Do you really need 64gb though? Do you want a PCIe in a low wattage, low air circulation mini PC? Are you running a docker swarm of VMs within the same system? Why?
What’s your use case for this?
You won’t get Local LLMs if the PSU is minuscule. Best get a big old workstation with good cooling. Fried motherboards overloading them with local LLMs. That stuff is mean on hardware.