--snip--
Actually bitcoin core is very easily running on my machine. It's all the other features that I want to enable.
The computer that you have presented above looks good. Thanks, I will try to find one.
on your machine... yes... if i had to take a guess, i'd say odds are >90% you're using an x86_64 architecture with either windows, linux or mac OS... And for those combinations, a precompiled binary is available.
An raspberry pi has an arm architecture and runs linux (usually), this combo also has a precompiled binary available...
But when you try to switch to more "exotic" alternatives, you just have to double check... IIRC, arduino (for example) uses a different cpu architecture. I've also heared about single board computers using PowerPC, RISC-V, PIC, SPARC,... architectures. I guess most rPi alternatives will have a precompiled binary available (usually they'll have an ARM architecture), it's just something you have to double check beforehand. You don't want to buy an SBC having a PowerPC cpu architecture and then be surprised it's not that easy to install your favorite linux distro, and even harder to manually compile all the (bitcoin related) tools you need.
Now, the link i posted before has a disk that's to small for the full blockchain, but it has an x86_64 architecture. If you find one with an 1Tb disk, you're golden... It might cost you 10 or 20 bucks more, but you'll have a silent, small, reasonably power efficient device that should be very easy to slap the disk image provided by mynode onto by just following their walktroughs (disclaimer: i don't run mynode, so i have not tested this claim!!!)