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Which SD Card is better??

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By shaqqq, Senior Member on 12th May 2014, 12:07 AM
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19th May 2014, 11:50 AM |#11  
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Old photos, but illustrates my point,,, 4k random read

http://media.bestofmicro.com/L/I/301...d_4kb_qd_1.png

and most telling of all, , 4k random write

http://media.bestofmicro.com/L/L/301...e_4kb_qd_1.png

So, as i said, for large, contiguous files, like video, a class 10 will run really well, but do something that requires a lot of small, random read write operations, and your class 10 card is gonna feel like it's in mud.
Last edited by samsamuel; 19th May 2014 at 11:54 AM.
 
 
19th May 2014, 12:38 PM |#12  
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Quote:
Originally Posted by samsamuel

Old photos, but illustrates my point,,, 4k random read

http://media.bestofmicro.com/L/I/301...d_4kb_qd_1.png

and most telling of all, , 4k random write

http://media.bestofmicro.com/L/L/301...e_4kb_qd_1.png

So, as i said, for large, contiguous files, like video, a class 10 will run really well, but do something that requires a lot of small, random read write operations, and your class 10 card is gonna feel like it's in mud.

Yeah, I agree. But chances are if you're using an SD card on your phone, most likely its gonna be for videos, movies, obb files for games and other large chunks of data. Rarely these days do you see a file less than 100kb that's not a text file, so when it comes to most people, the higher the SEQUENCIAL R/W speeds, the better.
19th May 2014, 12:51 PM |#13  
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Of course, the target use is the deciding factor, (though i'd possibly disagree with your inclusion of games in the list, since games don't necessarily use large single files to be read sequentially.)

I was just pointing out that the post

Quote:
Originally Posted by D0GuKaN

Higher class means higher read/write performance, ,,,,,

may be misleading and why.
19th May 2014, 01:15 PM |#14  
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Quote:
Originally Posted by samsamuel

Of course, the target use is the deciding factor, (though i'd possibly disagree with your inclusion of games in the list, since games don't necessarily use large single files to be read sequentially.)

I was just pointing out that the post



may be misleading and why.

Just to clarify, when I say games, I was talking about big 3d games, and they have huge texture and map files that are often 10s of mb or even 100s of mb each. Angry birds obviously don't have these, but large games you want to be on the sd card like MC, NFS, NOVA, etc do.
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