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Beware of SD Cards without Class Ratings
on January 14, 2013
The SanDisk 2 GB SD card has served me fine, but I am a sophisticated user who purchased this card for a specific purpose with very low performance requirements (mp3 music player). I purchased this as a gift. It matched the intended use.
In general, however, I think most people would be well advised to avoid any memory card which does not carry a speed rating.
This essentially means guaranteed poor performance. Cards like this are sold in places like Walmart to people who think one SD card looks the same as another SC card.
If you intend to use a memory card in any kind of higher performance application like a digital still or video camera, you need to pay attention to class ratings. What does your camera specify? It costs little extra to get the right thing over this generic unrated product. You can bet this is cheap and unrated because the manufacturer could not certify it to any standard and charge a little higher price.
Class 4, Class 6, Class 10... be sure to get at least the minumum required by your equipment. Or, do like me and never buy anything lower than Class 10 for myself. Even if the camera will work with less, the faster speed costs hardly any extra. I wish cars were the same. I'd pay an extra $2 to upgrade to a Porsche, wouldn't you?