I don’t think the tech in Dune runs on magic, it’s just some of the abilities people like the Bene Gesserit have is basically magic. Even that’s kinda explained by thousands of years of breeding programs and crazy amounts of training, but sure it’s basically magic. But the tech is just tech. It’s just that their tech is weird because it’s illegal to use computers.
For example space folding is done by Navigators who used spice simply because they didn’t have the computers needed to do the complex calculations. Later the Ixians make devices that can do those same calculations without the need for mutant human-worms living in a vat of spice.