I've been at it back and forth with Asus and SanDisk support now as I have yet to get my SanDisk Mobile Ultra 32GB UHS-1 card to work properly in the TF700T.
First card worked erratically and died completely, second card doesn't work at all.
The log of the tablet sais read errors but the card work perfectly in both PC and android mobile (x10 Mini).
Tablet sais it's DDR so I assume it uses DDR50 mode which is the most complicated mode to use due to the data timing.
Has anybody else got a UHS-1 card and had it work reliably in the TF700T ?
When mine was working I was getting sporadic read errors causing copy file from card to device to fail, and video to stutter.
(File copy was aborted by "paste files failed" message.)
These cards would offer much improved io performance vs a normal card and their improved latency should make em improve responsetime too.
I popped by a shop today and tested the UHS-1 card in a TF300 too. It got a hissyfit and went into a mount-loop.
Bought a SanDisk FCS-HS3 UHS-1 compatible USB3.0 reader to test the card on a pc and it performs great. (Well writes are within class 10 spec, and reads are fantastic.) See attached Atto run.
Also got a 32 GB Class 10 Lexar card to see how the TF700 likes it. No problems and everything seems smooth.
I have Sandisk Ultra Micro SD SDHC UHS-I 16GB Class 10 30MB/s and it's been working fine so far, it even rescued me when I needed a firmware update after bootloop, only with lower write speeds than SD, USB disk or internal memory (somehow I get somewhere near ~10/20 W/R on internal and ~20/10 on SD, pendrive, USB HDD etc., btw, seems a bit strange to me, as I would expect it the other way around).
d14b0ll0s said:
I have Sandisk Ultra Micro SD SDHC UHS-I 16GB Class 10 30MB/s and it's been working fine so far, it even rescued me when I needed a firmware update after bootloop, only with lower write speeds than SD, USB disk or internal memory (somehow I get somewhere near ~10/20 W/R on internal and ~20/10 on SD, pendrive, USB HDD etc., btw, seems a bit strange to me, as I would expect it the other way around).
Click to expand...
Click to collapse
That sounds like how my first card performed. Not fast.
I wish the SD test apps could show a graph like HD Tune on pc. To see how smoothly the card operates.
I know that any errors are masked by android and it resets card and continues thus making a card that hang all the time just appear slow.
tha_kreature said:
That sounds like how my first card performed. Not fast.
I wish the SD test apps could show a graph like HD Tune on pc. To see how smoothly the card operates.
I know that any errors are masked by android and it resets card and continues thus making a card that hang all the time just appear slow.
Click to expand...
Click to collapse
It is not about UHS-1 though, I get the same with USB pendrive or HDD.
This is the same test on the same card in a NON UHS-1 reader.
As you can see the readings are drastically different.
tha_kreature said:
This is the same test on the same card in a NON UHS-1 reader.
As you can see the readings are drastically different.
Click to expand...
Click to collapse
Sorry if I'm missing something, but on your screenshot I see 19 MB/s read and 9,5 MB/s write on average on your PC, so how is that different from what we were discussing as the speeds we were getting on the tablet?
Edit: I see your earlier post showing 40+ MB/s read speeds, but this was USB 3.0, wasn't it.
Edit: I forgot we were discussing microSD speeds. If you get 19/10 on your PC, this is in fact 50% more than I'm getting with microSD on the Infinity. It surely shows a major difference.
d14b0ll0s said:
Sorry if I'm missing something, but on your screenshot I see 19 MB/s read and 9,5 MB/s write on average on your PC, so how is that different from what we were discussing as the speeds we were getting on the tablet?
Edit: I see your earlier post showing 40+ MB/s read speeds, but this was USB 3.0, wasn't it.
Click to expand...
Click to collapse
Yes, USB3.0 with a reader using UHS-1. The UHS-1 is the most important part as that increases the bandwidth between controller and card and also reduces some delays on completion etc.
On the tablet I was getting good speeds and then pauses/breaks getting the average very low on old card. Log showed errors. New card doesn't even mount.
Edit:
It does however show how the tablet is trying to moungt it and what speed it talks to it, also what capability it has.
Edit2:
USB 2.0 can do 40 MB/s too btw, but usually max 30-35. The UHS-1 makes the difference.
For bigger data transfers I'm actually relying more on full-size SD card in the dock or USB disk. Which is of course a possibility only if one is carrying a dock..
---------- Post added at 05:56 PM ---------- Previous post was at 05:54 PM ----------
Yes, there is no question we have the lags to blame. My microSD writing speeds start with 30-35 MB/s for a few seconds (which is a lot more than I'm getting on my laptop with this card), then the lags make it drop even to 6 MB/s. So these are all the I/O issues we were discussing in so many threads here. Not much will come out of further benchmarks until we get an update (JB / kernel / smaller firmware fixes / hopefully anything)
d14b0ll0s said:
For bigger data transfers I'm actually relying more on full-size SD card in the dock or USB disk. Which is of course a possibility only if one is carrying a dock..
Click to expand...
Click to collapse
Untill the 17'th I won't have access to any docs...
Attached is a shot of the dmesg output from where it detects the card.
Notice it registers it as a ultra high speed DDR SDHC. DDR must mean it is considering using the UHS mode DDR50 which is a complicated mode requiring calibration. It also seems to assume/try NTFS first.
I can't see any attempts of uing card in normal SDHC mode after the UHS failing, nor any normal non DDR UHS modes.
d14b0ll0s said:
For bigger data transfers I'm actually relying more on full-size SD card in the dock or USB disk. Which is of course a possibility only if one is carrying a dock..
---------- Post added at 05:56 PM ---------- Previous post was at 05:54 PM ----------
Yes, there is no question we have the lags to blame. My microSD writing speeds start with 30-35 MB/s for a few seconds (which is a lot more than I'm getting on my laptop with this card), then the lags make it drop even to 6 MB/s. So these are all the I/O issues we were discussing in so many threads here. Not much will come out of further benchmarks until we get an update (JB / kernel / smaller firmware fixes / hopefully anything)
Click to expand...
Click to collapse
I'd like you to scour your dmesg log after one of those glitches, and also after inserting the card to see if there is any significant difference.
My card dipped in speed but usually did not log errors. I think the first retry is not logged if successfull.
tha_kreature said:
I'd like you to scour your dmesg log after one of those glitches, and also after inserting the card to see if there is any significant difference.
My card dipped in speed but usually did not log errors. I think the first retry is not logged if successfull.
Click to expand...
Click to collapse
I don't get any errors after (re)inserting the card apart from those from tntfs saying the boot sector is invalid, so it's quitting after finding out this is not NTFS (because it is FAT32 ;>).
Tell me what errors do you get specifically, so I could grep my logs looking for them.
d14b0ll0s said:
I don't get any errors after (re)inserting the card apart from those from tntfs saying the boot sector is invalid, so it's quitting after finding out this is not NTFS (because it is FAT32 ;>).
Tell me what errors do you get specifically, so I could grep my logs looking for them.
Click to expand...
Click to collapse
See my attached pic.
See how it identifys card ans ultra high speed ddr.
tha_kreature said:
See my attached pic.
See how it identifys card ans ultra high speed ddr.
Click to expand...
Click to collapse
Sorry, I missed the last post on the previous page.
Doesn't look good, I don't get any of these in my logs apart from the NTFS assumption, which might be the normal thing (a late attempt to solve the NTFS compatibility issues).
I would try sio if I were you.
Mine doesn't say anything about ultra speed DDR SDHC however, it only gives the "new high speed SDHC card" output..
I'm not sure what you mean by saying that it doesn't treat it as SDHC afterwards - where would you want to have it reported?
d14b0ll0s said:
Sorry, I missed the last post on the previous page.
Doesn't look good, I don't get any of these in my logs apart from the NTFS assumption, which might be the normal thing (a late attempt to solve the NTFS compatibility issues).
I would try sio if I were you.
Mine doesn't say anything about ultra speed DDR SDHC however, it only gives the "new high speed SDHC card" output..
I'm not sure what you mean by saying that it doesn't treat it as SDHC afterwards - where would you want to have it reported?
Click to expand...
Click to collapse
Your card works as it does not infact support UHS-1. It's probably one of the "Ultra" cards not "Ultra UHS-1".
The difference is a small U on the card with a 1 in it. (See attached.)
Sandisk has the same card in identical packaging, except for the UHS-1 support. The difference is drastic on PC, and apparantly catastrophic on TF700T and TF300.
See my logs attached.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
tha_kreature said:
Your card works as it does not infact support UHS-1. It's probably one of the "Ultra" cards not "Ultra UHS-1".
The difference is a small U on the card with a 1 in it. (See attached.)
Sandisk has the same card in identical packaging, except for the UHS-1 support. The difference is drastic on PC, and apparantly catastrophic on TF700T and TF300.
Click to expand...
Click to collapse
In fact, mine is not UHS-I, but regular SDHC, sorry about misinforming you, I was initially thinking about getting the one you got yourself and then misclicked on the auction, LOL, I can see it now, bummer! I think it's even class 4, not class 10 (how much slower can it be because of it?). My full-size SD in the dock is UHS-1 and it's been performing well (Sandisk Extreme 32 GB 45 MB/s class 10).
d14b0ll0s said:
See my logs attached.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
Thanks. Definately a non UHS card.
So far I've found or read about Sandisk Ultra in these flavour:
- Sandisk Ultra XXGB Class 6
- Sandisk Ultra XXGB Class 10
- Sandisk Ultra XXGB Class 10 UHS-1
- Sandisk Mobile Ultra XXGB Class 6
- Sandisk Mobile Ultra XXGB Class 10
- Sandisk Mobile Ultra XXGB Class 10 UHS-1
The packaging on my card sais SanDisk Mobile Ultra but the card sais only SanDisk Ultra. (First card said Mobile Ultra.)
It's really odd how there is always differences on pics I find.
tha_kreature said:
Thanks. Definately a non UHS card.
So far I've found or read about Sandisk Ultra in these flavour:
- Sandisk Ultra XXGB Class 6
- Sandisk Ultra XXGB Class 10
- Sandisk Ultra XXGB Class 10 UHS-1
- Sandisk Mobile Ultra XXGB Class 6
- Sandisk Mobile Ultra XXGB Class 10
- Sandisk Mobile Ultra XXGB Class 10 UHS-1
The packaging on my card sais SanDisk Mobile Ultra but the card sais only SanDisk Ultra. (First card said Mobile Ultra.)
It's really odd how there is always differences on pics I find.
Click to expand...
Click to collapse
Yeah, mine is not ultra, terrible miss-click. I will use it in the phone probably and will order UHS-I class 10, unless others report same problems as yours.
d14b0ll0s said:
In fact, mine is not UHS-I, but regular SDHC, sorry about misinforming you, I was initially thinking about getting the one you got yourself and then misclicked on the auction, LOL, I can see it now, bummer! I think it's even class 4, not class 10 (how much slower can it be because of it?). My full-size SD in the dock is UHS-1 and it's been performing well (Sandisk Extreme 32 GB 45 MB/s class 10).
Click to expand...
Click to collapse
Could you insert it and check the log?
See if it does anything different on it vs the other?
Unless it has any U on it it will probably only do standard SD speed of 50 MHz givingv 25 MB/s max datarate.
Related
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.
Hi guys
i recently received my Sandisk Class 4 16gb micro sd card, but im getting pretty slow speeds with it.
Its currently in FAT32 format.
When transferring files from my computer to the card via the usb cable, im getting 3mbps, which is much slower than what ive seen others get with a class 2 sandisk microsd card.
Also when i test the card using 'SD tools' in the app market it says it should have write 5.7, read 10.4, which is not what im getting and still slower than results ive seen others get with class 2 sandisk microsd cards.
I also have an old 2gb Verbatim card (with no class markings), which is currently in FAT format (not FAT32), that came free with an old phone, that seems very quick when transferring files, much quicker, and in SD Tools it gets - write speed 2mbs, read speed 17 mbps.
Questions -
What format should i set the card to maximize performance (not using app2sd)?
Is a smaller capacity card of the same class faster?
(is a class 4 8gb faster than class 4 16 gb?)
Is FAT faster than FAT32?
Is my card defective?
Should i return it for a class 2 as they seem to be faster?
Hope you can help
For starters, which of those 2 file system is really faster don't matter because you cannot use FAT16 on your 16GB card. FAT16 only supports up to 2GB.
Also, class 4 is suppose to be faster than class 2.
sounds like you got a fake Sandisk Class 4 16gb, a knockoff market imitation with low quality component
what is the actual speed test result of the write?
AllGamer said:
sounds like you got a fake Sandisk Class 4 16gb, a knockoff market imitation with low quality component
what is the actual speed test result of the write?
Click to expand...
Click to collapse
Thanks for the reply allgamer, I've seen many of your posts on these boards and your very helpful
My actual write speeds are 3mbps, when transferring from my pc to the phone via usb cable.
I got the card from play.com so I didn't expect it to be fake. Are there any other tests I could do to confirm its authenticity?
Should I try different file systems like ext2 or fat etc?
3MB/s for a class 2 card is pretty good. I don't what you can expect more from that.
I have an Kingston 16Gb Class 4 and the writing speed from pc -> phone is like 2MB/s, much slower then it should. But in SD Tools its shows 4 or 4.8 MB/s writing speed.
dukuletz said:
3MB/s for a class 2 card is pretty good. I don't what you can expect more from that.
I have an Kingston 16Gb Class 4 and the writing speed from pc -> phone is like 2MB/s, much slower then it should. But in SD Tools its shows 4 or 4.8 MB/s writing speed.
Click to expand...
Click to collapse
The card I got is a class 4, and being a san disk I expected better write speeds.
What is really confusing is why the 2gb card (with no class markings) I got free with an old phone is much faster at transferring files via usb despite it getting a much lower score in SD tools.
Can anyone explain that?
Hi, i bought some days ago an 8GB class 10 micro sd card, hoping it would speed up my phone (i was using app2sd+ with Kyrillo's ROM v7.1).
I didn't notice any diference compared to my old 4GB class 2 card, so i installed SD Tools app to test the speeds, and i realized all the cards i put in my phone get 4MB/s as the maximun write speed, i tried many different sd cards, class 2 and 10 and there's no difference. Then i tried the same cards in my girlfriend's Galaxy Ace and the speeds were much higher, 7~12 MB/s write speed.
I thought it was a rom problem, so i backed up with Titanium Backup and flashed a stock ROM (JPM), but the speeds remain the same (around 4 MB/s for writing), i also tried changing the buffer size from 128kb to 1024, 2048, 4096 with "SD Booster" and "SD Speed Increase" apps, but no good results...
Could my phone be faulty?
Is there any configuration i can try to make my sd card faster? any command line?
What are the speeds you reach with "SD Tools" and classes of your SD card?
Best Regards!
I'm not sure, but I think there's nothing you can do....
Mine is a 16GB class 6 and it's the same, whatever I try. Before had 8GB - was the same.
Whatever I wrote into the 'read ahead buffer'...
But maybe anyone else has an idea?
Try changing the buffer to 0 as sometimes that works.
Sent from my GT-I5800 using XDA App
dilzo said:
Try changing the buffer to 0 as sometimes that works.
Click to expand...
Click to collapse
TNX for the tip, but unfortunately SAME RESULT...
i also get the same speeds..
i think thats a bug with sd tools.
By the way has any one tried data2sd/apps2sd v3? do you face lags?
also do you people have SD or SDHC
I belive that sdtools has a bug. Or is seriously faulty. I have 16GB class 2 sdcard and sdtools claims that my read and write speeds are equivavlent to class 6 card (values range from 6.x/6.x to 8.x/7.x, write/read, respectively (depending on read_ahead_kb values). And I know for a fact that this really cheap sdcard does not have such performance. You can try antutu benchmark, free app on market, which provides a bit more accurate results plus you can select what to benchmark. My card gets 3.0MB/s read and 2.0 MB/s write with default buffer values. Which is more accurate than sdtools. Especially because disks (any kind) usually have higher read rate than write rate (because it is easier to read data than to write it and 'cause we usually perform much more reading than writing, so it is optimized for read operations).
mrvek said:
I belive that sdtools has a bug. Or is seriously faulty. I have 16GB class 2 sdcard and sdtools claims that my read and write speeds are equivavlent to class 6 card (values range from 6.x/6.x to 8.x/7.x, write/read, respectively (depending on read_ahead_kb values). And I know for a fact that this really cheap sdcard does not have such performance. You can try antutu benchmark, free app on market, which provides a bit more accurate results plus you can select what to benchmark. My card gets 3.0MB/s read and 2.0 MB/s write with default buffer values. Which is more accurate than sdtools. Especially because disks (any kind) usually have higher read rate than write rate (because it is easier to read data than to write it and 'cause we usually perform much more reading than writing, so it is optimized for read operations).
Click to expand...
Click to collapse
antutu give me 3.x and 4.x for write and read speed respectively!!
8gb class 10
That is odd. Do you have a card reader? Maybe you can bench from pc and see the results. I have only 2 sdcards, both class 2 and the results I get are to be expected from class 2 cards. There is also possibility that it is a low quality component. If you feel like it try to investigate, get cards info like serial, model and manufacturer and see what you'll discover. Nowadays people are selling everything claiming it to be a better than actually is. I remember reading tests regarding SD 's where they said that same card type from same manufacturer performed about 10 times worse just because one was.made in China and the other in taiwan, or something like that. I personally would do some research but it's up to you.
mrvek said:
That is odd. Do you have a card reader? Maybe you can bench from pc and see the results. I have only 2 sdcards, both class 2 and the results I get are to be expected from class 2 cards. There is also possibility that it is a low quality component. If you feel like it try to investigate, get cards info like serial, model and manufacturer and see what you'll discover. Nowadays people are selling everything claiming it to be a better than actually is. I remember reading tests regarding SD 's where they said that same card type from same manufacturer performed about 10 times worse just because one was.made in China and the other in taiwan, or something like that. I personally would do some research but it's up to you.
Click to expand...
Click to collapse
well i did a bench mark from laptop's card reader.. it was way over 18 mbps.. cancelled the benchmark in the process as it was taking too long.. but half way read speed was definitely above 18mbps.. Also my sdhc's manufacturer is transcend. I hope this company wont betray us!!
well, in that case it might have to do with phone configuration/programming. Maybe devs could figure out why the phone does not utilize full potential of the sdcard. Perhaps low ram, (relatively) "slow" cpu, something...
mrvek said:
well, in that case it might have to do with phone configuration/programming. Maybe devs could figure out why the phone does not utilize full potential of the sdcard. Perhaps low ram, (relatively) "slow" cpu, something...
Click to expand...
Click to collapse
Good point. Hope some dev is listening!!
I have the same problem.
Samsung Galaxy 3 GT-i5800, Android Froyo firmware v2.2 build XWJPL.
I tested with two class 10 microSD cards, quality ones, but got poor transfer rates.
card1: Transcend 8GB MicroSDHC Class10 (TS8GUSDHC10) - up to 20 Mb/s
card2: Samsung 8GB SDHC Plus Class10 (MB-MP8GA/EU) - Read max. 24 Mb/s, Write max 21 Mb/s
Samsung 8GB cl10 test result (SD Tools app): Write: 4.4 Mb/s; Read 5.1 Mb/s
The card write speed should be higher than 10 Mb/s
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).
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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!
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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?
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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
So I bought a Samsung EVO+ SDHC card on Amazon and I am trying to figure out if I got hosed. It is a UHS-1 card and is supposed to get write speeds up to 20MB/S, but I am getting 5-8... I have it mounted as an external card. I've tried 2 different speed test apps on Android. Do these speeds sound like what I should be expecting?
When I put the card in, I originally set it as internal, but the phone gave me a warning the card was slow (another not-so-good sign).
Should I try to return it to Amazon and just buy some place locally?
Link to item?
Sent from my XT1650 using Tapatalk
I bought this SanDisk Extreme 64GB MicroSDXC UHS-1 card about two weeks ago, working great! No speed warning when I set it as internal. Rated up to 90 MB/s, and I just measured 61.82MB/s Read & 55.87MB/s Write. Maybe you got a knockoff?
This is the one I got: https://www.amazon.com/gp/product/B0118LR9Z8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Which app did you use to test the speed? I am wondering if my issue was that I was looking at random write speeds instead of sequential. I found several references around the Interwebs that show similar performance. The faster speeds seem to be sequential writes..? Could that be my issue?
One of the apps I tried did identify it as an actual Samsung card, but perhaps it was a slower class card relabeled?
I used A1 SD bench.
I tried 2 different Evos and can Evo+ and the phone didn't like any of them.
I had to but a Pro+ for it not to contain about the card bring slow.
TheKaz said:
This is the one I got: https://www.amazon.com/gp/product/B0118LR9Z8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
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Note - the Samsung card is a U1, compared the SanDisk Extreme which is U3. Big difference, lol. Make sure to get a UHS-1 U3 or higher card to eliminate speed issues.