Hello!
I’m looking into buying a system for running inference with small to medium size LLM models. I wonder, is there any AM5 CPU + Chipset combination that supports 2x PCIe 16x with all lanes connected directly to the CPU? From what I’ve gathered my understanding is that there is no such configuration because the Ryzen 7000/9000 only have 24 PCIe lanes at best. This means I have to go for a Threadripper configuration, which is much more expensive. (The ROCm mGPU documentation states that all lanes shall be connected directly to the CPU.)
It’s possible that I can manage running two GPUs with 8x lanes, but it’s for sure not optimal…
But the thing is, it is quite hard for me to navigate the AMD website and the websites of various motherboard producers. I might very well be wrong.
So again: Is there any AM5 CPU + chipset combination that supports 2x PCIe 16x with all lanes connected directly to the CPU?
4 lanes are usually reserved for internal PCIe devices.