How Memory Cards Are Made and Why Quality Varies
Memory cards are not identical, delicate pieces. Quite the opposite: production output varies a lot, and the process is all about efficiency and recovery.
How cards are sorted and labeled
- Product labeling is based on post-production testing, which sorts the cards into bins.
- The raw product is a commodity, and the quality and quantity available on the market vary.
- One commentator described a particular memory card vendor's output as "catch of the day".
What this means for performance
The performance of a particular microSD card can differ from a card by another manufacturer, and even from the "same" card made by the same manufacturer.
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