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Power Member |
I have a 1 GB memory card in my camera, just a point and shoot Nikkon Coolpix L6, which I used on my trip last September and have been using ever since. I don't reformat it every time I download the pics but then I usually am only downloading about 15 shots. I have reformatted it I think twice. I also have a new 1 GB card which I bought thinking I would need more than 1 (and didn't).
How long do they last? For my trip to Italy, would it be better to start out with the new card and just take the old one as back-up? "The world is a book and those who do not travel read only a page." St. Augustine. |
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Member |
Hi Luvtotravel, I checked Wikipedia which says the following:
Flash memory, regardless of format, supports only a limited number of erase/write cycles before a particular "sector" can no longer be written. Memory specifications generally allow 10,000 to 1,000,000 write cycles. Typically the controller in a CompactFlash attempts to prevent premature wearout of a sector by mapping the writes to various other sectors in the card - a process referred to as wear levelling. So, there is a limit to its usefulness although it may be a long time for casual photo taking. Note the specified range - 10K to 1 million. That is a huge range. |
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Power Member |
Thanks, I think my reformatted card should be good for quite awhile yet, although I may start out with the new one just in case.
"The world is a book and those who do not travel read only a page." St. Augustine. |
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"Frequent Traveller" Power Member |
OK, let's work it out. Suppose you're a very keen photographer and you fill up and reformat your memory card every day. That means that you're going through 1 erase/write cycle per day for each sector on your memory card. That means that the card will last for between 10,000 and 1,000,000 days, or somewhere between 27 and 27,000 years. These are purely "theoretical" limits. In practice, nobody's ever "worn out" a memory card, and nobody's going to do so for a long, long time. Chris |
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Power Member |
...and if they do, it's certainly not going to be me. Thanks Chris, for putting the whole thing in perspective. "The world is a book and those who do not travel read only a page." St. Augustine. |
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