That's pretty slick. You're probably going directly into an NVMe slot vs NVMe memory on a PCIe slot.
I haven't 'built' a PC in a few decades. It might be a fun project but I'm not sure what I would do with it afterwards ;-)
When I was working I managed to repurpose a couple older servers to the SETI project and then Folding@home. The electric bill was on the company dime. I even let them have a few cycles from my Mac Mini but that was notoriously slow compared to some of the built up PCs with NVIDA GPU.
