SD Card Classes - Xperia Z Q&A, Help & Troubleshooting

Hi
1.
SD card class 2 works on smartphones like XZ
but is thr any bad effect on phone with low class of sd card?
2.
sd card class 16 ?!?!
is class 16 available?

looks like searching the internet has became so hard these days
https://www.sdcard.org/developers/overview/speed_class/
http://sdcard-speed-guide.articles.r-tt.com/

indycar said:
looks like searching the internet has became so hard these days
https://www.sdcard.org/developers/overview/speed_class/
http://sdcard-speed-guide.articles.r-tt.com/
Click to expand...
Click to collapse
yeah thanks for link
But cause i didn find some topic directly talk about my question i made this thread.
Is There ANY BAD Effect on smartphone because of class of Sd card?
for example some sites recommend class 10 for smartphones but is that mean class 2 will effect badly?

If the speed of the card is too slow when you try to film in full HD you will see.
Sent from my C6603 using xda premium

slower card means slower read/write speeds which affect your photo shooting/video recording, opening apps, etc.
if u put slow sped sd card in nothing will be wrong just things on it will run a bit slower

x102x96x said:
yeah thanks for link
But cause i didn find some topic directly talk about my question i made this thread.
Is There ANY BAD Effect on smartphone because of class of Sd card?
for example some sites recommend class 10 for smartphones but is that mean class 2 will effect badly?
Click to expand...
Click to collapse
When moving files to that class 2 card will be slow, reading files from a class 2 card could lag.
Class 2 minimum of 2MB/s
Class 4 minimum of 4MB/s
Class 6 minimum of 6MB/s
Class 10 minimum of 10MB/s
These are the standards for SD, many cards will perform well above this in the same Class, but after fragmentation etc they have to obviously at least provide the minimum or above to be classified in that class rating.
I don't believe that any card exist's above class 10, although companies may claim the speed LIKE Class 16...(which would be minimum of 16MB/s. My card is Class 10 UHS-1 (Ultra High Speed) which performs up to 95MB/s

thanks
i got my answer and bought class 10 sd card for my xz

Related

[Q] About SD Card

Hello
I got my Legend about 2 months ago, and I have a big problem with storage space...
What is the biggest sized SD card the Legend can use?
What is the type of SD card (micro, mini, etc...)
What is SD card class?
Thank you very much
microSD compliant with SD2.0 Standard (aka microSDHC)
The biggest size available currently is 32GB.
I don't know if even more is possible with microSDHC or if bigger cards will only be possible with SD3.0 (aka SDXC) but that question is not relevant as you can't buy any greater then 32GB yet.
The Class of the SDCard is a measurement for guaranteed minimum speed in random read/write.
The Class does not provide any information about real-world speed or max speed.
For your mobile phone the class is a pretty useless criterion as you don't need any guaranteed minimum speeds but good overall speeds ESPECIALLY sequential.
The guaranteed minimum speed is important for HD Video Cameras for example where you write data all the time at a given speed (resolution).
thanks.
but I DO need class with high speed because I want to use Data2Ext...
Don't pick uSD card based on class !! class tels you MB/s for sequential write only... you need a card that is overall fast, I had 16GB class 10 Kingston and data2ext was just horrible!
Now I'm with class 4 Sandisk mobile ultra and it is in fact faster in every test I ran...
So read reviews before you buy
ye but that is exactly why im asking...
well then, I recommend sandisk mobile ultra as I have it and it is OK, there are probably faster cards...just see the small files read / write speeds in reviews those are of greatest importance
i purchased a kingston 8GB class 4 which crapped out. android kept reported sdcard unexpectedly removed. tried all sorts (formatting in windows, android, quick, long, etc).
RMA replacement did exactly the same, so i'm guessing kingston class 4's are best avoided.
If I recall correctly I have a 16GB microSDHC Class 4 card. After applying data2ext with this card, my Quadrant scores hit around 1500, which is crazy.
This is where I found my card: http://www.amazon.co.uk/SanDisk-16G...P06K/ref=sr_1_1?ie=UTF8&qid=1298984123&sr=8-1
I personally recommend this card.
witch is better class 4 or class 6?
r69001 said:
Hello
I got my Legend about 2 months ago, and I have a big problem with storage space...
What is the biggest sized SD card the Legend can use?
What is the type of SD card (micro, mini, etc...)
What is SD card class?
Thank you very much
Click to expand...
Click to collapse
Did you by any chance go to HTC's website to read about the phone? It has the full specs listed..
Sent from my Legend using XDA App
dangal said:
witch is better class 4 or class 6?
Click to expand...
Click to collapse
class 6 is better , but class 10 is even better
I've got a Sandisk Ultra Mobile 16gb SDHC which works fine in the Legend. Make sure you format it with the phone to stop it being dismounted, well known issue and the fix

[Q] Minimum micro SD class for the galaxy note

Hi guys, I am about to purchase my galaxy note next week and I was wondering if anyone could shed some light into the matter..
Which class of micro sd card should I buy? (minimum) I was hoping to get a 64gb but if that would underperform, there would not be much of a sense to it.
The maximum reading/writing I will be doing in the note is probably playing 1080p playback + mirroring it to the tv. maybe some hi definition video recording as well straight to the memory card.. but most often than not, I would play a 720p mkv movie.
Would a class 4 suffice? Any suggestions on which brands I should look at / stay away from?
Class 4 of any decent brand should suffice.
Class 2 cards from Sandisk will also suffice (their read/write speeds are enough for 1080p encoding and decoding). May be a hassle if you regularly transfer a lot of data to and from the card since thats the time when the slower R/W speeds will come into play.
Why get anything less than class 10? If you can afford a Note, you should be able to spare another $20 for a fast sdcard...
class 10 cards can cost upwards of $80 for an 8gig card.
keithleyson said:
class 10 cards can cost upwards of $80 for an 8gig card.
Click to expand...
Click to collapse
i picked up my class 10 a-ram 32gb microsd for $49.95AU + shipping.
it really depends on what you plan to use your note for. if youre filming 1080p video at the default 17mbps, thats about 2mb/s that you'd want minimum for just filming. so any speed should be fine as long as its above class 2. i just prefer faster cards since theyre getting cheaper.
Souai said:
i picked up my class 10 a-ram 32gb microsd for $49.95AU + shipping.
it really depends on what you plan to use your note for. if youre filming 1080p video at the default 17mbps, thats about 2mb/s that you'd want minimum for just filming. so any speed should be fine as long as its above class 2. i just prefer faster cards since theyre getting cheaper.
Click to expand...
Click to collapse
Where did you get it from? Does it even have a brand?
RashaMatt said:
Why get anything less than class 10? If you can afford a Note, you should be able to spare another $20 for a fast sdcard...
Click to expand...
Click to collapse
I've read class 10 doesn't always mean fastest read speed or something to that effect. Not always beneficial to get a class 10 since it writes faster but doesn't always means it reads faster. Someone else can probably elaborate for me.
DMax99 said:
Where did you get it from? Does it even have a brand?
Click to expand...
Click to collapse
A-RAM is the brand. i bench'd it. write speeds are 11mb/s, read speeds are 14mb/s.
it was one of the random daily specials they had at www.shoppingsquare.com.au a week or so ago.
right now, the next best deal they have is http://www.shoppingsquare.com.au/p_276323_Kingston_32GB_Class_10_Micro_SDHC_Memory_Card
phungn said:
I've read class 10 doesn't always mean fastest read speed or something to that effect. Not always beneficial to get a class 10 since it writes faster but doesn't always means it reads faster. Someone else can probably elaborate for me.
Click to expand...
Click to collapse
normally read speeds of class 10 are still higher than write speeds. but the read speeds dont really vary much between classes. my kingston class 10 reads at 12mb/s, my a-ram class 10 reads at 14mb/s, my sandisk class 2 reads at 10mb/s. so if all you need is read speed, then any card will do.
even class 2 or 4 on Sandisk it will work fine. i believe just buy a good make one ( not a fake from China ) , but i bought mine Lexar class 10 and work great , i couldnt be happier.
phungn said:
I've read class 10 doesn't always mean fastest read speed or something to that effect. Not always beneficial to get a class 10 since it writes faster but doesn't always means it reads faster. Someone else can probably elaborate for me.
Click to expand...
Click to collapse
It doesn't necessarily write faster either!
All the class indicates is the minimum sustained write speed under optimal (i.e. unfragmented) conditions. It says nothing about the read speed, which is what is generally important in mobile devices since they are usually used for content consumption rather than creation.
As NZtechfreak has already mentioned, Sandisk Class 2 cards almost always well exceed the class minimums - I've been using 16gb Sandisk Class 2 cards in my phones for a long time now, and I've yet to get one that had a write speed less than the Class 6 minimum of 6MB/s, and the read speed has always been 20MB/s or above.
Regards,
Dave
A good read why Class 4 cards are the best ones to use for your smartphone: http://forum.xda-developers.com/showpost.php?p=14456360&postcount=42
I started out with a Kingston Class 2 32GB I had laying around, and then switched to a Class 10 32GB made by PNY that I got from Microcenter for $59.95.
There was a very noticeable difference in photo taking lag and the media scanner, plus app access on the card. Now there is almost no photo lag, from snap to saving. Haven't messed with the video much yet...
I've Samsung class 10 32 gb. It's really good, but my device started rebooting because of it. "System Process has stopped working."
What I found out is that after removing my micro sd my device is a hell FASTER than before!!!
Maybe a faulty micro sd, no since it works fine in my pc and other devices.
I want to check does any of you have the same problem???
Sorry but your data is at least a year old
Samsung 16GB class 10 card plus adapter at Amazon for $15-$20... mine arrived yesterday
keithleyson said:
class 10 cards can cost upwards of $80 for an 8gig card.
Click to expand...
Click to collapse
Mystic38 said:
Sorry but your data is at least a year old
Samsung 16GB class 10 card plus adapter at Amazon for $15-$20... mine arrived yesterday
Click to expand...
Click to collapse
Errhh, more like your post is 5 months late!
Regards,
Dave
Moved To Q&A​
Please post all questions in the Q&A section​

Micro SD Class 2 or 4?

I had a Galaxy Ace wich I upgraded to my new Optimus Black. I bought a 8 GB Class 2 micro SD, OB came with 4 GB Class 4 micro SD. Would i feel the difference between both of 'em if i user 8gb class 2 again? I think i need more data storage
Not using a2sd or anything like that.
higher class = higher write/read speed
plus,if you like customize your rom, it's better if you have a >=6 class sd card
class 10 please , i have samsung 8gb class 10 and it`s not a big difference in price between 6 and 10
i got a 16GB class 10 from amazon for about 20€
Samsung MicroSD
Samsung MicroSD #2
agent205 said:
higher class = higher write/read speed
Click to expand...
Click to collapse
No. Higher class = higher minimum write/read speed.
You can try get a legendary Class 10 Micro SD with more than 8GB
Belive me, it will be your best upgrade purchase for the OB
Actually I have a Micro SD Adata Class 10 16GB. On my daily usage, I noticed better performance from games that requiere SD data storage and better speed for tranfer files via usb. On my experience, 1GB in 1:30min!!! Well that's when i'm transfer a unique .rar file, if you try with a folder of same size it takes a little more time
Another thing, if you're a gamer, trust me... you must get a 16Gb micro SD at least, because the heavy graphics games (like newest Gameloft Games) have very heavy quantity of data. Only with the downloadable data of Nova2, Asphalth 6, MC3, Street Fighter IV, FIFA12 and Real Racing2 you fill a MicroSD 8GB!!! D: but they are very good games ;D
Well, I hope this info will help you and if I was on your shoes... I hurt you!!! XD jajaja just kindding but seriously think about grab a better SD class with more than 8Gb ok... well you have the better choice. Regards from Mexico
PD. Sorry about my bad English T-T
defintely use higher class (min. class 6)... you will gain a benefit when loading/copying large amount of data. agree with above.
Class - Speed
2 - 2 MB/s
4 - 4 MB/s
6 - 6 MB/s
10- 10 MB/s
SourDieselTHC said:
Class - Speed
2 - 2 MB/s
4 - 4 MB/s
6 - 6 MB/s
10- 10 MB/s
Click to expand...
Click to collapse
Those are the minimum speeds, the class doesn't say anything about maximum speeds. It is possible for a lower class card to reach higher speeds than a higher class card. It should not be possible for a card of a given class to go slower than the class minimum.
I had the common lag in camera recording...when I changed to samsung 32GB class 10 all went fine , that was still in froyo. I got it for only 27€ in an spanish online shop called "pccomponentes".
Great deal..3 months so far and all running well.
The Classes are the speed to write on SD, If You have a class 4 is better than 2, but maybe is more expensive.
sarremiro said:
I had a Galaxy Ace wich I upgraded to my new Optimus Black. I bought a 8 GB Class 2 micro SD, OB came with 4 GB Class 4 micro SD. Would i feel the difference between both of 'em if i user 8gb class 2 again? I think i need more data storage
Click to expand...
Click to collapse
It's a good dilema, space vs speed. As others have said if you are a gamer go for speed. If you just have music a pictures on your SD and are patient then go for size.
I got a 8GB with 10class and my phone "fly".
kingmax - price 10€
Yeah, I suggest too to choose a class 10 if you are a gamer, a lower class if you're not.
But I don't suggest you to use a SD wich is less than class 4. Class 4 for in my opinion is the lower class to consider, others are too slow even for photos. Your device may suffer of this (be very slow)

[Q] Memory card for galaxy note

I want to buy a 32gb memory card for my galaxy note. I want to know which class memory card should I buy. I am getting 32gb sandisk class4 card @1.9k and 32gb sandisk class 6 @3.9k. What benefits will i get with a class 6 card. please help !!!
You'll just be able to dump content faster to the card with a higher class.
by class 6 you must mean the new sandisk ultra series (red color cards).
if you gonna use your card mainly for storing apps and other such random access stuff go for class 2/4.
if its for HD video recording, large file transfers, etc (sequential read/write) go for class 6/10.
btw, for HD video playback even class 2/4 is sufficient. although there is an advantage for HD recording when going for higher classes.
also, if you meant the class 6 sandisk ultra, most of the reviews as well as users say that its much faster than most of the class 10 disks in the market, including class 10 sandisks.
anjath said:
by class 6 you must mean the new sandisk ultra series (red color cards).
if you gonna use your card mainly for storing apps and other such random access stuff go for class 2/4.
if its for HD video recording, large file transfers, etc (sequential read/write) go for class 6/10.
btw, for HD video playback even class 2/4 is sufficient. although there is an advantage for HD recording when going for higher classes.
also, if you meant the class 6 sandisk ultra, most of the reviews as well as users say that its much faster than most of the class 10 disks in the market, including class 10 sandisks.
Click to expand...
Click to collapse
Thanks for ur reply. Yes the class 6 card is the Red Mobile Ultra one. I wanted to know what kind of problems I may face with a class 4 card while 1080P video recording and is class 6 really worth almost double the price?
I went for a class 10 and it seems alright. Not overly impressed with the speeds though. But no issues with HD recording.
Sent from my GT-N7000 using XDA App
If you are shooting 720p or higher videos with lower class, you may experience stuttering in the video as the card isn't rated for high throughput data transfers. I'm not saying that it will happen every time, but that is the reason you should go for higher class cards if that is your main purpose. Higher class cards have higher sequential write speeds, which is what you need for saving pictures more quickly and for recording HD video. Lower class cards have much higher random access speeds, which are needed for someone who uses lots of apps.
so if you store all apps internally and keep the external card only for multimedia, you could blindly go for class 6/10. you get very fast data transfers also (PC to Note).
this class 6 mobile ultra is very new. it could actually be a good compromise between class 4 and 10. but don't worry too much. just stick to sandisk
you can also check this one. looks good and priced well for a class 10.
http://www.flipkart.com/strontium-m...Tg--&ref=78d90fd5-7d25-417d-bd7d-6281ed2c1eeb
have a read of this paper http://static.usenix.org/events/fast12/tech/full_papers/Kim.pdf and see what card suits your needs
ankydu said:
Thanks for ur reply. Yes the class 6 card is the Red Mobile Ultra one. I wanted to know what kind of problems I may face with a class 4 card while 1080P video recording and is class 6 really worth almost double the price?
Click to expand...
Click to collapse
imho class 4 is enough for u to store mkv video file, it's for me.
Guyz I have decided for Sandisk class 6 card. But now the problem is as I see. sandisk 32gb class 6 @ 50$ and sandisk 64gb class 6 @ 111$. Out of these 2 which one do you recommend. THanks in advance !!!
If you can afford it then obviously the 64GB is better, but i would get a UHS-I if i were you.
Sent from my superior GT-N7000 using Tapatalk
I got the samsung 32g class 10 for 40. It's cool.
anjath said:
If you are shooting 720p or higher videos with lower class, you may experience stuttering in the video as the card isn't rated for high throughput data transfers. I'm not saying that it will happen every time, but that is the reason you should go for higher class cards if that is your main purpose. Higher class cards have higher sequential write speeds, which is what you need for saving pictures more quickly and for recording HD video. Lower class cards have much higher random access speeds, which are needed for someone who uses lots of apps.
so if you store all apps internally and keep the external card only for multimedia, you could blindly go for class 6/10. you get very fast data transfers also (PC to Note).
this class 6 mobile ultra is very new. it could actually be a good compromise between class 4 and 10. but don't worry too much. just stick to sandisk
you can also check this one. looks good and priced well for a class 10.
http://www.flipkart.com/strontium-m...Tg--&ref=78d90fd5-7d25-417d-bd7d-6281ed2c1eeb
Click to expand...
Click to collapse
Haven't got my Note yet, my question is regarding internal memory vs lower class external interm of speed as you said lower class will have stuttering and slow in saving pictures. What if I use my internal storage as the main temporary storage for taking HD video and picture, would it stutter like you mention?
Then when I'm done recording, I just transfer the recorded HD video to my external card. Would that make scene?
I want to use my internal memory as a temporary storage and will move my data to external card when doing house keeping. Would clearing internal storage enhance overall phone speed performance?

Best sd card....

I read somewhere that class 6 card is better than class 10 for smartphones? Is it true? I was planning to buy class 10 transend or sandisk 32 gb sd card. Should I ? Anybody...
Sent from my LG-P970 using xda premium
Sent from my LG-P970 using xda premium
ramola said:
I read somewhere that class 6 card is better than class 10 for smartphones? Is it true? I was planning to buy class 10 transend or sandisk 32 gb sd card. Should I ? Anybody...
Click to expand...
Click to collapse
The general consensus is that Class 10 is great for what it's intended for: transferring or saving LARGE media files (recording videos or taking high-resolution digital photos).
The lower classes seem to perform better with smaller file transfers.
I have a Class 4 Sandisk 8MB card in my P970, and I'm very happy with the performance. I doubt I'd see a performance increase moving to Class 10.
androcraze said:
The general consensus is that Class 10 is great for what it's intended for: transferring or saving LARGE media files (recording videos or taking high-resolution digital photos).
The lower classes seem to perform better with smaller file transfers.
I have a Class 4 Sandisk 8MB card in my P970, and I'm very happy with the performance. I doubt I'd see a performance increase moving to Class 10.
Click to expand...
Click to collapse
i think you mean 8GB?
i have a Class 10 Samsung micro SD-Card with a space of 32GB
The difference between Class 4 and 10 is that C4 has 4MB/s write speed and class 10 10 MB/s write speed.
I would always choose a class 10. they are not so expensive and are more than twice as fast as Class 4
Samsung Class 10 SD-Card
ramola said:
I read somewhere that class 6 card is better than class 10 for smartphones? Is it true? I was planning to buy class 10 transend or sandisk 32 gb sd card. Should I ? Anybody...
Click to expand...
Click to collapse
Here's an interesting link comparing different classes:
http://forum.xda-developers.com/showthread.php?t=1150369
I have read that manufacturers have recently improved random read/write speeds on class 10 cards. Dunno. Biggest thing I see is that brand almost matters as much as class. I'd stick with Sandisk.
Enjoy, and good luck.

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