SBC

Hey, What SBC to buy with low power mode?
Where can i download linux version?

Linux version of RealDash are available in Downloads section of My RealDash:

my.realdash.net

What is better rasberry pi4 or vim4

How to handle power supply

Did you try?

Rock 3A: Dual M.2 ARM SBC with eMMC socket

or this

https://www.eurotech.com/en/products/boards-modules/small-form-factor/cpu-301-16