Matt Cole has spent three years writing data to 351 microSD cards until they die, and 177 have already failed. His test spans 111 models across 52 brands, with over 133 petabytes written. PNY, Kingston and Delkin lead the consumer rankings, while SanDisk, ADATA and onn fared badly. The biggest takeaway: high endurance cards barely outlast regular ones, despite the premium on the packaging.
