Database Develop

[Q] MicroSD cards

So where are the good deals on MicroSD cards? I'm interested in at least Class4. What are you using with your GTabs?

I was wanting to hold out for a class 4 or better 32gb, but I don't think the included 16gb is going to last me much longer on it's own.
I have a class 6 8gb transcend card for backup that seems to read and write very well on the tab.
I usually just use google search and click on shopping to find good prices since they change constantly.

Thanks for the advice, I did see that shopping.google.com was probably the best way to find good deals.
Does anyone have any experience using a class 10 microSD in their GTab?

What are the differences between 4,6,8,10 sd class cards

haythams said:
What are the differences between 4,6,8,10 sd class cards
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http://en.wikipedia.org/wiki/Secure_Digital#Speeds
Speed Class Rating
The Speed Class Rating is the official unit of speed measurement for SD Cards, defined by the SD Association. The Class number represents a multiple of 8 Mbit/s (1 MB/s), and it measures the minimum sustained write speeds for a card in a fragmented state.[11]
The following are the ratings of some currently available cards:[11]
Class 0 - These cards do not specify performance, which includes all legacy cards prior to class specifications.
Class 2 - Minimum of 2 MB/s performance. Lowest speed for SDHC cards.
Class 4 - Minimum of 4 MB/s performance.
Class 6 - Minimum of 6 MB/s performance.
Class 10 - Minimum of 10 MB/s performance.

Keep in mind that the class is based off WRITE speeds. I have a class 10 in my Vibrant, but only a class 2 in my Tab. That is because I tend to change what I carry on my phone more often than my tablet and thus it is noticeable. But if you are just going to load up 4 gigs of music and 8 gigs of movies and never change it, go with a cheap card.

Shane_pcs said:
Keep in mind that the class is based off WRITE speeds. I have a class 10 in my Vibrant, but only a class 2 in my Tab. That is because I tend to change what I carry on my phone more often than my tablet and thus it is noticeable. But if you are just going to load up 4 gigs of music and 8 gigs of movies and never change it, go with a cheap card.
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http://www.newegg.com/Product/Product.aspx?Item=N82E16820208475
I just ordered a 16GB class 6 for my Tablet. I'll probably be swapping out movies on a semi-regular basis, so didn't want to get just a class2.

Got a class 4 32GB from NewEgg. Works quite well and exceeds the rated transfer speed most of the time.

I'm using the Sandisk Class 2 32GB card and it's great. Sandisk cards always perform better at read & write speeds than the stated.
You're not going to notice any difference in speed..... not until you connect to a PC that is the only time when you will find a Class 2 is slower than a Class 6.

Using a class 2 16gb and seems to working fine
Sent from my GT-P1000 using Tapatalk

[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?
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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] X8 support class 10 of memory?

I bought 8G (Class 10) memory card. but i don't think my phone(x8) support it?
in all of tests, My phone shows has class 4. Is it correct?

did you buy the card from Ebay or is it from a reputable source? Eg are you sure the card is a genuine class 10?
Swyped from HTC Desire S using XDA Premium

I don't know, how can i understand it is original?

insert your card into cardreader and record big file, and check record speed.

Have a look at the sdcard.
The most of the sdcards have a little number in a circle on it, and that´s the class of the sdcard.
So, if you can find a "10" in a circle on your card, it´s class ten.
if you have another number in a circle on it, then it´s not class 10

It may be a hardware problem, but testing the speed on a pc would be taking you out from the doubt.
I'm using a class 10 8gb Kingston microSD. No problem at all.
However, I experienced heavy writing problems with class 4 8gb Kingston. This was the reason why I had to resell this card, only to check with my own eyes the problem was on the x8 and not in the class 4 microSD.

I tested my 8G-Class 10 microSD with Ram Reader,
File: 699 Mb
write: 90 s ----- 7.8 Mb/s
Read: 65 s ----- 10.75 Mb/s
File: 398 Mb
write: 50 s ---- 8 Mb/s
Read: 20 s ---- 19.9 Mb/s
How do you think a bout my class of microSD?

Its class 8
Sent from my X8 using XDA Premium App

kingstone products have a lot of compatibility problems, i know they're popular but they suck.
I'm using an SDHC A-Data 8 Gb class 10 and works great.

cdanisor said:
kingstone products have a lot of compatibility problems, i know they're popular but they suck.
I'm using an SDHC A-Data 8 Gb class 10 and works great.
Click to expand...
Click to collapse
and become a faster relno from this phone?

XperianPro said:
Its class 8
Sent from my X8 using XDA Premium App
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Those results mean nothing, there are lots of things that can influenciate speed. Also, the cards' speed is tested on factory with a special machine, not a computer, so real world speeds are always a bit slower. If the card was a fake i think it would be getting far worst performance.
Test it on a desktop pc (rear ports) using a decent card reader.
Sent from my E15i using XDA App

I have a kingmax class 10 8GB.
In pc, i can reach around 14.x mb/s.
In phone, fastest is 8mb/s, but in average 6mb/s+.

molimo said:
I bought 8G (Class 10) memory card. but i don't think my phone(x8) support it?
in all of tests, My phone shows has class 4. Is it correct?
Click to expand...
Click to collapse
Friends
At last, I tested my microSD (class 10) in Galaxy S I9003 with "SD Tools v2.1" & "SD Card speed test v1.9" applications, They show that the class of my microSD is 10, then tested again in x8 and show class4 or class6.
conclusion: Our x8 can't support class 10. it support class up to 6.

It's true that the sd card interface of the X8 can have a limit below class 10, but remember that there are always factors that can limit the speed.. Partition type, allocation unit size, ROM, kernel.. But yeah, i won't be surprised if it had a limit of roughly 6MB/s..and it's not that bad

Class 10 is very smooth for ungaze...

I test my 16GB V-Gen class 10 memory card with sd tools and the result:
read speed : 14,4 mbps
write speed : 8,2 mbps
i use 32k allocation unit size when formatting through computer,,

i have 8GB AData class 10 and work fast and smooth
Read 20 mb/s
Write 12 mb/s and some time more

can someone confirm if X8/W8 can benefit class 10? cause I have here class 6 offered by a friend for a very cheap price cause it is second hand

amnher said:
can someone confirm if X8/W8 can benefit class 10? cause I have here class 6 offered by a friend for a very cheap price cause it is second hand
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i can confirm, because i use it.. i have AData 8GB class 10 card.

Cacobronx said:
i can confirm, because i use it.. i have AData 8GB class 10 card.
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Click to collapse
but compared to class 6? is it really big?

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] Note sdcard read speed.

Hi,
I am eyeing for the sandisk mobile ultra 32gb class 6. It claims to have 30mb/s read speed which is really impressive.
But does galaxy note sdcard reader will be able to handle 30mb/s read speed? Because for what I know most card reader tops at 20mb/s which is why most cards even those class10 ones has read speeds of less than 20mb/s.
Please correct me if I am wrong.
Thanks.

I don't think Note can handle 30 mb/s .. someone with more insight on the hardware of the card reader on Note might be able to help you

I have 32GB 10 class I can help but tell me pliz how to chech the speed read write?

PetrSoap said:
I have 32GB 10 class I can help but tell me pliz how to chech the speed read write?
Click to expand...
Click to collapse
http://crystalmark.info/software/CrystalDiskMark/index-e.html

but that is for PC and as I understand we should get the test on Note with the card inserted ????

PetrSoap said:
but that is for PC and as I understand we should get the test on Note with the card inserted ????
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That's the 'realism' that I had in my mind. If I have a full 32gb card, and wanted to transfer my pictures and videos, which is what mostly the card will be used up for, how is the transfer speed will be? If I am able to use the full 30mb/s read speed on sandisk mobile ultra card, that can greatly reduce the amount of time to move 32gb of data off the sdcard.
For sdcard application usage within the phone itself, the only thing that I can think of that will use alot of bandwidth on the card is recording full hd video, which a class 6 card is more than enough to handle the write speed. If for read speed, a mere class 2 cards can do 8mb/s read speed which is fast enough to watch your regular hd video, listen to your mp3 etc.
You just can just connect the phone to pc as storage mass and the program will detect the drive. You can start the test using the software.
What is your microsd brand?

k heres my 2 cents, my family has 5 galaxy notes. Basically I tried many brands ranging class 4, 6 and 10. First off the class 4 32g are like 40% or so slower than the class 10's. The 2 class 10's I have are all different brand both 32g and I can tell you they don't really make a lot of diff in terms of speed its less than 0.5mb per sec diff (the slower class 10 is same brand as the Note and the other one starts with Lex???). Then you have the class 6 64g which runs up to around 10% or so slower than the class 10. At the end of the day what you find is class 6 and 10 are both fast but the class 4 are dam slow. On my machine I'm using the 64g card. Speed was determined and optimized by SD booster and SD tools.

Thanks for info, that's alot of GNotes you got there.. your family must like BIG SCREENS.
Anyway, my actual question was, is the GNote be able to handle 30mb/s transfer for the sandisk mobile ultra versions or atleast what is the highest read speed for GNote card reader.
There is one benchmark that I came across somewhere that proves that the card does actually deliever that transfer speed albeit using usb 3.0 port. It takes atleast a regular usb 2.0 reader on a usb 3.0port to achieve it. A usb 2.0 reader on usb 2.0 port barely makes the 20mb/s mark on the same card. So the usb 3.0 port is quite crucial even though a usb 2.0 reader is being used on it.
So yah, the ideal situation is someone actually has the sandisk ultra mobile card + GNote and is willing to give spare time to benchmark it for us and post it here.