Why ARM Boards
ARM boards are a great choice for running an Ethereum Full/Archive/Staking node. Among others:
Ethereum On ARM PnP images, just flash & power up
Affordable: you can run a Full Ethereum EL / Ethereum CL nodes for less than $300
Efficient, resources are focused on 1 task: run the node
Low power consumption. An ARM64 boar consumes ~10w
Small factor size: Great for running at home as it fits in any corner
Great for running 24/7: Small, affordable and low power consumption