[Q] Choosing Micro sd card? - Atrix 4G Q&A, Help & Troubleshooting

is there too much difference between class 4 and 10.using my onboard sd as default but planning to buy a 32gb microsd for video&photo.will there be sooo much difference between 4 & 10?10 will worse its price?(sorry for my english)
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If you are transferring data to and from your computer there is a very big difference...
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lonepal said:
is there too much difference between class 4 and 10.using my onboard sd as default but planning to buy a 32gb microsd for video&photo.will there be sooo much difference between 4 & 10?10 will worse its price?(sorry for my english)
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i am not sure where you're from but here in the UK you can get a class 10 card for £25

I live in Turkey.Price is double here.class 4 is nearly 35$,But class 10 is 4's double price.I know data transfer is faster with class 10.but will it slow my atrix down?thinking about that..
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I was using a class 4 sdcard since the phone released up until a few weeks ago. I can honestly say after moving to the following http://www.newegg.com/Product/Product.aspx?Item=N82E16820231577&Tpk=gskill%20class%2010 from a Transcend CL4 I have noticed no difference other than when transferring files, which I do with my PC and a sdcard reader if I am transferring a lot. Overall performance of the phone has proven to be no different in my experience. A benchmark may show a difference, but in real world use on my phone there is none that I have come across.

CaelanT said:
I was using a class 4 sdcard since the phone released up until a few weeks ago. I can honestly say after moving to the following http://www.newegg.com/Product/Product.aspx?Item=N82E16820231577&Tpk=gskill class 10 from a Transcend CL4 I have noticed no difference other than when transferring files, which I do with my PC and a sdcard reader if I am transferring a lot. Overall performance of the phone has proven to be no different in my experience. A benchmark may show a difference, but in real world use on my phone there is none that I have come across.
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Ty for your answer.ı understood there is no big difference except data transfer speed.that was the answer that ı want.
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Related

[Q] SD memory restriction

Is there a reason why the SD port will only accept upto 16GB of memory? To be honest, I do not see myself using more, but I was curious as to why it was limited at 16.
Seems 32GB cards are known to work fine
http://forum.xda-developers.com/showthread.php?t=972892
Thejester001 said:
Is there a reason why the SD port will only accept upto 16GB of memory? To be honest, I do not see myself using more, but I was curious as to why it was limited at 16.
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I have a Kingston class 4 32gb microsd in my Gtab and it works just fine.
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Same here, my 32gb microsd works fine
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Correct MicroSD card format

Does anyone have a SanDisk 64gb class 10 micro sdxc in there s3? I'm trying to determine what's the correct format. The card comes as exfat, so did you just leave it like that and put it in your phone or what? I've seen some people say they have errors and others not have any problems at all. Just post here what your experience is so we can have a good reference.
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Put it in, if it doesn't work you'll have to format it with the phone. My 64GB class 10 gave me issues in my last phone, but none in the gs3.
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brfield said:
Put it in, if it doesn't work you'll have to format it with the phone. My 64GB class 10 gave me issues in my last phone, but none in the gs3.
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Sounds good. Thanks!
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Max write speed to micro sd card

So, I've been reading everywhere here about sizes and different classes. What I'm most interested in is, how fast can the Galaxy S3 write to the sd card, better put the max write speed to the micro sd card? I want the fastest card available, but only if the phone will use it at max speed. Hope someone can give me an answer so I can order one tonight.
thanks for your help
Samsung 32GB Class 10
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nailerr said:
Samsung 32GB Class 10
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so I guess there is no point in ordering something that is faster than a class 10, aww shucks :'(
I believe class 10 is the current fastest. I bought it since it was not too expensive at the time..
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what does it benchmark outside the galaxy s3? Is it the same or higher?
SanDisk 64 GB Class 10
Can't help you there, sorry. I suppose it would not be vastly different though.
Sammy claim 24 read and 13 write. But file system overhead etc is perhaps not being accounted for. As it is though, records video fine and otherwise gives me no problems..
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Sandisk 16GB class 10 UHS-1 on my s3 I got
Writing speed 15.08 MB/s
Reading speed 33.37 MB/s
what did you get off your galaxy s3 ablacklist?
This time I got :
Writing speed 18.46 MB/s
Reading speed 26.89 MB/s
I used SD card tester app to check my speed.
Kernel : syiah 1.4
Rom : omega v10
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ablacklist said:
This time I got :
Writing speed 18.46 MB/s
Reading speed 26.89 MB/s
I used SD card tester app to check my speed.
Kernel : syiah 1.4
Rom : omega v10
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thats internal storage, not external.
change path and then test
hey ablacklist, I meant to say before what are the speeds on that card when plugged directly to your computer? How much was it and where?
Daanlt said:
thats internal storage, not external.
change path and then test
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Oh thx man... you are right....my bad..
gjllopez said:
hey ablacklist, I meant to say before what are the speeds on that card when plugged directly to your computer? How much was it and where?
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I haven't test it on my PC yet, tonight I will give it a go and post it.
and Here is the real result with the right path for sandisk 16GB class 10 UHS-1
Writting speed 10.77 MB/s
Reading speed 17.92 MB/s
ablacklist said:
Oh thx man... you are right....my bad..
I haven't test it on my PC yet, tonight I will give it a go and post it.
and Here is the real result with the right path for sandisk 16GB class 10 UHS-1
Writting speed 10.77 MB/s
Reading speed 17.92 MB/s
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Thanks look forward to reading it. I have yet to see someone post greater than 11mb/s. bummer
Samsung 32gb class 10
SanDisk 16Gb class 6 ultra speed...
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write 27mb/s
read 33mb/s
Whats the best Cluster size for SanDisk 64gb class 10?
With latest stockrom blg8
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gjllopez said:
Thanks look forward to reading it. I have yet to see someone post greater than 11mb/s. bummer
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I tested on Sony vaio laptop that come with Ricoh PCIe memory slot, I got:
Write speed : 11.40 MB/s
Read speed : 22.77 MB/s
and based on previous result on s3 (W: 10.77 MB/s R: 17.92 MB/s) , the difference are:
Write speed difference : 0.63 MB/s
Read speed difference : 4.85 MB/s
@Sandisk 16GB class 10 UHS-1
gjllopez said:
So, I've been reading everywhere here about sizes and different classes. What I'm most interested in is, how fast can the Galaxy S3 write to the sd card, better put the max write speed to the micro sd card? I want the fastest card available, but only if the phone will use it at max speed. Hope someone can give me an answer so I can order one tonight.
thanks for your help
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Click to collapse
Run that same "sd card tester" app on the internal memory. That should be representative of how fast it "can" be +/-
hope that helps,
-CC
EDIT: Example in post #10 of the test done on the internal memory, which in theory should be close to max capabilities; http://forum.xda-developers.com/showpost.php?p=29525785&postcount=10
EDIT2: I've attached my internal memory test (UBLF2 stock + root) and my Sandisk 64GB Class 10 / UHS 1 sd card tested in the SGS3 (stock format as it came out of the package)

Does sd card effects the performance of the phone??????

Hi guys I'm planning to buy an 32gb class 10 sd card and want 2 know that does this effect the performance of the phone in any way ?????????
And any suggestions for the best sd card????????
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No, if have maybe minimum effects
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Hi.. before i was using a cheap sdcard on my i9000 and i9100 and it did caused some lag.. hope this helps
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It affects the performance this much |_| ...you decide.
Your card might be a class whatever. The output of:
/sys/devices/virtual/bdi/179:0/read_ahead_kb
and
/sys/devices/virtual/bdi/179:16/read_ahead_kb
affect the read ahead performance however. The card by itself is a load of old ****.
Ignore the people who have bought themselves a big waste of money.
Huge difference. Stupid serial access synthetic benchmarks as detailed above are of no relevance. Of course faster access medium is better. Like the difference between an HD and an ssd. Anyone saying otherwise has no idea what they are talking about.
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Dr.Paul said:
Huge difference.
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Balls.
Proof of any measurable positive impact on an SIII from such a card? Not waffle... proof.
Good luck with that. I have a 32Gb Class 10... no difference whatsoever from a poxy class 2 2Gb card.
nobnut said:
Balls.
Proof? Not waffle... proof.
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Don't be ridiculous. Why not go on and argue that a 2mhz processor is just as good as a 1.4ghz quad core one? Simple logic and a very minor understanding of science will confirm it.
I edited my post as you were posting...
Where is your proof though
I'm not holding my breath though.
nobnut said:
Balls.
Proof of any measurable positive impact on an SIII from such a card? Not waffle... proof.
Good luck with that. I have a 32Gb Class 10... no difference whatsoever from a poxy class 2 2Gb card.
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Rubbish. Of course a class 2 card is slower than a class 10. Proof? Look at any benchmark or try it yourself. Your argument is akin to arguing that a car with a top speed of 100mph and 0 to 60 of 20 seconds is just as fast as one with a top speed of 200mph and a 0 to 60 of 5 seconds. Get a grip. God there are some muppets on this forum....
It was to my understanding that a class 2 means that it will at least write at 2MB/s. It is by all means not limited to 2MB/s. Am I wrong?
jazdevi said:
It was to my understanding that a class 2 means that it will at least write at 2MB/s. It is by all means not limited to 2MB/s. Am I wrong?
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The card doesn't control the read-write rate. The ROM does.
You are correct though. Example: A Lamborghini will do, let's say 180 mph... but the driver may never go above 50.
EDIT: I'm looking forward to seeing Dr Pepper's stats and data though.
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Are we talking about the speed of the card or how the speed of the card effects the phone performance?
2 completely different subjects
Are we talking about the speed of the card or how the speed of the card effects the phone performance?
2 completely different subjects
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Exactly!
The thread is about the latter, that's what I am talking about. I've no idea what Dr Zeus is on about though.
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Anything above class 4 is a waste of money for me. (class 4 is sufficient for HD recording.)
So in between this argument what do u guys think what should i do should i go for class 2 card or a class 10 ????????
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It doesnt affect the performance because all if the phones data is stored in its internal Card which is much faster than any external card
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sohail77 said:
So in between this argument what do u guys think what should i do should i go for class 2 card or a class 10 ????????
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See.. Cards performance will only be affected if you store game Data on the extsdcard.. Even then class 4 would be good enough.. If you don't want to buy class 10 buy a class 4 sdcard.. You won't notice any major speed differences
Sent from someone in the Milky Way
If you're recording hd video onto your card then you'll be better off with a class 10. Other than that, it won't affect the performance of your phone at all if you get a slower card.
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zoot1 said:
See.. Cards performance will only be affected if you store game Data on the extsdcard.. Even then class 4 would be good enough.. If you don't want to buy class 10 buy a class 4 sdcard.. You won't notice any major speed differences
Sent from someone in the Milky Way
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And tranfer files from sdcard to microsd.
Enviado de uma GalaxyaS3 far far away
I've had lags+stutters while recording video at 1080 and superfine quality directly to my class 6 SD card. Those videos were quite long (10-15 min).
Changing storage location to phone memory removes all the lags. I'm planning to change mine to class 10 soon.
Other than this, I don't see any real performance issue with lower class sd card; at least for me anyway.

SD card class

How do you tell card class? What is the class of card that came with the Thunderbolt 32 gigabytes?
They usually have the class printed on them. Classes are 2, 4, 6, 8, 10, and UHS1 (SDXC). Most cards that come with phones are class 2 or 4. The number is usually printed in a circle.
blackbass595 said:
How do you tell card class? What is the class of card that came with the Thunderbolt 32 gigabytes?
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Nothing like this uhs-1 64 gig in my note 2
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Admiral2145 said:
Nothing like this uhs-1 64 gig in my note 2
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x2!
Hi,
Any advantage to using a higher class on the note 2.
Thanks,
Bryan
trapperjohn said:
Hi,
Any advantage to using a higher class on the note 2.
Thanks,
Bryan
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The class refers to the minimum sustained read/write speed the card is capable of. So a class 2 card can handle 2 MB/sec or higher read and write, Class 4 is 4 MB/sec, and so on. You could get a class 2 card that is capable of class 10 speeds, but there are no guarantees of it. The faster speeds will be good when something is reading/writing data to/from the SD card, think Gallery and Camera being the two big ones. It would be able to load pictures faster for gallery, and save the faster when taking them with the camera.
If it isn't printed on the card, move files to and from with windows and note you're Transfer speeds
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