this post was submitted on 23 Aug 2025
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If you want really cheap and low power, a Raspberry Pi will do for most tasks.
If you want more processing power, an old Thinkpad laptop is reliable and has a built-in UPS (a laptop battery).
Any desktop computer will give you the customisation and upgradability you want, but you'll need to decide on each part individually. I don't have any specific recommendations here.
Eh, RPI pushes you to use a microSD card which sucks in a few ways. They also aren’t all that cheap.
Used thin client is the way to go
You can leave just the /boot partition in the SD and put the root fs in an external USB drive (SSD or mechanical).
I’have a SIMH emulation farm running inside a Pi3 which has been up literally for years. Zero trouble.
@Amberskin
On Pi5 no need for SD it boots and runs perfectly well from SSD.
Oh, really? I guess I’ll have to check the EEPROM stuff…
@Amberskin
The Pi4 needs some updates and settings but the 5 natively boots from SSD.