So here's a point of contention, I've been told by several people that if your phone can support "up to 64GB" Micro SD Cards for example, you should always use the next size down, i.e. 32GB rather than the maximum it can take, because manufacturers "over-sell" the device capabilities and using the highest advertised capacity can cause problems down the line.
In anyone's experience, have you found this to be true?
I've worked with mobile tech & computers for years and have never seen any practical evidence to suggest this is fact rather than fiction, but I want to get the internet's experiences as well to be sure.
i don't think so
i think it's ok
I have never had problems by using the maximum at such an indication with my phones/tabs.
When you are using an good and fast SD card, you shouldn't have problems.
Yeah no problem using max supported. If there was a problem then it wouldn't be supported...
I've never heard of anyone having problems with using the maximum size SD card compatible with your device. I don't know the differences between the classes or types of SD cards there are, if there is a difference or if it is the deciding factor in what size/type SD card you use. Maybe someone will enlighten us.. Ex: SD/SDHC/SDXC and class 4/10.
A quick Google search shows:
"SD, SDHC and SDXC are all variants of the SD (Secure Digital) format, that have been released in that order by the SD Association.
As requirements for higher capacities came in, SD cards have grown in capacity too (SDHC is SD High Capacity, while SDXC is SD Xtended Capacity). SDHC cards typically come in capacities between 4GB to 32GB. SDXC cards come in sizes of 32GB of higher, with a theoretical maximum of 2TB.
Backwards compatibility is built in, so if a camera has SDHC support , it will support standard SD cards too. If a camera or device has SDXC support, it will support SD and SDHC. These cards have speed ratings too; Class 2, 4, 6, 10 and so on, with Class 10 having the fastest read-write performance. "
Details here - en.wikipedia.org/wiki/Secure_Digital
Related
i've recently got my hands on a VOX/s710 phone
my last phone before this used micro SD cards, it was a nokia
when i try to put my nokia micro SD into my VOX, it doesnt recognize, but, as soon as i put it on a nokia, other phones like a palm, etc, it recognizes
is there a problem between nokia branded micro SD cards with HTC?
i tried another brand of micro SD and it worked perfectly
any ideas?
cheers
Initially I tried a NOKIA micro SD card with my Vox and it worked fine.
hum, tks for the reply
so no clues at what the problem might be?
guess if i dont resolve this, ill have to buy another micro SD card
May be, you give a try by formatting the card using a card reader from a Windows PC. That might help.
Yes, make a backup and format to FAT32 (also useful if you want to flash from sd card)! Then put your files back on the card and try again!
thanks for the tips
fortunately, i dont have any indispensable information on the microSD card, i didnt use it a lot, since it was a 1G card, and i had a 2G on my older nokia.
i'm going to try and format it and then post the result hopefully it will work
but since i dont have a memory card reader right now, im gonna try and put it on my old nokia, connect it to the pc and try to format it from there, or format it from inside the nokia phone.
ill figure out something
thanks again for the tips
cheers
=========
tks for the tip tryed it right now, and now its working fine
many thanks both of you for the help!
I have 2 GB microsd card installed. Is it possible to install a 4Gb card or more? Who tried? Does it support SDHC?
Funny thing, I've got an answer from htc support, they say 2Gb is the only possible amount supported
Katik said:
I have 2 GB microsd card installed. Is it possible to install a 4Gb card or more? Who tried? Does it support SDHC?
Funny thing, I've got an answer from htc support, they say 2Gb is the only possible amount supported
Click to expand...
Click to collapse
I dont know exactly how to do it search the forum, but i know that there is a thread that says that partion 4gb (using WM5torage that thread tells how to) and then you can use it.
the vox supports SDHC microSD up to 8Gb, found this in www.pocketpc.ch (will post the link l8 when back on my pc).
i'm using a sandisk SDHC 4Gb fat32 formatted, works perfect! i will buy a 8Gb soon and post the results here .
edit: http://www.pocketpc.ch/htc-s710/39075-8-gb-micro-sd-htc-s710-moeglich.html the forum is in german there....
remembered to post this note, after fomarting the sd card, it worked well
just another question though, you guys are talking about 4 and 8 gigs sd cards
doesnt having a much bigger sd card slow down the phone? i've heard of such rumours but never got the chance to tested myself, and since i'm willing to make a sd upgrade i would like to know if its better to stick with a 1 gig or 2 gigs sd card, or i can go ahead and get a 4 or 8 gigs?
cheers
so, finally i bought this fine 8Gb microSDHC from sandisk, and i works just perfect.
artilheiro.mz said:
just another question though, you guys are talking about 4 and 8 gigs sd cards
doesnt having a much bigger sd card slow down the phone? i've heard of such rumours but never got the chance to tested myself, and since i'm willing to make a sd upgrade i would like to know if its better to stick with a 1 gig or 2 gigs sd card, or i can go ahead and get a 4 or 8 gigs?
Click to expand...
Click to collapse
i never tried with a 1 or 2Gb card, so there i cannot say. but on the otherhand i did not remark an diffrence of speed with the 4 or 8Gb card, they're just as fast as usual (in cellular device or in pc with cardreader). the only thing i can say, is that cards from cheap(er) brands are always slower than cards from quality brands (such as sandisk, as example). and also SDHC cards should always be faster than 1 or 2Gb cards, because they have a newer controllers (not 100% sure about this point, i think i might have read that in c't).
i hope i could help a little bit...
Dang, 8GB cards work without driver patching? That is champion. I'll be ordering myself one soon.
Yep, can confirm 8gb card works fine, have had one in mine for some months now...
Now what about 16gb? was that article written before 16's were available even the sandisk site seems to be out of date saying nokias that are supposed to support 16's only support 8?
anyone actually confirmed 16's don't work?
Katik said:
I have 2 GB microsd card installed. Is it possible to install a 4Gb card or more? Who tried? Does it support SDHC?
Funny thing, I've got an answer from htc support, they say 2Gb is the only possible amount supported
Click to expand...
Click to collapse
well, i am using a Sandisk 4GB micro Sd without any problems.
@ zarn:
have a look at General discussion > Accessories > 16 and 32GB MicroSDHC test
JayRayMee.NL said:
16GB will be available in Q4.
32GB somewhere in the first half of next year.
Pricing unknown, but I guess that 16GB will have an intro price of something like € 100,00.
Click to expand...
Click to collapse
i guess we have to wait some time to test it
at work, some weeks ago, i discussed this with a dev. and he meant that from the hardware side it should be no problem, but maybe the driver needs to be updated. i'm not sure, but as i know the driver adds support for sdhc, no matter of the size of the card. he's not a sys dev, he does apps and branding, i'm only test-ex and advanved user, so correct me if i'm wrong (i'm still learning ).
edit: found following on http://www.wisegeek.com/what-are-sdhc-cards.htm
The new 2.00 specification should last a bit longer, as it allows SDHC cards to reach a maximum capacity of 32GB.
Click to expand...
Click to collapse
so i think, if the device supports that specification (and the vox does), it should support cards up to 32Gb.
and again some info about speed:
The SDHC specification 2.00 calls for cards to be classified according to the minimal sustained DTS as follows:
Class 2: minimum sustained DTS of 2MB/sec
Class 4: minimum sustained DTS of 4MB/sec
Class 6: minimum sustained DTS of 6MB/sec
SDHC cards are classified to guarantee a specific sustained DTS. This potentially saves consumers money, as flash cards are priced not only according to capacity, but also to speed. For example, if a product's maximum DTS is 2MB/sec, dishing out extra cash for Class 4 or Class 6 SDHC cards would be a waste of money. Conversely, devices that can utilize the 4MB/sec or 6MB/sec DTR (i guess the author meant DTS, kel187) will perform significantly better with Class 4 or Class 6 SDHC cards, respectively.
Click to expand...
Click to collapse
my 4Gb card is Class 2 and my 8Gb is Class 4. i did not recognized any diffrences in speed advantages, neither on the mobile nor on the pc. so the vox and my cardreader must be class 2 devices, what a pitty ^^
Hello!
I bought Kingston 16gb class 10 micro sdhc card and I tested it on my nexus one getting result 6mb/s and in unbutu getting same results. Both was directly pluged (Not Usb). I closed every running application in nexus one and I got same result. I also tested in different partitions and in ext2 I was getting little slower result than in fat32. But both were same or under 6mb.
Is there something wrong with the card or is it issue with nexus one that android 2.2 doesnt support class 10?
elkyur said:
Hello!
I bought Kingston 16gb class 10 micro sdhc card and I tested it on my nexus one getting result 6mb/s and in unbutu getting same results. Both was directly pluged (Not Usb). I closed every running application in nexus one and I got same result. I also tested in different partitions and in ext2 I was getting little slower result than in fat32. But both were same or under 6mb.
Is there something wrong with the card or is it issue with nexus one that android 2.2 doesnt support class 10?
Click to expand...
Click to collapse
please include where it was purchased, how much, and if there are any serial numbers/stamps on the card. there are known fakes in circulation (even brick and mortor retailers) fyi.
http://www.verkkokauppa.com/popups/prodinfo.php?id=1244 , bought for 101 euros. Serial in the card: SDC10/16GB N0206-001.AD00lF Taiwan.
ANd on adapter reads CHINA
wow thats really slow i have a 16Gb class 4 and i get 7 ~ 8 mb write speeds when the card is in N1 and connected with usb.
I would assume it's the card because as I and someone else stated above, get higher speeds with a lower class card.
As stated here:
It's my understanding that the "Class" simply refers to speed rating and thus should not effect compatibility. As long as the card supports the microSDHC standard and isn't any larger than 32gb it should work. You should also note however that in the past, vendors have claimed a higher class rating when the card did not actual perform that fast. I suggest buying from a trusted vendor with a good name.
32GB SD Card
Anyone tested the 32GB card, I know it's only class 2....
Android Class 10, SDHC3.0 compliant ?
elkyur said:
Hello!
I bought Kingston 16gb class 10 micro sdhc card and I tested it on my nexus one getting result 6mb/s and in unbutu getting same results. Both was directly pluged (Not Usb). I closed every running application in nexus one and I got same result. I also tested in different partitions and in ext2 I was getting little slower result than in fat32. But both were same or under 6mb.
Is there something wrong with the card or is it issue with nexus one that android 2.2 doesnt support class 10?
Click to expand...
Click to collapse
Class 10 should be supported, but they are usually SDHC3.0 card which is new I think...
I have a kingston class 10 as well, same issue, read speed is good but write speed is rated as 2gb, I tried to change the sector size to 4k and still the same.
For those thinking it's a fake card it is not! when I place the card in an adaptor I do 10MB write and close to 16MB read so this is a class 10.
I am not sure if it's the SDC tester app that is wrong or the phone
but since the phone behave fairly well compared to my class 4 card it could be the application. I will do some internal transfer tomorrow to see how fast they go
me too
P00r said:
Class 10 should be supported, but they are usually SDHC3.0 card which is new I think...
I have a kingston class 10 as well, same issue, read speed is good but write speed is rated as 2gb
Click to expand...
Click to collapse
Same card on my HTC Desire... same results... only 2mb/s write beside 15Mb/s read
gary.lavin said:
Anyone tested the 32GB card, I know it's only class 2....
Click to expand...
Click to collapse
See my comparison of Sandisk 16Gb vs Kingstonm 32Gb Class 4 card :-(
http://forum.xda-developers.com/showthread.php?t=830087
I just saw your thread in this forum after I posted mine in the other
Sorry
G.
How much does class speed matter for a smart phone. I was under the impression that it's mainly important for video capture and photography (when using a digital camera).
Sent from my DROID2 GLOBAL using XDA App
There is no requirement or restriction on this. Anything microSD or microSD HC will work. Recommended is to get class 2 or better card in order to achieve better speeds when copying stuff from/to phone via USB in disk drive mode.
However under 'anything' do not assume you should go and get the cheapest ever card you find on eBay or something - if card isn't functioning good, phone may experience wired behaviour like resets/etc. Get something recognizable (SanDisk, Kingston, etc).
Some video camcorders require certain class+ card in order to keep up with HD recording bandwidth required. Since D2G can't even shoot 720p, even slowest card will be ok. Not that 720p would have required more...
leobg said:
There is no requirement or restriction on this....
Click to expand...
Click to collapse
Leo are you certain it will take ClassIII memory? It makes sense just not sure the hardware did that.
to the OQ - If they come out with a newer class there might be a compatibility issue with the phone but XDA folks usually finds away to support them soon after via a patch.
Stay away from old legacy (Not Classed) SD cards. Go for the fastest and largest you can afford.
Android rely's much more on the SDcard than WM ever did.
the phone should support up to class 6 (or whatever is the highest class) just fine, class just means the speed of the card, the d2g supports any class micro sd card up to 32gb in size, so as long as you dont exceed that, youre fine. the speed of the card could be a factor for programs that cache to your sd card, youd want a faster sd card if you plan to have programs do that.
I am pretty sure the class is backwards compatible. Kinda like USB 2.0 and 1.0. Its going to use the fastest the device is capable of using. I think it's more the size limits (In the case of android, 32gb) that matters. Granted, I could be mistaken.
does anyone know the max sd card transfer speed of the pad, and the dock?
i am looking at a 128GB SDXC card (yes, its a lot, but this is replacing a dead laptop for the foreseeable future) , UHS-1 60mb/s, or a 45mb/s one. will the UHS card actually have any benefits in the dock, or simply when transfering data to it from the PC.
many thanks!
I'm currently running a Class 10 (200x) 32 GB SDHC in the dock, branded Dane-Elec. Runs fine. I don't know if it takes 32+ GB cards, though... And to be honest, while heavily dependent on what you actually do with it, for most purposes a high-speed card should suffice...
ishamm said:
does anyone know the max sd card transfer speed of the pad, and the dock?
i am looking at a 128GB SDXC card (yes, its a lot, but this is replacing a dead laptop for the foreseeable future) , UHS-1 60mb/s, or a 45mb/s one. will the UHS card actually have any benefits in the dock, or simply when transfering data to it from the PC.
many thanks!
Click to expand...
Click to collapse
I'm currently using two Sandisk cards:
- microSD class 10 30MBps SDHC Ultra (16GB)
- full SD class 10 SDHC Extreme 45MBps in the docking station (32GB)
They get better speeds than the built-in disk, but it is still not great. It seems to be about 15-18Mbps write for SD, 6Mbps write for microSD and 30-32Mbps read for both (as compared to 12/18 of the internal memory).
The fastest way of moving data still seems to be external USB HDD...
Hope this helps, haven't tried any other yet. I have tried both FAT32 and NTFS though. They seem to give similar results (I had no problems using NTFS on my SD card so far, which is a good sign).
d14b0ll0s said:
I'm currently using two Sandisk cards:
- microSD class 10 30MBps SDHC Ultra (16GB)
- full SD class 10 SDHC Extreme 45MBps in the docking station (32GB)
They get better speeds than the built-in disk, but it is still not great. It seems to be about 15-18Mbps write for SD, 6Mbps write for microSD and 30-32Mbps read for both (as compared to 12/18 of the internal memory).
The fastest way of moving data still seems to be external USB HDD...
Hope this helps, haven't tried any other yet. I have tried both FAT32 and NTFS though. They seem to give similar results (I had no problems using NTFS on my SD card so far, which is a good sign).
Click to expand...
Click to collapse
I haven't used an external drive yet, but I agree with the observation that the transfer speed is not optimal, no matter what card I plug in (I have transplanted a few I normally use in my DSLR just for testing; they are all fast cards, as you can imagine). I transferred several documentaries and a lot of photographs yesterday evening and it took ages, mainly due to the fact that the transfer process hangs up the entire device (!) regularly. It seems to happen after about 70 to 80 MB are read into (temporary?) memory and apparently are only then buffered out to the main storage. Let's hope a custom ROM can straighten this issue out...
Thanks. Given these figures, would you install apps on the main memory, if a 30mbps rated micro sd for best performance?
Sent from my LT26i using xda premium
ishamm said:
Thanks. Given these figures, would you install apps on the main memory, if a 30mbps rated micro sd for best performance?
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
In my case internal memory is faster than microSD. You don't really have the option, unless you play with the filesystem and mount your MicroSD on /mnt/sdcard instead of /Removable/MicroSD. In the Infinity /mnt/sdcard is just a folder within the internal memory by default (many apps use it though, so they had to arrange it this way). I don't think there is any reason to change this, as internal memory seems faster and that's whole 64GB of it (OK, maybe 56 available, but still a lot..).
Perfect thanks, I thought though that there were current issues with I/O speeds until someone could fix it in a Rom. Or has this been addressed in the new firmware?
Sent from my LT26i using xda premium
ishamm said:
Perfect thanks, I thought though that there were current issues with I/O speeds until someone could fix it in a Rom. Or has this been addressed in the new firmware?
Click to expand...
Click to collapse
Hopefully I could tell you in a few days, but honestly I don't think it has (can't try it out yet, as the firmware released is Taiwanese version, and I'm on the World-Wide).
The Infinity is not that far behind other new tablets or rather it's not only TF700's problem, see http://forum.xda-developers.com/showpost.php?p=28416635&postcount=2842
However, after changing the scheduler to sio and doing some tweaks (see my post on it: http://forum.xda-developers.com/showthread.php?t=1758160), it's running pretty smoothly (unless you want to do a lot of CPU-heavy jobs while having huge reads or writes in the background, in this case it can get frustrating, but.. there is no real alternative these days).
d14b0ll0s said:
Hopefully I could tell you in a few days, but honestly I don't think it has (can't try it out yet, as the firmware released is Taiwanese version, and I'm on the World-Wide).
The Infinity is not that far behind other new tablets or rather it's not only TF700's problem, see http://forum.xda-developers.com/showpost.php?p=28416635&postcount=2842
However, after changing the scheduler to sio and doing some tweaks (see my post on it: http://forum.xda-developers.com/showthread.php?t=1758160), it's running pretty smoothly (unless you want to do a lot of CPU-heavy jobs while having huge reads or writes in the background, in this case it can get frustrating, but.. there is no real alternative these days).
Click to expand...
Click to collapse
This. As i've ranted earlier, the new firmware provides fixes for camera issues, not for the I/O the TF700 so obviously suffers from. Having said that, it is not like the tablet in itself is useless as it is -- far from it -- but remains a mystery to me why they didn't spot this in advance (like with the Prime's issues with GPS and wifi), It seems like ASUS develops a device by letting several teams work onindividual components, and, when they get their specific part up and running, just put it together and relese it. I have a distinct feeling that neither device was actually and properly tested.
But, still, I'm pretty happy with the device overall.
I think you need to read this thread:
http://forum.xda-developers.com/showthread.php?t=1767755
From what I see my UHS-1 card that doesn't work is initialized as DDR which means the max speed for the TF700T µSD is 50 MB/s (as that is the only DDR speed).
The full size SD socket uses a USB host so the big question is is it USB 2.0 or 3.0!
All specifications says USB 2.0 for the dock, so I would assume that's correct, even for the TF700 dock.
Asus has finally responded that there is limited UHS-1 support in the µSD slot.
For now you are better off not trying UHS-1 in there. The may come up with a patch...
external memory limits
ishamm said:
does anyone know the max sd card transfer speed of the pad, and the dock?
i am looking at a 128GB SDXC card (yes, its a lot, but this is replacing a dead laptop for the foreseeable future) , UHS-1 60mb/s, or a 45mb/s one. will the UHS card actually have any benefits in the dock, or simply when transfering data to it from the PC.
many thanks!
Click to expand...
Click to collapse
Careful there with a 128gig card, I read somewhere that there is a 32 gig upperlimit on recognizing cards and sticks...
tho I do wonder if you formatted it into enough partitions it might read them all?
kokoPedli said:
Careful there with a 128gig card, I read somewhere that there is a 32 gig upperlimit on recognizing cards and sticks...
tho I do wonder if you formatted it into enough partitions it might read them all?
Click to expand...
Click to collapse
If the dock uses a sdhc compatible controller and simply exposes the card as a mass storage device for the system, then there is really no such limit. The SDXC cards which supports >32GB does so due to the SD's FAT specification not for actual addressing and such.
SDXC cards are accessible as SDHC but standard specifies ExFat as default filesystem. This may not work on units not compatible with ExFat, but a reformat will fix that. In the TF700T's case we have already seen users use 64 GB cards breaking that 32GB barrier.
We have also seen the TF700T mount ExFat, although it seems to fallback to NTFS.
The thing he should be carefull of is UHS in the µSD socket as it's still wonky.
In the dock I suspect a UHS card will simply be treated as a normal SDHC card, but UHS cards usually have better class speeds so may be a benefit even with the dock doing USB2.0 hosting.
Edit:
To back up my claims see here...
http://kb.sandisk.com/app/answers/detail/a_id/2520/~/sd/sdhc/sdxc-specifications-and-compatibility
I have a new TF700T with the Keyboard/Dock, and am wanting to pretty much max out its storage capacity in preparation for an upcoming trip (photography).
I realize that the Tablet itself requires MicroSD. I'm actually looking at this one:
Sandisk 64gb MicroSDXC Class 10
The Dock will obviously take a straight SD card, or a MicroSD card using the SD adapter. Is one of these ways any better as far as performance and reliability? I want to maximize read/write speeds.
I've also read enough threads here and elsewhere to see that this device is finicky with regard to which cards it'll work with, which formatting will be accepted and seen, etc. Any thoughts/experience in terms of which 64gb SD and/or MicroSD work best would be appreciated. And I understand that the higher the Class, theoretically the faster read/write speeds, but in an imperfect world, this isn't always the case, especially with this somewhat quirky device.
DLCPhoto said:
I have a new TF700T with the Keyboard/Dock, and am wanting to pretty much max out its storage capacity in preparation for an upcoming trip (photography).
I realize that the Tablet itself requires MicroSD. I'm actually looking at this one:
Sandisk 64gb MicroSDXC Class 10
The Dock will obviously take a straight SD card, or a MicroSD card using the SD adapter. Is one of these ways any better as far as performance and reliability? I want to maximize read/write speeds.
I've also read enough threads here and elsewhere to see that this device is finicky with regard to which cards it'll work with, which formatting will be accepted and seen, etc. Any thoughts/experience in terms of which 64gb SD and/or MicroSD work best would be appreciated. And I understand that the higher the Class, theoretically the faster read/write speeds, but in an imperfect world, this isn't always the case, especially with this somewhat quirky device.
Click to expand...
Click to collapse
I have one of those, formatted with exFAT. In the tablet it seems fine, and I can put video files on it and stream them off with no problem.
Not tried it in the dock.
If I unmount it clean from the tablet it is usually fine in my Windows 7 laptop; but occasionally it gets left in a dirty state and Windows will mount it read-only. I don't know if that's common with other cards.
However, in another thread I started a while ago I think we've found that the card can't be used in the tablet for recovery purposes. That may or may not matter to you.
Thanks for the reply. I went ahead and order the MicroSDXC card above, along with the full SD version of the same Class 10 card. I heard from another TF700T user for whom the MicroSDXC worked fine, so hopefully I'll be okay.
And thanks for the tip, but no, I won't need that card for recovery purposes.
Best,