Sdhc Class


kaimerra

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I am looking at SDHC 32gb cards to buy for my Pandora. I can't find anything saying a recommendation. How fast will the SD read/write in the Pandora? Is it worth it to get better than a class 4?

http://en.wikipedia.org/wiki/Secure_Digital#Speed_Class_Rating
 
http://www.gp32x.de/board/index.php?/topic/54390-pandora-sdhc-speed-limit/

Just one example of *many* similar threads ;)
 
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kaimerra said:
I am looking at SDHC 32gb cards to buy for my Pandora. I can't find anything saying a recommendation. How fast will the SD read/write in the Pandora? Is it worth it to get better than a class 4?
It depends. I have a kingston 8G class 4 card and for bulk read its propably about as fast as the pandora will go, 16.2 MB/s with a simple dd test (iflag=direct, bs=4M count=64). Writing is a different story.
 
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urjaman said:
kaimerra said:
I am looking at SDHC 32gb cards to buy for my Pandora. I can't find anything saying a recommendation. How fast will the SD read/write in the Pandora? Is it worth it to get better than a class 4?
It depends. I have a kingston 8G class 4 card and for bulk read its propably about as fast as the pandora will go, 16.2 MB/s with a simple dd test (iflag=direct, bs=4M count=64). Writing is a different story.
Got about 16.4 MB/s using the same test on my sandisk 64G card, so I guess that's as fast as the pandora will go. The same card did 18.5 MB/s on another computer.

Writing is another story. This card is class 4 (=4MB/sec). I copied 59GB of files, and it took around 4 hours.
 
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