Any difference in quality between the A-data, Transcend, and Sandisk
SDHC cards? I've used only Sandisk memory cards to date. Thanks.
Bonnie... that's a tough question to answer.
Memory Cards work a lot like computer RAM chips. If they work, then they are fine. If they don't work, then it's due to some quality problem when they were made. And when you buy a card, and it works fine, you are gung ho about that brand. But someone else might have bought the same card and it was DOA.
And the only way you can tell if a particular card or maker has a quality problem iis to look customer ratings on the various selling sites.
As an example, on another thread someone praised the A-data card they got from Newegg. And someone here mentioned it too. Well, I went to Newegg and looked up the customer ratings for that card and discovered that According to the customer reviews on Newegg, this brand seems to have quality problems:
http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16820211245&SortField=3&SummaryType=0&Pagesize=10&SelectedRating=-1&PurchaseMark=&VideoOnlyMark=False&Page=
It seems the card will work fine, or not work at all. Something like 11 of the 112 customer reviewers said thair cards were DOA! Personally, I would be very leery of a product with that high a failure rate when brand new.
But remember, 101 of those 112 people think the card is great. So you just have to take that information in, and decide for yourself. Naturally, the larger the number to ratings, the more accurate the results will be. And it is the percentage of problems that tends to be more important than the number. 11 problems out of 112 is a lot more significant than 200 problems out of 18,000.
If you go to Amazon.com and look at the customer ratings for the same card, then you find 7 reviews. 6 saying the card is great, and 1 saying it just won't work with their Canon camera.
http://www.amazon.com/review/product/B0010LPBRK/ref=dp_top_cm_cr_acr_txt?%5Fencoding=UTF8&showViewpoints=1
This information actually tends to support the Newegg rating if you look at the percentages. 11 DOAs out of 112 equals a 10% failure rate. 1 out of 7 at Amazon equals a 14% failure rate, but you must remember it is a very small sample.
I suppose having this information is better than not having it, but in both cases the overwelming majority of the customers who bought that card were thrilled with it.
And somewhere there must be someone who bought a Yugo and thought it was a great car.... and even BMW probably builds a lemon every once in a while.
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Marty
http://flickr.com/photos/7735239@N02/sets/72157604030772272/detail/?page=5
Panasonic FZ7, FZ30, LX2