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Old 11-26-2009, 01:15 PM   #1 (permalink)
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Default Micro SD card class?

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Looking a amazon for MicroSD cards, they are almost all HDSC, but I also see class 2, class 4, class 6.

What are they refering to with class? What class(s) will work with 8330.
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Old 11-26-2009, 01:30 PM   #2 (permalink)
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Wirelessly posted (8820)

Speed class

http://en.wikipedia.org/wiki/Secure_Digital_card

You are more concerned with the capacity.

http://blackberryfaq.com/index.php/W...n_my_device%3F
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Old 11-26-2009, 02:40 PM   #3 (permalink)
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The speed class has a negligible impact on a BlackBerry. From slowest to fastest, I doubt you'd notice anything>
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Old 11-26-2009, 03:21 PM   #4 (permalink)
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Quote:
Originally Posted by rambo47 View Post
The speed class has a negligible impact on a BlackBerry. From slowest to fastest, I doubt you'd notice anything>
I beg to differ. I purchased a class 2 16 gb card about a year ago, and replaced a class 4, 4 gb card in my 8300. The amount of time it took to copy things to it took about four times as long! I returned the card. Then after finding a class 6 16 gb card, and putting it into the same phone, and copying back the same data, it took much less time, instead of taking 8 hours to copy the data, it took less than an hour. I know this is probably anecdotal evidence, as I didn't take specific measurements, however it was a very noticeable difference in speed.

I also noticed that when I used one of those usb adapters, that the speed was even faster! So there must be something about the blackberry itself that slows things down a bit, but even so, it does seem to make somewhat of a difference with the speed of the card.

-capT

Last edited by captain_tinker : 11-26-2009 at 03:22 PM.
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Old 11-26-2009, 03:37 PM   #5 (permalink)
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the readers are set to a maximum speed or class, you can get a faster card and use it in a device with a slower reader aka use a class 6 card on a class 4 device.

now using the card on a pc whould be running at full speed class 6

the drawback can be load on the device while it can support a class 6 card it wont read/write to it faster then class 4.
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Old 11-26-2009, 06:20 PM   #6 (permalink)
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Wabbit,
Ok, so if I understand correctly, the BB itself is the bottleneck? It is set to read at a certain speed, despite the speed of the card? If that is the case, then makes sense to me. I just know that the class 6 worked a heck of a lot faster than the class 2 while in my phone. I still think it is faster even than the class 4 card I had, but again, can't prove it. I don't have any problem with the class 4, but the class 2 really was just too slow. It even slowed down the read and writes from within the phone itself, like playing media etc. I wouldn't go lower than a class 4 in a BB. You are probably right though, that anything over that may not be a noticeable increase in speed.

-capT
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