Database Users

MicroSD Question

Hi, sorry if this is a double post. I did look around but could not find much info.
I'm interested to know how well the new 16GB MicroSD cards work on the Xperia. Anyone using one of these? My main concern is that they all seem to only be class 2 atm. Is this too slow to run apps and my videos stored on it etc?
Should I wait till a class 4 16GB card comes out?
Thanks
Edit: I also noticed that SanDisk has a “Mobile Ultra” memory card range. Only up to 8GB though. Anyone using one of these? Is there a big difference in speeds?

i don't think it matters in a phone.

I ordered the eact same Mobile Ultra card today. Should be here saturday, so I will tell when I get it. But assuming it's Class 6 card, it should be fast. I wouldn't go with Class 2, since it's slow. But as Jabe says, it might not matter on the phone.

So as at now no one's using a 16GB yet?

Give me a week or 2. I'm planning on ordering the Sandisk one.

Sandisk Mobile Ultra is good, and it's what I am using for X1. Since it's class 6, the read/write speed is about 20/16 mb/s, which is much faster than class 2. If you wanna watch video storaged in card, this one is your first choice.

wdq30 said:
Sandisk Mobile Ultra is good, and it's what I am using for X1. Since it's class 6, the read/write speed is about 20/16 mb/s, which is much faster than class 2. If you wanna watch video storaged in card, this one is your first choice.
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Note that the speed in the end is depending on the host itself. If the host is slow, even if you use class 6 memory card, it's not going to make any difference. Personally I believe the phone itself would be the bottleneck and not the memory card.
I know it's not totally relevant but just for reference, take a look at the link below. As you can see the speed of class 2 and 6 are pretty identical as it's limited by the host. This is even with a dedicated memory card reader. Compare the 2nd and 4th entries from the bottom.
http://www.robgalbraith.com/bins/reader_report_multi_page.asp?cid=6007-9438

VaThInK said:
Note that the speed in the end is depending on the host itself. If the host is slow, even if you use class 6 memory card, it's not going to make any difference. Personally I believe the phone itself would be the bottleneck and not the memory card.
I know it's not totally relevant but just for reference, take a look at the link below. As you can see the speed of class 2 and 6 are pretty identical as it's limited by the host. This is even with a dedicated memory card reader. Compare the 2nd and 4th entries from the bottom.
http://www.robgalbraith.com/bins/reader_report_multi_page.asp?cid=6007-9438
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Click to collapse
If that's the case, what's the optimal speed supported by X1?

So anyone able to compare the 2 classes

ipporek said:
So as at now no one's using a 16GB yet?
Click to expand...
Click to collapse
I'm using a 16GB Class 2 at the moment. No probs with apps or music. But I have no videos on the card...

with normal sd cards the pdas were mostly not able to transfer as fast as the sd card supported
as the sd interface in onchip and not that fast
would like to see some tests if the same hold true with newer pda's and class X microSD cards

anyone able to follow this up yet?

I'm using a Sandisk 8gb Class 4 HC. No problems with speed or data read/write (on the phone itself).
Using the phone as a disk drive though (not activesync) is noticeably slower than using a USB adapter, *suggesting* the phone itself is the bottleneck?

I'm using a SanDisk 8GB Class II Card and I had no problems with photos, videos or music so far.
Don't think a Class 4 or 6 is worth the price in a mobile phone.

I got my 16GB Microsdhc today. And everything works. Sad thing is it only shows 15GB.

I find no difference in speed between my 8G class 6 and 16G class 2 (both from Sandisk)
xmoo said:
I got my 16GB Microsdhc today. And everything works. Sad thing is it only shows 15GB.
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it's 15G probably because of the way how "G" is being calculated. 16,000,000,000 = 16,000,000,000/(1024*1024*1024) = 14.9GB

im using a 8g class 4 card, music, apps and vids work great.
just a quick question, the x1 has a sd card limit of 32g, when a larger card comes out like the 128gb card that sandisk has said will come out, could windows mobile have a update so that it can read it or is limited to the reader hardware inside the x1

I have 2 cards: Sandisk 16GB Class 2 and Kingston 8GB class 4.
I use Sandisk in Xperia, and the speed is more than sufficient. It reaches 12-15 MB/s writing on USB adapter. Reading - it's no problem reaching even more. So it's ok, speed wise.
I don't think you would need more speed in Xperia )
There's no HD video recording option in there )

one can use pocket mechanics to benchmark the sdcard speed
if the results are lower i would suspect it show the bottleneck speed
of the sd interface of the qualcomm cpu in x1

I have a 16gb micro sdhc and some .avi videos lag (highish quality). Specifically, top gear season 12 episodes from finalgear.com. it might be the divx client though, Im using the WM 6 Pro version available on the divx website.

microSD 32Gb class 6 and Galaxy S

I am thinking about purchasing a 32Gb microSD for use with my galaxy S.
My concern is that, is this too large? Are there any bad side effect like it being too slow to display picture/start up scann/run applications?

Which brand? That's probably more important for the speed than class (a class 2 Sandisk is often as fast or faster than a class 6 from a lesser brand).
The capacity of the card shouldn't affect the speed during most situations. However the phone does scan for media each time it is turned on or after disconnecting from USB connection (Kies or mass storage), the amount of time this takes depends on:
-the amount of media stored on the card and
-(probably) the read speed of the card.
Note that class rating is minimum write speed - so it's not a great indicator of real-life performance.
Also note that some too-cheap-to-be-true cards are actually smaller capacity cards that report larger capacities to fool the customer.
BTW where are you getting the card from (I want one as well ).

Hi flamingpitofhell,
I am looking at Sandisk as well and most likely get it from their online store. I am trying to find more information whether it is worth the trouble.

I don't think Sandisk sell class 6 cards (yet). Buying from their online store's also more expensive than online retailers (I can get one in Australia for AUD155, which is ~USD137, cf their RRP of USD200).

thanks for the pointer. will look around for local stores here in Thailand.
Which city in Australia are you in? I studied in Perth more than a decaded back.

I'm in glorious Melbourne mate, haven't been to Perth yet

the only LEGIT 32GB Sandisk available right now in the market is only Class 2
if you read anything else, it is FAKE, specially from eBay
wait until the other microSD manufactures start pushing out 32GB on class 4 or class 6 before buying.
i'm using 2x 16GB Class 6 until the 32GB class 6 becomes available.

I'm using Class 2 32GB card in mine, its fine.
Its slower when you're transferring to the card from your PC, but for most people thats only particularly problematic the first time (loading music collection), after that you'll not really notice a difference in the phone (the read speeds are basically the same, and the phone can neither read nor write to the card faster than a Class 2 card can cope with). You can see it in the benchmarks taken post-mimocans fix - Class 2 cards are no slower than any other Class within the phone.
Grab one now and be happy.

NZtechfreak said:
I'm using Class 2 32GB card in mine, its fine.
Grab one now and be happy.
Click to expand...
Click to collapse
Where did you get yours from and how much for. I`m interested in getting one myself.
Thanks

my local stores already carry the real Sandisk 32GB class 2
too slow for my taste, i like to run Apps from the SD card, also use it as a SWAP partidion to prevent the LAG problem people complains about, it's a very easy fix
http://forum.xda-developers.com/showthread.php?t=724251

i wonder what would be better a 16gb class 6 or 32gb class 2...
is it worth sacrifising double of the memory for the speed?

onbacardi said:
i wonder what would be better a 16gb class 6 or 32gb class 2...
is it worth sacrifising double of the memory for the speed?
Click to expand...
Click to collapse
it depends what you are trying to do
if it's just to listen to mp3, then Class 2 is fine
if you want to run games, software, watch movies, use it for SWAP drive to have no lag, then minimum a Class 6

Class ratings don't really seem to have too much of an effect on real world performance: http://forums.whirlpool.net.au/forum-replies.cfm?t=1468705. Just discount the last result from the SGS (it's most likely mistaken for the internal SD).

i rather trust my experience coming from PalmOS + WinMb where real life situations using a class 4 or slower cards, made a huge word of difference when launching applications from SD and watching movies from SD
funny enough the numbers reported on that topic shows SGS i9000 to have the fastest speed even using the same card that got lower speed on the other phones.
which seems to point out it's directly proportional to the CPU speed, and the multitasking software running in the back end.
however as you see on those test itself, there are speed differences between class 2, class 4 and class 6
the same class # can not be compared to another class # of a different size,
if you imagine a hard drive, the bigger the hard drive the more layers/disk area it has to read, the same is true even for static SD cards.
however as pointed on those test Transcend usually has the fastest SD cards in the market, that's why i always buy that brand for performance, using a 16GB Transcend myself, waiting for the 32 GB class 6+ to come out
Adata has 2 lines, the performance line, and the standard line
if you want speed get the performance SD cards
Kingston and Sandisk are mostly standard speed, they don't release much performance level SD cards anymore, but they do have lots of those on USB sticks.

I tried my Brothers Sandisk Class 2 32GB and it worked perfectly.
Granted it's not as fast as my Sandisk Mobile Ultra Class 4 but that card flies anyway.
Certainly for recording your large movie files taken with the camera it's no different in speed than using the built in SDCard on the phone.

I have no problems watching 720P video on my phone. I have no problems launching applications either.
So much misinformation...

of course there is no problem, the issue here is getting the top performance, any SD card will work just fine.
it's just a matter of how fast/slow are you able to torelate

The only time you will notice any difference in speed is when transferring data to and from the card.
However, when you have double the space of other cards to consider speed should not be a deciding factor.
I'm already looking to get the Sandisk Class 2 32GB card. It will store all of my work files normally kept on my Laptop.
My Sandisk Class 4 Mobile Ultra 16GB will be my spare ~ should the larger card fail...

Thanks for the information s everyone.
Sent from my GT-I9000 using XDA App

I have the 32GB sandisk card and works perfect. I have a 720p mkv file and my music on there. Playback was superb for the video with no noticeable lag. Mind you the card isn't anywhere near full yet. From my limited knowledge of sd cards, they put data on the fastest part first so the fuller it gets the slower the card is likely to get..
My plan is to put movies and songs on the 32GB file and reserve the internal 13GB for capturing video and taking pictures on the phone.

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.
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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.
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+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

Is it real or placebo? Would using faster SD card improve phone performance?

I just got an "advertised " centon class 6 card. It seems a little quicker. I can't tell. Anyone can shed some light on this?
Maybe because the card is empty and doesn't have thousands of files on it, like my previous one does, might have something to do with something.

using a faster card will impact the performance slightly. Any time the phone has to go to the SD card to read something (opening apps, pics, videos, etc.), the faster it can read it, the faster it performs.
Is it necessarily noticeable? Probably not.

not a placebo at all, If you had let's say a Class 2 or class 4 sd card and you get a class 6 you can tell the difference.
I changed the stock card for a class 6 and I can tell the diffence as when you view pictures or play music.

For recording and watching video and copying data would benefit from a faster card. With video, you can get studdering if the card can't send and receive data fast enough to keep up with higher bitrates. If you have a card that reads two meg a second and a video that plays at almost four, the card would probably be the bottleneck.

On my old phone (moto backflip). Using aps2sd and swap on the sd card I noticed a difference. I went from the stock card to an 8gb class 6 and then to a 16gb class 10 and noticed a difference each time.
Sent from my PG06100 using XDA App

Nitro3a said:
On my old phone (moto backflip). Using aps2sd and swap on the sd card I noticed a difference. I went from the stock card to an 8gb class 6 and then to a 16gb class 10 and noticed a difference each time.
Sent from my PG06100 using XDA App
Click to expand...
Click to collapse
Glad to hear this as I just ordered a 16GB class 10 Patriot card from amazon, was only 35.99 Beats the hell out of my current 4GB class 4

The class of a card is based on write speeds. It could still have bad access speeds which wouldn't do anything to help performance. Random access speed is the spec you care about for stuff other than taking pictures or video. I would look up tests people have done on the card before buying and get one with fast random access speed. There is no easy way to know other than benchmarks people have done. For example I have a 2gb class 2 card that works with a few emulated games(castlevania por in particular) that even a class 6 gives problems. Also it only matters when you are accessing your SD card of course.

I haven't noticed any increase in performance with a faster sd card. The only thing I noticed is a lot better is HD video recording. It can now record HD video without stuttering like before.

memory card for iconia tab 501

memory card for tablet
kingston 16 gb clasa 4 or kingston 16 gb clasa 6?
what to buy,difference in price.
whether it is sufficient clasa 4?

Many use class 4 and state they notice no difference is speed/performance. I have always gone with class 10, but I think it is just an old habit for me.

Which class card you buy depends on your budget and use. The class is supposed to refer to the speed of the card. You probably won't notice much difference between a class 4 and a class 6 for normal usage like taking photos, playing sd vids. If you want it to double as additional storage if you are on a trip for a camera, then you might want something higher, but even then that is probably only if you are taking very large photos or hd video. And don't forget that not all cards labeled as a specific class are not the same. I have a class 4 32gb and i haven't noticed a problem with my usage (just looked at some pics and video and played music).