Just keep in mind a lot of those are integrated motherboards (non-upgradable parts)
Yeah that’s what bothers me. But a 256GB upgrade on AM5 is $800 and extremely slow compared to the 128GB non upgradeable on Max+. So really it comes down to 1pcie slot vs 3 or 4. If there’s a usb4 to PCIe adapter, even that’s not a limitation.
I think the NPU is generally worthless but the 128GB of fast ram makes local LLM like deep seek feasible. ( I watch a lot of level1techs on YouTube. )
The concerns you brought up are the same I have!
It’s not the pre built that makes current desktops obsolete. It’s the quad chanel ddr5 8000 in the AI Max+ platform.