How to tell a Legitimate 128GB SD card

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SD cards

it is pretty simple to tell the capacity grading on a SD card, just look at the following table:

There are three standards for capacity:

SD standard - Up to 2GB SD memory card using FAT 12 and 16 file systems

SDHC standard - over 2GB-32GB SDHC memory card using FAT32 file system

SDXC standard - over 32GB-2TB SDXC memory card using exFAT file system

MAKE SURE BEFORE BIDDING that the Picture of the item, has the capacity you require, in this case a SDXC, it doesnt matter what the Title says, if it states 128GB,  but the Picture says SDHC, you know full well, that it Isnt.

SDHC cards Aren't rated for 128GB loads. you get 32, at best, although some unscrupulous types use 4GB, format it to the largest size they can, which in this case is 128GB, and sell it as that, even though the physical space on the thing, is still 4GB.
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Micro SD card

This size differentiality mentioned above, is far far more widespread in Micro SD cards, as these are the cards Smartphones, tablets and some cameras use. 

Again, check the list below, SDHC is NOT rated as 128GB capacity. You dont know how many people fall for this trick.  the listing text and the title May say 128GB, and look all official, and like you're getting a bargain, but it's not worth the hassle. always go for a Named Brand, like Samsung, Lexar, or, my personal favourite, Sandisk.

To cover the confusion over the file systems, FAT12, came out before FAT32, and FAT32 was the 32 bit system, e.g. Windows XP. 

exFAT is for windows 7, 8, 10, or whatever it is that has a touchscreen attatched to it. 
There are three standards for capacity:

SD standard - Up to 2GB SD memory card using FAT 12 and 16 file systems

SDHC standard - over 2GB-32GB SDHC memory card using FAT32 file system

SDXC standard - over 32GB-2TB SDXC memory card using exFAT file system

on Sandisk's MicroSD card, SDXC is also written in RED text on the black Micro SD card. if it is White, it's not 128GB.


Thankyou for reading.
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