little boost by having the 42GB of both cards if it’s possible to run models and context across both.

I’m new to this but I have a hunch trying to mix generations probably wouldn’t work well. Is that so?