Testing SD cards.
Mar 6, 2021 17:04:20 #
R.G. wrote:
That's not a confirmation of authenticity or an indicator of reliability. Nobody's saying that all SD cards are suspect, and there are probably several reasons why fake cards are in the system (fake returns being another problem that's closer to home), but if I was doing business with a Chinese company I'd want to keep a close eye on them. Apparently most fake goods originate in Asia (not specifically China).
Most electronic devices are manufactured in Asia, fake or not. Particularly items made in mass quantities for the consumer market, such as SD cards. Like it or not, that's where all the factories are! Besides - if it is indeed fake, what's to stop the manufacturer from imprinting whatever "Made in..." on the product it wants to?
There's really no effective way to keep an eye on Chinese companies directly. However, one could keep close watch on the (domestic) importer in order to ensure that they are using only legitimate suppliers - importing either from the manufacturer directly or a supplier verified by the manufacturer, not some third party supplier with unconfirmed ties to the legitimate manufacturer.
Mar 6, 2021 17:15:10 #
TriX wrote:
.....Any benchmark without defining the file size is essentially meaningless.
I don't think h2testw was designed to be a benchmark-level measurer of performance. What it does do is give a quick indication as to whether a card is seriously under-performing.
I also think it's widely recognised that there are several factors affecting data transfer speeds, so much so that any attempt to give an average or typical value would be meaningless. The alternatives for the manufacturers are to give either a top speed or a guaranteed minimum speed. They choose to give the top speed because it makes their product look good. The guaranteed minimum speed (the V rating) is probably potentially more useful when it comes to determining whether a card will perform sufficiently well, but it's not as impressive as the top speed rating.
Mar 6, 2021 17:21:37 #
rook2c4 wrote:
...one could keep close watch on the (domestic) importer in order to ensure that they are using only legitimate suppliers - importing either from the manufacturer directly or a supplier verified by the manufacturer, not some third party supplier with unconfirmed ties to the legitimate manufacturer.
I think the large retail outlets do buy direct from the manufacturer, which eliminates any uncertainty by eliminating the middle men. Mail order is another story.
Mar 6, 2021 17:24:12 #
bdk wrote:
my internet speed isn't whats advertised, my cars MPG isnt whats advertised and now my cards are not whats advertised. I am afraid to check mine.
If any of your cards fall seriously short of what they should be capable of, they will probably be slowing your camera down.
Mar 6, 2021 18:26:11 #
R.G. wrote:
I'm left wondering if "Made in China" might be an indicator of questionable authenticity.
Why are you wondering?
Mar 6, 2021 19:08:14 #
hj
Loc: Florida
rgrenaderphoto wrote:
Never, ever purchase memory cards via Amazon, their listings are full of fakes and crappy products. Whoever made your SD card was probably the same factory that makes SanDisk's products. Who is to know that an extra 100,000 SD card labels were printed?
I only purchase memory at major retailers like Best Buy or dependable camera stores like Samys, B&H or vendors directly like Delkin.
I only purchase memory at major retailers like Best Buy or dependable camera stores like Samys, B&H or vendors directly like Delkin.
I don't understand. If the extra SD cards were made by the same factory.... what's the problem?
Mar 6, 2021 19:43:56 #
hj wrote:
I don't understand. If the extra SD cards were made by the same factory.... what's the problem?
Because if you get a bad card, or a card with a smaller capacity than its label indicates (surprise, ... vendors that lie, cheat & steal have multiple ways to do that), you will have no recourse with the "official" manufacturer. They will know that those cards are not theirs, so no warranty for you. Happens all the time, read the reviews on Amazon to see.
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