Unreadable blocks are simply mapped out and become non-addressable and inaccessible from the outside. During the manufacture, the chip is tested for defects. The memory chips are manufactured with abundant capacity. So how exactly are manufacturers able to achieve these unbelievably low memory prices? They do smart tricks to make the memory card appear as 64 GB of contiguous space while in fact the actual chip is riddled with defects.Įach memory card employs a tiny microcontroller that maps flash cells to logical addresses. Why you can buy a 64 GB micro SDXC memory card off Amazon for not much more than $20, the actual flash memory the manufacturer puts in these cards is of a completely different quality compared to that of a typical SSD drive. The answer is buried in the question itself. In fact, you can’t really buy 64 gigs of high-quality flash memory for under $20, and there is a good reason why SSD drives are that much more expensive compared to SD or micro SD cards.
But there is something about these cards you should know before you reach for a data recovery tool.Ĭan you believe you can buy the whole 64 gigabytes of fast, high-quality solid-state memory for as little as $20, or does it sound too good to be true? Why is an SSD drive of said capacity three to four times as expensive as a much smaller SD card with similar capacity? Isn’t it using exactly the same type of memory, just in a different shell? Fortunately, the market offers numerous data recovery tools that can help you get your data back.
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