Talos have as low as 8 core desktop options as well this is just an example of how far you can take FLOSS hardware. Not that I consider a 16 core x86 desktop "consumer-grade" in the first place (speaking as a 5950X owner).

Probably not fit for replacing Grandma's budget PC but then again grandma probably isn't worried about the ARM cross compile performance of their machine running NixOS either.