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Hey guys, I ordered my 32GB Prime, super excited about it, and I want add another 32GB memory card but I don't know much about the different classes. Is there a huge difference between them? Thanks for any advice.
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From Wiki:
The Speed Class Rating is the official unit of speed measurement for SD cards. The class number guarantees a minimum write speed as a multiple of 8 Mbit/s (1 MB/s).
Classes
Class 2 - 2 MB/s
Class 4 - 4 MB/s
Class 6 - 6 MB/s
Class 10 - 10 MB/s
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Basically the Class you "need" will depend on the kind of data you will store and how do you plan to use it... For storing and editing plain docs I wouldn't mind having a low class SD, but it would make it harder for your TF to write other files as HD Videos as fast as it should.
More info here:
Wiki Article
Just make sure it's a Sandisk micro SD in my opinion. Their C4 cards tend to be a lot better and more reliable than most peoples C10 cards.
Wonder if the micro SD card slot will handle microSDXC cards? Anyone know?
richB7 said:
Wonder if the micro SD card slot will handle microSDXC cards? Anyone know?
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Would be interesting if it did. But dang, for that much $$ you might as well buy the 64gb Prime...and then some.
RussianMenace said:
Would be interesting if it did. But dang, for that much $$ you might as well buy the 64gb Prime...and then some.
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Well I'm not saying I would buy one of those, the cost is prohibitive, just wondering if it was even an option.
you can get a class 10 for $40-60, so even if the Prime cannot use a class 10, why not buy it to future proof the purchase and then when something comes along that can use a class 10, you have it.
Iam looking for a well rated, 32gb class 10.
Hopefully it will support microSDXC, so when the prices of them start to come down we can extend the memory massively!
Just format the sdxc with a file system the Prime understands. sdxc is just using exFAT. I'd format it with FAT32 or NTFS (if the Prime supports it).
richB7 said:
Wonder if the micro SD card slot will handle microSDXC cards? Anyone know?
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The SDXC card was tested on the TF101. No problems there. I'm pretty sure it will work on the Prime as well.
This article states that SDXC cards will work on the prime.
http://m.ibtimes.com/asus-transformer-prime-vs-ipad-2-au-255223.html
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mau5trap said:
This article states that SDXC cards will work on the prime.
http://m.ibtimes.com/asus-transformer-prime-vs-ipad-2-au-255223.html
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What an horrible article full of wrong facts...
Nobody knows if SDXC will really work but it's almost sure it will.
And why the heck do you guys think the Prime won't support class 10 cards?! Even my old Desire HD supports them with no problems
Wow. That article is full of fail. Its said that the TFP had a 5 Mega pixel camera. I wouldn't trust much in it.
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From what I understand, SDXC just added the exFAT requirement for the for it to be SDXC. From what I originally read awhile ago, sdhc hardware will support 2TB cards. There are a lot of people using the 64GB MicroSDXC and 128GB SDXC in devices at said that they only support SDHC cards. They just formatted them to a file system the device can understand.
Although 99.999999999999999% of the MicroSD Cards which are 32GB are Class 2, I noted that the 16GB which Verizon stocked in the Rezound is a Class 4. I suspect that means we should go no lower than Class 4.
Anyone know of a good and legitimate 32GB SD card which is Class 4 or even better? I note that Class 6 and Class 10 all tend to be brands I have never heard of (other than 1 by PNY).
Recommendations are appreciated.
Sandisk has a class 4 32gb micro on Amazon for $37. I just ordered mine, and it should be here in a few days. I'll let you know what I think of it when it gets here.
Anything faster?
Anyone successfully use a Class 6 or 10 that was NOT a fake and actually worked close to speed?
This is a Class 10 but I don't want to guinea pig it
http://www.amazon.com/PNY-microSDHC-Flash-Memory-P-SDU32G10-EFS2/dp/B005BOMU3K
Someone put in a 64gb, don't know what class, and the RZD formatted it and it worked.
http://forum.xda-developers.com/showthread.php?t=1353148
I asked about class in there and someone said unless you are going to move large amounts of stuff regularly then class 2 or 4 is fine.
feralicious said:
I asked about class in there and someone said unless you are going to move large amounts of stuff regularly then class 2 or 4 is fine.
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Yeah, the only real difference is the transfer time. If you're swapping a lot of data on a daily basis (like copies of your BluRay movies), then a higher class rating makes it go faster, but doesn't have any other effect on the performance of the phone, to my knowledge.
Apsalus said:
Yeah, the only real difference is the transfer time. If you're swapping a lot of data on a daily basis (like copies of your BluRay movies), then a higher class rating makes it go faster, but doesn't have any other effect on the performance of the phone, to my knowledge.
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JD, there's a thread elsewhere on xda that talks about card speeds and basically recommends that the sweet spot is a 32g class 4 card. I have 3 of 'em (all bought at various sales just under $40). One is in my Rezound; one is in my tablet, and one is kept synced to the one in my phone via Microsoft Synctoy....because all cards ultimately fail.
i was reading somehwere that this may affect the speed of how videos write to the card if you save to card..is that true?
i'm gonna get a 32 gig as well, but should i go for class 4 or 6?
hgoldner said:
JD, there's a thread elsewhere on xda that talks about card speeds and basically recommends that the sweet spot is a 32g class 4 card. I have 3 of 'em (all bought at various sales just under $40). One is in my Rezound; one is in my tablet, and one is kept synced to the one in my phone via Microsoft Synctoy....because all cards ultimately fail.
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Do you have an amazon link to the one you found to be the best?
feralicious said:
Someone put in a 64gb, don't know what class, and the RZD formatted it and it worked.
http://forum.xda-developers.com/showthread.php?t=1353148
I asked about class in there and someone said unless you are going to move large amounts of stuff regularly then class 2 or 4 is fine.
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Yeah that 64 GB is a class 6. It's part of Sandisk's new mobile ultra cards. They make em in all sizes I believe.
jayochs said:
i was reading somehwere that this may affect the speed of how videos write to the card if you save to card..is that true?
i'm gonna get a 32 gig as well, but should i go for class 4 or 6?
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That's a valid concern. I don't know the bitrate at which the camera records the various formats that it is capable of, but I'd say that a Class 4 is a safe bet in any case.
For a smartphone doing HD recording you want "atleast" a 4. Anything slower might get stuck in swapping. Personally I think it's one of those things with go with what you can afford/feel comfortable with. Though I'm also using a class 10 16GB since I can't stand being bogged down on transfers. I mean honestly, it's an LTE phone, not an HD camera. I don't need a 32gb, I stream everything.
Play back is a different story, a class 2 32gb works fine as long as the app does proper buffering. Though it will always load faster with a faster SD card.
"Sandisk has a 64GB micro SDHC card out, although its $219."
Ouch. Not cheap.
surfer2.3 said:
"Sandisk has a 64GB micro SDHC card out, although its $219."
Ouch. Not cheap.
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This one works and is a much better price, especially when mom gives it to you for xmas.
http://www.amazon.com/SanDisk-Mobil...510U/ref=sr_1_2?ie=UTF8&qid=1326679568&sr=8-2
Thread about it here:
http://forum.xda-developers.com/showthread.php?t=1353148
Hi guys,
I'm thinking of picking up an SD card for my prime when it comes in. Does anyone have any recommendations as to which class I should get?
I'm thinking 6 or 8 minimum, esp since I will likely end up watching movies (avi, mpg, mkv) off the card. Has anyone tried doing this yet or testing which class SD cards work best?
Gracias
Transcend 16G class 10 works super fast. Love it. My only choice.
And it's not expensive in my region (TW).
I tried a class 4 on my old Advent Vega. When there was no comparion, class 4 seemed ok. But now after a class 10 card experience, I don't think I want to settle for anything less fast.
Looks like Sandisk 32GB Class 4 is what a lot of people are recommending.
Source: http://forum.xda-developers.com/showthread.php?t=1150369
Just received the SanDisk 64 GB microSD Class 6. Getting 7.3-7.5 MByte/s write speeds.
Also have a Samsung 32 GB Class 10, getting 11-12 MByte/s writes.
Write speeds returned on transferring big files (>600 MB) only.
SanDisk comes exFAT formatted so you can put files >4GB on it (very handy for those big mkvs). Samsung comes FAT32, but keeps same high write speeds when formatted exFAT. 64 GB works well with the Prime.
Any way to get rid of the SD card notification in the notifications? Been messing with it for a lil while and can't figure it out...
I have a lexar 32GB class 10...
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beazie0885 said:
Any way to get rid of the SD card notification in the notifications? Been messing with it for a lil while and can't figure it out...
I have a lexar 32GB class 10...
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Probably not until custom roms :-\
Thanks for the replies guys, that tid bit about exfat is golden
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whats the max capacities / speeds on the microSD cardslot? no use getting something that i cant use
If anyone could let me know i would be thankfull
what app are you using to test the read /write speeds? I was using SD tools on my sgs2 but can't get it to work on my prime...
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CrystalDiskMark is real good for testing card speed (from a PC).
After reading a HUGE thread here on XDA about all the classes and how it can vary depending on your need, I opted for a class 4. I was convinced I needed class 10, but after reading that entire huge thread I came to see that for my needs, class 4 was fine and perfect and class 10 of little actual value. So I got a very highly rated Transcend 32gb class 4 off Amazon.
Lock-N-Load said:
After reading a HUGE thread here on XDA about all the classes and how it can vary depending on your need, I opted for a class 4. I was convinced I needed class 10, but after reading that entire huge thread I came to see that for my needs, class 4 was fine and perfect and class 10 of little actual value. So I got a very highly rated Transcend 32gb class 4 off Amazon.
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do you use it for playing mkv's? that's what i would want it for mainly.
Is there anything to be said about what type or make of micro SD card is better or worse for the prime? I remember seeing something about a certain class being better for HD video recording (for the Desire HD).
Just wanted to check / discuss before purchasing
Cheers.
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At least a class 6 I guess like on other devices.
I got a 32GB Patriot Class10 on order. Will let you know how it performs with hidef movies. Hopefully early next week.
Cheers!
for things like recording, or anything that needs to be able to write to the device faster, generally speaking, a higher class should yield better results.
but for general use a class 4 and above should be just fine.
yup, read speeds are generally the same regardless of class.
the "upper class" cards simply have higher "burst" write speed (and also generally at the expense of random write performance).
You can buy a 32gb class 4 from sandisk. It might be a class 4 but quite honestly, it is faster than most other brands class 10.
Okay, I'll go for the SanDisk 32GB I was looking at when I thought of making this thread.
Cheers guys.
SDSDQUA-064G-A11A vs. SDSDQUA-064G-U46A. Both are 64GB. Supposedly, A11A is an American version of the card.
There are a two more issues though.
1. Galaxy Note's compatibility with UHS-I speeds. I heard it's not compatible, and Samsung does not list Note as compatible either. So whether you get a class 6 or class 10 card makes no difference in performance.
2. There's a info on ebay about these cards not working on Android phones after upgrade to ICS. Could anyone confirm this for Note.
oort cloud said:
SDSDQUA-064G-A11A vs. SDSDQUA-064G-U46A. Both are 64GB. Supposedly, A11A is an American version of the card.
There are a two more issues though.
1. Galaxy Note's compatibility with UHS-I speeds. I heard it's not compatible, and Samsung does not list Note as compatible either. So whether you get a class 6 or class 10 card makes no difference in performance.
2. There's a info on ebay about these cards not working on Android phones after upgrade to ICS. Could anyone confirm this for Note.
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64GB Sandisk class 6 working fine on mine no issues?
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Kant Phase Diz said:
64GB Sandisk class 6 working fine on mine no issues?
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Thanks for the info.
oort cloud said:
Thanks for the info.
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Np bud just hit the thanks button
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Kant Phase Diz said:
Np bud just hit the thanks button
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Using a Sandisk 64GB UHS 1 card..never tested speeds, but getting full capacity on UCLF FJ rom so it works good enough for me.
Kant Phase Diz said:
64GB Sandisk class 6 working fine on mine no issues?
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Same. I'm on ICS BTW.
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oort cloud said:
SDSDQUA-064G-A11A vs. SDSDQUA-064G-U46A. Both are 64GB. Supposedly, A11A is an American version of the card.
There are a two more issues though.
1. Galaxy Note's compatibility with UHS-I speeds. I heard it's not compatible, and Samsung does not list Note as compatible either. So whether you get a class 6 or class 10 card makes no difference in performance.
2. There's a info on ebay about these cards not working on Android phones after upgrade to ICS. Could anyone confirm this for Note.
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IIRC there's no such thing as UHS compatibility. Is a rating just like Class X. I suppose your throughput limit could be lower than that of the card, but its both unlikely, and it wouldn't be a compatibility issue. It would just be a bottleneck (still, not a bad bottleneck to have). And SD cards are like controlling girlfriends...they stick with you through multiple states, multiple phone numbers, and you practically have to get a restraining order on em to get em gone.
I've never heard of anyone lifetime writing out a nand device before outside of an enterprise load (ssd)..a 6 year old crappy flash drive, yea....but I think that has more to do with quality, and for the most part, higher speeds (above class 10 speeds) = higher quality.
Have a Class 6 working just fine on my GNote running ICS.
I have both these cards; the class 6 and class 10. Class 6 is designated "mobile" on the card while Class 10 does not say it on the card. Either way, both work perfectly on ICS. Just make sure to let the phone format the drive, not your Window's PC. (FYI, Windows will try to format to NTFS which is not recognizable by our phones. Only FAT32 works).
I google and only fail to identify class 6 and 10 microsdxc card. How to differentiate between those two? What i notice from images there got symbol '1' inside the big 'U'.
deliriousbb said:
I have both these cards; the class 6 and class 10. Class 6 is designated "mobile" on the card while Class 10 does not say it on the card. Either way, both work perfectly on ICS. Just make sure to let the phone format the drive, not your Window's PC. (FYI, Windows will try to format to NTFS which is not recognizable by our phones. Only FAT32 works).
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Have you done any benchmarking on the random write speeds of these? I am curious to know the difference between the class 6 and 10...
SteveG
64 Class 6 been fine since day one in my Note. Class 10 currently on order.
sgogo said:
Have you done any benchmarking on the random write speeds of these? I am curious to know the difference between the class 6 and 10...
SteveG
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Anybody?
Do you know?
sgogo said:
Anybody?
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You do know that each class number relates to the WRITE speed in MB/s. So a class 4 writes at 4MB/sec, Class 6 is 6MB/s and so on and so fourth.
jb0nd38372 said:
You do know that each class number relates to the WRITE speed in MB/s. So a class 4 writes at 4MB/sec, Class 6 is 6MB/s and so on and so fourth.
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Yes, but thats the "sequential" speed. Important for transferring large files or taking hd video.
I am interested in the random write speed... this is more important in normal daily operations.
Some people have claimed that the class 6 is better than the class 10 for random.
SteveG
sgogo said:
Yes, but thats the "sequential" speed. Important for transferring large files or taking hd video.
I am interested in the random write speed... this is more important in normal daily operations.
Some people have claimed that the class 6 is better than the class 10 for random.
SteveG
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Some one will have to run some tests to see the random speeds in the newer sandisk cards
Galaxy Note @ mobile
Speed class is NOT for sequentail write speed, but mor e like a random write speed of certain size of data. For example, Class 10 test 25 random write of 4MB size file. Within the 4MB, it is a sequntial write of 512K or smaller data chunk. Class 10 rating need to garannted for each of the 4MB, the write speed is 10MB/s or above.
Have that said, you can have a SD/uSD card that has 25MB/s+ or more sequential write speed but fail Class 10 test due to mis-align data boundary. (Garbage collection happening). Also, Class speed is only garanteed for a non-aged, newly formatted card. As flash memory wear out, they become slower. Also if there was flamented data in the card prior to speed class type of write, it can be significantly slower than the Class speed rating too.
Now, tt really doesn't means much if what you write to it is music or photos or files, something with a known size before the write happened. Because size is known, the write will almost always be purely sequenctial. When the size of the file is unknown, in in shooting a video, that is where class speed come to play. It is what garrannted minmum write speed, so that incoming data won't get drop.
I got a Ultra 64gb micoHDXC Sandisk in my note, running great. I have about 4 gigs left, lots of movies. Class 10