Database Users

Anyone using a class 10 card?

Hey. Just curious how many of you have replaced the stock 16gb class 2 sdcard with class 4,6 or 10. Can you chime in with your inputs on performance between these classes. I know the theoretical transfer speeds, but I am curious how they actually perform in day to day use. Would jumping from a class 2 to class 6 be noticeable, or a class 6 to class 10?
Thanks

I am interested to.
Have just upgraded to an Ebay 16gig Class 6. Speed is faster than a Class 2 but not sure if it is a Class 4 or class 6.
Tempted to buy a 8gig Class 10 but struggling to find a reputable source of these.
In case you don't know Class x denotes the write speed. Class 2 has a 2meg/sec. Class 6 has a 6meg/sec write speed. Also gt a increase in read speed. All must be good for the HD unless the Interface is slower than the card??

dusty_nz said:
I am interested to.
Have just upgraded to an Ebay 16gig Class 6. Speed is faster than a Class 2 but not sure if it is a Class 4 or class 6.
Tempted to buy a 8gig Class 10 but struggling to find a reputable source of these.
In case you don't know Class x denotes the write speed. Class 2 has a 2meg/sec. Class 6 has a 6meg/sec write speed. Also gt a increase in read speed. All must be good for the HD unless the Interface is slower than the card??
Click to expand...
Click to collapse
From my reading and investigation, not many devices out there support such high speed, I'm thinking phone isn't one of the device that do. I would like to see someone do some testing and see if there is a difference on a HD2 between a class 6 vs class 10.

I didn't know they had a class 10, but I'm running a class 6 and I can tell the difference from the 16gb stock card. Loading Android is a lot faster too.
Sent from my HTC HD2 using XDA App

I have a class 10... Its a great diference.

I've got a couple of 16Gig class 2s and a 4Gig class 10. I can certainly tell a difference. I haven't done any empirical testing but gut says it's almost twice as quick. The difference comes when you multitask, getting a couple apps open, app loading, etc.
The problem with the 4Gig is the obvious lack of size. I'm thinking of buying a 32Gig class 4.

xicko said:
I have a class 10... Its a great diference.
Click to expand...
Click to collapse
between a class 6 and 10, is there still any noticeable improvements with the phone?

I want video evidence.

Lorddeff07 said:
I want video evidence.
Click to expand...
Click to collapse
Agree! A video might help us to decide if it is worth buying a class 10 card.

bangsters said:
between a class 6 and 10, is there still any noticeable improvements with the phone?
Click to expand...
Click to collapse
Looking at numbers alone, a class 6 is three times faster than a class 2 and a class 10 is five times faster than a class 2 so upgrading from a class 2 would appear to be a sure fire bet in both cases
In comparison a class 10 is only 1.6 times faster than a class 6.
So I think I will stick with my class 6 for now until class 12+ comes out.

So in conclusion do you guys think a faster SD card is necessory? because once xda team finish develop a perfect android rom i believe they are gonna make it a rom, in that case we would'nt need a faster SD card, But i really wonder if a faster SD card improves the performance? Can someone kindly provide a video for this ? Thanks ,,

class 10
I have a 16gb kingston class 10, compared to my Transcend 8gb class 6, not that much difference, compared to my Class 2 16gb that came with the phone? huge difference.

I'm now going out, to buy a 16GB classe 4 , i think is sufficient, given that in September Cttula will provide NAND, and the class will no longer important, and I'd rather have more space for my photos and videos, in vacation than a business card 8GBclasse10 faster.

Is the ETA for NAND September?

Nand speed vs. Class 10 card?
Anyone know what the read/write speed of the nand memory is as compared to the say the read/write speed of a class 10 card? I know it should be faster, but is it really that much faster?

bangsters said:
Hey. Just curious how many of you have replaced the stock 16gb class 2 sdcard with class 4,6 or 10. Can you chime in with your inputs on performance between these classes. I know the theoretical transfer speeds, but I am curious how they actually perform in day to day use. Would jumping from a class 2 to class 6 be noticeable, or a class 6 to class 10?
Thanks
Click to expand...
Click to collapse
i got class 10 kingston 16gb,
transfers between pc and phone is up tp 6 mb/s read and write, but on the phone it self i think it's faster.
previously i had class 2, 8gb sandisk and it was alot slower...

how do I know which class the SD card is?

i use a class 10 card in my digital slr and it makes quite a big difference. i'm sure it would create a significant performance boost with android

pack21 said:
I'm now going out, to buy a 16GB classe 4 , i think is sufficient, given that in September Cttula will provide NAND, and the class will no longer important, and I'd rather have more space for my photos and videos, in vacation than a business card 8GBclasse10 faster.
Click to expand...
Click to collapse
I dont find any microSD 16gb classe4 just, classe 2 and classe 10 - 100€
8gb classe4 i found for 20€

somebully said:
Is the ETA for NAND September?
Click to expand...
Click to collapse
Yes
reocej said:
Anyone know what the read/write speed of the nand memory is as compared to the say the read/write speed of a class 10 card? I know it should be faster, but is it really that much faster?
Click to expand...
Click to collapse
I think, it cant be comparable....starting by speed and smooth.

[Q] Micro Sd class 10 or class 6?

I'm looking to buy a new MicroSD and wondering if getting a class 10 over a class 6 would make a significant difference to the phone (if im using data2sd and or apps2sd)
Thank you!

I think the difference between class 6 and 10 would feel minor, where-as the difference between the class 2 and class 6 feels huge.
And since this is the Vibrant forums, I should mention that the internal memory in the phone is very fast. I tested it at over 10MB/s write on my first phone. My second phone its closer to 6 MB/s write. So you apps and stuff should run perfectly fine from the internal app storage.
I should also mention that I purchased the new kingston micro sd thats rated class 4 but claims speeds upto class 10. Upon testing that I got 9 MB/s write. ($28 after $10 reward from buy.com). My previous class 2 16GB card tested it 2.6 MB/s write for comparison.

Shane_pcs said:
I think the difference between class 6 and 10 would feel minor, where-as the difference between the class 2 and class 6 feels huge.
And since this is the Vibrant forums, I should mention that the internal memory in the phone is very fast. I tested it at over 10MB/s write on my first phone. My second phone its closer to 6 MB/s write. So you apps and stuff should run perfectly fine from the internal app storage.
I should also mention that I purchased the new kingston micro sd thats rated class 4 but claims speeds upto class 10. Upon testing that I got 9 MB/s write. ($28 after $10 reward from buy.com). My previous class 2 16GB card tested it 2.6 MB/s write for comparison.
Click to expand...
Click to collapse
Just to help out here...
the difference between class 2 and class 6 is the exact same as class 6 and class 10. Remember the cd-rom speeds (52x, etc)? That's how the speed is calculated for a SDHC card. So a class 2 = 2x cdrom, class 6 = 6x, class 10 = 10x.
whether our hardware has capability to handle what a class 10 can do, that I don't know. I'd definitely advise to get something with more space than a 2GB card though - I'm not sure everyone needs a 32 (personal opinion/long discussion), but I absolutely agree it should be improved upon.

designerfx said:
Just to help out here...
the difference between class 2 and class 6 is the exact same as class 6 and class 10. Remember the cd-rom speeds (52x, etc)? That's how the speed is calculated for a SDHC card. So a class 2 = 2x cdrom, class 6 = 6x, class 10 = 10x.
whether our hardware has capability to handle what a class 10 can do, that I don't know. I'd definitely advise to get something with more space than a 2GB card though - I'm not sure everyone needs a 32 (personal opinion/long discussion), but I absolutely agree it should be improved upon.
Click to expand...
Click to collapse
I understand that, thats why i picked those classes. But my point is that a class 6 card is 3x the speed of a class2 where class 10 isnt even twice as fast as the class 6. So the perceived difference is smaller, even though the technical difference is the same.

I'm still running a class 2 and I've been wondering if this is holding me back on this phone (card was previously in my G1).
Will the lower classes function the same (creating ext2 etc...) it's just a matter of speed? Just wondering if there's anything that simply can't be done with a class2 or even 6 that could be done with a 10.

CapitalM3 said:
I'm still running a class 2 and I've been wondering if this is holding me back on this phone (card was previously in my G1).
Will the lower classes function the same (creating ext2 etc...) it's just a matter of speed? Just wondering if there's anything that simply can't be done with a class2 or even 6 that could be done with a 10.
Click to expand...
Click to collapse
Just cost you more. Do you really need a class 10 for this phone? Avatar is on a card that isnt even a class 2.

Vegastouch said:
Just cost you more. Do you really need a class 10 for this phone? Avatar is on a card that isnt even a class 2.
Click to expand...
Click to collapse
xD What class was the stock sd card?

I only ever see class 6+ cards being used in higher end compact cameras and SLRs.
Putting anything higher than class 6 in a phone your using for apps/music/movies isn't needed and just a waste of money.
I've also seen a lot of people saying the memory card speeds with the galaxy s are bottlenecked right now, so your not even going to get top speeds with a class 6.

Vegastouch said:
Just cost you more. Do you really need a class 10 for this phone? Avatar is on a card that isnt even a class 2.
Click to expand...
Click to collapse
While the card isn't marked, it tests out at just over 4MB/s which would put it in a class 4.
And we should be clear that the class refers to the write speed. A class 2 will read at 10 MB/s just like the other classes. Where you run into issues with class 2 cards is when you start modding or running programs from the sd card. If you use the card for a swap partition or something the write speed now plays a major factor in the usefulness.
If all you want it for is to place your music files on there and listen to them, then a class 2 will be plenty. That was my initial thought when I bought my 1st 16 GB card for my mytouch3g. Then I got into custom roms and found myself limited.

How do you test the speed of the SD card?

What size microsd card are you looking for? If its a 32GB, I have only seen a Sandisk microsd in Class 2. As far as I know there are no higher classes at this time. Hopefully that will change soon. I would like to get all of my music onto one 32gb card.

designerfx said:
Just to help out here...
the difference between class 2 and class 6 is the exact same as class 6 and class 10. Remember the cd-rom speeds (52x, etc)? That's how the speed is calculated for a SDHC card. So a class 2 = 2x cdrom, class 6 = 6x, class 10 = 10x.
whether our hardware has capability to handle what a class 10 can do, that I don't know. I'd definitely advise to get something with more space than a 2GB card though - I'm not sure everyone needs a 32 (personal opinion/long discussion), but I absolutely agree it should be improved upon.
Click to expand...
Click to collapse
This isnt exactly true. with cdroms the X stands for how much faster it would spin in relation to a audio cd. So 1x ment it spun at the same speed as a audio cd. 2x was twice, ext ext. And this was a max speed.
Classes for SDCard stands for the minimum transfer speed. class two is at least 2mbps, class 6 is 6mbps, and so on.

frankencat said:
How do you test the speed of the SD card?
Click to expand...
Click to collapse
google FDbench
it will test the read and write speed as well as operations per second.

I still can't find a 32gb microsd class 10, anyone find one for sale?

Class 10
Class 10 limitation presently is 8 gig for all brands except the Kingston and soon to be released Silicon Power. The Kingston brand never benches as advertised, so they are not reliable from my point of view. Silicon power has been pretty solid on their claims from my testing versus their claims, but I have not yet got my hands on the latest class 10 16 gig, I have been trying to buy for the since 10-1-2010 but not out in USA yet.
Kingston (in my opinion) is rife with false claims and I find their products have always been sub par.
Flashing and alike works better with class 6 over class 2 & 4. So, if you really want more memory the only 32 gig class 6 I have seen advertised (amazon) are: Transcend, Centon, and Komputerbay (what a name?!) 32 gig Class 6
Other than that, we wil just have to wait until they get the algorithm figured out for a micro ad card with that much ram and that fast.

Get the app "sd card speed test" it works ok Im sure there are others as well

I imagine the only reason you would need a Class 6 card or above is if you plan to take a lot of HD video. Apart from that, even a Class 2 is fast enough to keep up with the still camera, not to mention anything that just requires reads, like music or movie playback.
As for running apps off an external SD card, why would you ever want to do that? You can load close to 2GB on the internal app space, which is likely way faster than any mounted external SD card. I feel like an app whore and I'm not even close to using half that space. By the time apps start getting large enough that it's an issue, we'll be on the Vibrant 2 or beyond.

glad that you asked
merrifield69 said:
I'm looking to buy a new MicroSD and wondering if getting a class 10 over a class 6 would make a significant difference to the phone (if im using data2sd and or apps2sd)
Thank you!
Click to expand...
Click to collapse
because I just picked up a 16G class 10 by WinTec last week and it is VERY fast from boot up with 9G occupied from 15G available (wondered 1G gone to? and that is a lot of gone G lol). It was $42 wo tax expensive but so far the fastest.

Whoohoo
mine 16G class 10 tested 2x >8M and 1x >9M write, 3x > 18M read and it was probably so fast that the result said "unknown class" lol. x means 1 run with 2MB buffer setting. Downloaded app call SD card speed tester.

There are now some 32GB class 6 SDCARDS on the markey, and with 2.2 and installing apps to SD that might matter. It might also matter if you have a TON of music and images, as "Scanning SD for Media" would be faster.
You will pay money for the time savings though.

[Q] What memory cards are you using to run android from?

Hi Guys, I'm currently testing the MattC 1.5 build from a generic 4gb microSD card i had lying around and it works pretty well, but i was thinking of buying an 8gb Sandisk Mobile Ultra card to replace it. I would link to the car but i'm not allowed A quick search on google/ebay should bring up the card i want.
Do you think I would notice an improvement in speed with android running from the card?

kingston 8gb sdhc card Chinese bootleg

If your current card is a class 2 and the 8 gb is a class 4 or higher than yes, tou would notice a difference.
Sent from my HTC HD2 running DarkStone HD2Froyo v1

I use Sandisk 16gb sdhc and no problems with running android-of course only proper wm rom.... Not sure which class is the card

my current card is a Class 2 4gb Sandisk, for £17 i might just get the new card and see how it goes. Would you expect an increase in the score on the Quadrant benchmarks?

Sandisk mobile ultra sdhc 4 gb class 6

are these cards definitely class 6 as i have seen various sites saying they are only class 2 but much faster than the class 2 minimums?

I use a Sandisk ultra sdhc 8gb class 6......working great

16gb stock card that came with my tmous hd2, so im guessing its a class2 but everything runs smoothly tho.
Sent from my HTC HD2 using XDA App

8gb A-DATA class 6

Kingstone 4GB SDHC Class 4, working perfectly, but I'm looking for a class 6 card to see the difference in speed

See my signature, working perfectly without lags , I have never seen a SOD.
Sent from my HTC HD2 using XDA App

Hi,
Well, I use since last week a SanDisk 32 microSDhc class 2. Pretty fast in data transfer.
Read somewhere that the class 2 of this 32 GB edition can be compared to class 6 of older micro SD cards.
Had the standard 2gb microSD before, which was sold with the HD2.
Have no issues of speed with SanDisk 32 microSDhc class 2, when it comes to running Android and transfer data.
Recommend it!

generic 16gb class 2

Adata 8g class 6 lighting fast cost $15 running mattc froyo 1.5 fullram

Apacer 16GB SDhc class 4
Working perfectly..

Download SD Card Speed Tester from Market
and test your real speed. Run it three times on each card.
I have Class 2's that are 2's. I have the original 16 gb Class 2 that rates at six and a class 4 Sandisk that rates at a 9. You never know till you test it. Also have a Class 6 that rates at a 9.

8 gig kingstone class 4.
i got a 4 gig class 6 micro sdhc, but i can't notice a difference in speed big enough to compensate the loss of 4 gigs (lots of songs stored).

johnboatcat said:
and test your real speed. Run it three times on each card.
I have Class 2's that are 2's. I have the original 16 gb Class 2 that rates at six and a class 4 Sandisk that rates at a 9. You never know till you test it. Also have a Class 6 that rates at a 9.
Click to expand...
Click to collapse
i have an 8gb class 2 however the test says i have class 4 read/write speeds so im pretty happy

Just got 1544 in quadrant using class 2 sandisk 8gig

[Q] Most Reliable SD Card to Run Android

Might sound like a strange question, but what would you suggest getting for most stable Android run. I've had a SAN DISK 16GB but it would always get corrupt and formatting (tried using SD Formatter/windows tools/phone) would only fix the problem for short time.
So which of the following in your opinion is the most reliable choice:
1. SAN DISK
2. PATRIOT
3. Kingston
4. ADATA
5. Transcend
6. Lexar
7. SONY
Also, what class (2,4,6 would be nice if someone could explain whats best and generally what it means). As well as capacity (whether it affects reliability)

No one buy the kingston class 4 4gb card, does not work well at all! I trashed it lol

i got a Class 10 Patriot card, works well, really well

Transcends 8gb Class 6!
Never had a problem with it

Hi, I am using transcend 8Gb card. I dont find any problem till now.

RiData 16GB Class 6
Been using it for 2 weeks. No issues.
Write & Read transfers are averaging 9mbs when transfering backups to and from.

Kingmax 8Gb Class 6, not bad

Don't buy transcend 8gb class 6 card in any situation, it has really bad power drainage problem in every build, after I swapped it with my friends verbatim class 4 8gb I have top 1 % per hour drain in standby, believe me.

Stock 16 gb san disk I got when I purchased my hd2, runs amazingly
Sent from my HTC Desire using XDA App

Got 3 sandisks 2 4 8gb..all work well

I use stock card
Sent from my HTC HD2 using XDA App

Any way to check faulty micro sd?
Thanks everyone for the input, seems like I've either got a faulty SanDisk card or doing something wrong here. Are there any tools to test whether or not my 16Gb SanDisk micro sd is faulty or possibly corrupt... By the way, I got it off ebay for $20... seems fishy, although it came in original packagin brand new.

...
German TakeMS 4GB Class6, works like a charm...

Transcend 16gb class 6 runs Android with no hiccups at all and the transfer rate is blazing fast

Samsung 4Go Class 4, low battery drainage, performs like a class 6 card. Original style (grey coloured).

Battery consumption
Battery consumption on Transcend sucks if you want long battery life use sandisk or best by my tests 8gb class 4 Kingston.

i have 4 different sd cards kingston 4 gig class 2, 2 sandisk 4 gig , and a class 6 transcend 8 gig...and i always get better results with the stock card

deli_gt said:
Don't buy transcend 8gb class 6 card in any situation, it has really bad power drainage problem in every build, after I swapped it with my friends verbatim class 4 8gb I have top 1 % per hour drain in standby, believe me.
Click to expand...
Click to collapse
Sd card don't have jack sh*$ to do with battery drain. As far as cards go, it don't matter. Just pick one. There all the same regardless if someone says this one is faster because it's a class 6, or 8. I have a class 2,4, and 8. No difference what so ever. Even though its written on the class 8 at a higher speed.

Any idea on why sometimes I find non-removable random symbol files on my SD? Does this indicate corruption?

German TakeMS 8gb class 6 extreme fast and stable.
beware buying microsd on ebay
chk this site before buying http://sosfakeflash.wordpress.com/

32GB MicroSD Wait!!!

I recently picked up a 32gig MSD for my Evo as I kept running out of room on the 16gig card. I went from a 16GB Class 6 to the latest Class1 or 2 that SanDisk has. My phone takes around 3 minutes to boot now at best. Looking at gallery or anything like that is SLOwwwwwwwwwwwwwwwwwwwwww. If you are thinking about and have lots of pics/videos and use App2SD like I do, you will only be disappointed in the end results with the Sandisk card. Just sharing so others can save and wait for a real card.
Lisnup

Interesting...I have a 32gb sandisk class 2 card that is 3/4 full and I have very little if any delay...I only have 8.19gb space left.

MsRandall said:
Interesting...I have a 32gb sandisk class 2 card that is 3/4 full and I have very little if any delay...I only have 8.19gb space left.
Click to expand...
Click to collapse
I have 11 gigs left at current and the only change I did was this card and I can say that performance of the gallery and boot time has severly suffered from what my old card gave me.

the lower the class number on the card, the slower the transfer rate. So your 16gb class 6 may have less room, but its way faster than a 32gb class 2. Dont know if this helps or not.

gsx62391 said:
the lower the class number on the card, the slower the transfer rate. So your 16gb class 6 may have less room, but its way faster than a 32gb class 2. Dont know if this helps or not.
Click to expand...
Click to collapse
+1. I switched from the Class 2 8GB card that came with it to a Class 10 16GB card and the differences are staggering. I never benchmarked my class 2, but I get around 17.8 Mbps read/write on this one. On my 8GB card it would take about nine minutes to transfer a movie from my phone, now it takes under a minute.

that isnt always true that cards are just slower. The class system is a min spec system meaning they have to atleast hit this to make it they can be well over it depending on the chip used

Most people benchmarking the San disk 32gb cards are finding them to perform closer to class 4 then the indicated class 2. Check out the thread in the accessory section. Perhapse your card is defective.

Sandisk. The Yugo/Walmart of the mem card world. None of the pro photographers that shoot digital that I've met will even touch them.

lisnup65 said:
I recently picked up a 32gig MSD for my Evo as I kept running out of room on the 16gig card. I went from a 16GB Class 6 to the latest Class1 or 2 that SanDisk has. My phone takes around 3 minutes to boot now at best. Looking at gallery or anything like that is SLOwwwwwwwwwwwwwwwwwwwwww. If you are thinking about and have lots of pics/videos and use App2SD like I do, you will only be disappointed in the end results with the Sandisk card. Just sharing so others can save and wait for a real card.
Lisnup
Click to expand...
Click to collapse
I've had a similar experience with my 32GB class 2 sandisk MSD.
Sent from my PC36100 using XDA App

My 16gb class"6" sandisk POS clocks at class 4, barely. Got what I paid for at $30 I guess. (last time I buy that crap)
Borrowed from another post! View attachment 474476

My 32gb clocks right at class 4 just as its labeled, I like it seems to work just fine
Sent from my PC36100 using XDA App

My 32gb. Class 2 SanDisk clocks in at Class 6... lol, I guess I got what I paid for. It suck BC I just paid for a 32gb Class 4 Kingston BC I thought it would be faster.
Sent from my PC36100 using Tapatalk