#ServeTheHome takes a look at the first 1-liter PC to (unofficially) support 128GB of RAM, the Lenovo M75q Tiny Gen5.
reviewed unit has an AMD Ryzen 7 Pro 8700GE processor, 35 watt TDP.
overall a very promising Proxmox box, only stumbling blocks are that it still ships with 1Gbps ethernet, and SATA is no longer supported.