Also depends on use cases. Everyone's is different. I could probably run all the code that's on one of my servers (dozens of different applications that server hundreds of users) off a modern android phone.
People use RasPis as servers and PCs all the time, and a top-end android phone can often do more.
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You must have had some weak computers then because I cannot imagine that being true with any modern and/or powerful system.
Also depends on use cases. Everyone's is different. I could probably run all the code that's on one of my servers (dozens of different applications that server hundreds of users) off a modern android phone.
People use RasPis as servers and PCs all the time, and a top-end android phone can often do more.