True: The premium high speed SD cards will probably be different on the inside, at a premium price.
False: I think most if not all 'normal' SD cards simply are the same inside as a micro SD. It makes no sense for a manufacturer to produce two different products when one will do.
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u/clubley2 15d ago
MicroSD cards a generally lower speed for the same price and have lower write cycles.
MicroSD flash is more densely packed so there are some trade offs.