Jeremy Ruston the creator, says a 100MB TiddlyWiki works fine on a 2013 era laptop, and that browsers are some of the best optimized VMs available to work on (in the video I linked in another comment).

Most of knowledge is text, maybe a picture here and there.

I, a lifetime worth of knowledge in reasonable HTML of Tiddly Wiki would take less toll on your PC then the current CNN front page.

you can use tiddywiki with a node backend.

https://github.com/djmaze/tiddlywiki-docker

if you want to host on arm device, https://github.com/djmaze/tiddlywiki-docker/issues/15