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bought Kingston sdhc class 4 BUT....

Hi
I bought a Kingston 8GB SDHC Class 4 card today, I used a Class 2 before, anyway, I copied a lot of music (about 4GB) to the card from the computer but I don't even get close to 4MB/s only 1.38MB/s, have I done something wrong or is it a problem with the card?
thanks

If you're copying file to your phone over usb it will be capped at 2MB/s. It's the phone's fault, not your card. I bought a 16gb class 6 without knowing this and now I have to take my memory card out if I want to take advantage of the write speeds.

Gille1 said:
Hi
I bought a Kingston 8GB SDHC Class 4 card today, I used a Class 2 before, anyway, I copied a lot of music (about 4GB) to the card from the computer but I don't even get close to 4MB/s only 1.38MB/s, have I done something wrong or is it a problem with the card?
thanks
Click to expand...
Click to collapse
You may have been scammed. To know for sure, you should run the h2testw program against the new card. It's quite common for scammers to pass off 2GB cards as 8, 16, or even 32GBs. They can program the card to tell your PC that they are bigger than they actually are.
The h2testw script can test this by writing 8 1GB files (approximately) to your card.
Good luck!

16gb micro sdhc class 10, write speed 6mb/s?

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.

Micro SD - slow speeds, help!!

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?

All about Micro SD cards

In addition to not disturb the release threads, discussing the micro sd cards...
Any experience with mSD Cards, please write here: If you have problems with boot or other suggestions, please always give detailed specifications about the card (brand, size, class)
drgopoos started a thread where he explains everything about 32GB micro SDHC cards http://forum.xda-developers.com/showthread.php?p=15269669#post15269669
eBayers use this program to prove they have received a fake from a seller. http://sosfakeflash.wordpress.com/2...standard-in-detecting-usb-counterfeit-drives/
SD Tools - Info and Benchmark tools. With SD Tools you can check your microSD card information (Name, Date, MID, OEMID,...). You can check if your card is fake. (Check serial number and MID and OEMID).You can also benchmark sd card writing and reading speeds.
tzacapaca has a very informative post http://forum.xda-developers.com/showpost.php?p=12524948&postcount=60
(in this first post will also be a lot of editing - I'll try to link all the important posts from Forum about problems with the Micro SD cards)

Well, I have two microSD's.
1- Fake microSDHC & unknown class 8GB, : > worked only cotulla's system but too slow (the newer devs version doesn't work) it needed two hours for first boot, and the second time half hour. the newer devs versions will add about ~20MB Data and will stop. but cotulla's continues to complete the process witch means android boots and works, but slow.
2- Genuine, Transcend Class 10 8GB, : > Very Perfect! too Fast speed!, powerful... needs about ~1 minute or less first boot, & second time about ~10 Seconds! amazing!
I Very Recommended to buy the Transcend Class 10 once... it's very perfect very speed! also cheap, on amazon about $15.
microSDHC Transcend Class 10 8GB ***** 5 Stars for boot Android

yes.nwo i will list the cards that i used.
1.all kingston 's tf card is ok. all can successfully get into the system. the entering time depends on your card's speed. class2 is the slowest,but can be used.
2.most of Sandisk's cards cannot be used. althought you can format it by using the tools, it cannot get into the system. the mistake is that the memory module is different from the others. but Sandisk 's speed is faster than other cards,which have same class speed.
3.samsung and toshiba all OK, can fluently use, just class2 is also fast like class6...
4.some of the none name card can be used, like nokia's normal card,some cards that is given when you buy you mobile phone.
sorry for my poor english..

iPlasm said:
Well, I have two microSD's.
1- Fake microSDHC & unknown class 8GB, : > worked only cotulla's system but too slow (the newer devs version doesn't work) it needed two hours for first boot, and the second time half hour. the newer devs versions will add about ~20MB Data and will stop. but cotulla's continues to complete the process witch means android boots and works, but slow.
2- Genuine, Transcend Class 10 8GB, : > Very Perfect! too Fast speed!, powerful... needs about ~1 minute or less first boot, & second time about ~10 Seconds! amazing!
I Very Recommended to buy the Transcend Class 10 once... it's very perfect very speed! also cheap, on amazon about $15.
microSDHC Transcend Class 10 8GB ***** 5 Stars for boot Android
Click to expand...
Click to collapse
Indeed, Class 10 Transcend is very good. However, I still have to manage android boot optimization because a lot of installed apps are slowing the start-up process, even with the class 10 µSD...

ThePear said:
Indeed, Class 10 Transcend is very good. However, I still have to manage android boot optimization because a lot of installed apps are slowing the start-up process, even with the class 10 µSD...
Click to expand...
Click to collapse
Of course, that's right!
but about slow start-up process, second time is ok even restart android. but I could know why shouldn't first time be ok? also... it's not brand's problem.. maybe because SDHC are like that... or NAND?

thanks!
i just ordered the TS8GUSDHC10 on amazon for 13euros, will let you know if it works good

I have two of them, both working pretty good: 13M/s write and 18M/s read

You're Welcome Friends
but don't forget to reply after results

Strontium 8Gb works
I have a Strontium 8Gb HC card don't know other details but it works even with winmo folders.
Only all the android files should be in root.

Nice, now you can install (if you want) this app: SD Tools on HD Mini to see details of your card
and this on PC, to measure the speed Crystal bench mark (Portable Edition (zip) for Windows
Here's Manual
So if you have 2 or 3 cards, with this you can measure and compare and know what is better for you
Note that Random Write 4KB (QD = 1) is the most important when it comes to Android port (wich boot and runs on the Micro SD card)

installed SD Tools and these are the results
Manufacturer SD08G
Write speed 5.3MB/s
Read speed 14.3MB/s
Class ?

I tried installing android on 3 cards that i have, but failed.
The cards i used are:
-sandisk 2gb, the one that comes with the phone. (It is reported not to work so i dint care)
-no name 2gb sd card (no class info, but it seems to be class 2) which was provided stock with a nokia phone. I expected this to work since mooncmn had reported it working in the earlier thread.
-transcend 4gb class 2 card
I have formated all cards in sd formatter with full overwite and format adjustment off and then format fat32 on winxp and then i copy the files into phone. All this i do in "disk drive" mode. Then i remove the usb cable and load haret.
I tried out several versions of android as well:
-googlecode : I tried it multiple times on all 3 cards waiting minimum for 10 and upto an hr. When i reboot to wm i can see data.ext has stopped at 30mb on all cards irrespective of the time i let it load.
-munjeni and cm6 : both had the same problem as above, it stops at 30mb which is strange. in munjeni's version it stops at a point which i have attached the pic.
cortulla's port : This version actually worked but had to wait for atleast 2 hours first boot and even then it ran extremely slow, which was unusable.
As for base rom i'm using nsourm's latest WWE rom. Does this have an effect on android?
Ultimately i think all 3 cards are incompatible, ill try it out on other cards. Anybody have a suggestion for a 2gb card that worked for you?
Thanks
EDIT: Transcend 8gb class 2 worked for me!

Hi Everybody,
today I tested 3 SD cards. I stoped booting time of Android from run Haret to first Android "Lock Screen". Here is my result:
1) Kingston 8GB Class 10
Android booted in 1m 30s
1) Kingston 16GB Class 4
Android booted in 1m 28s
1) Sandisk 4GB Class 4
never booted
And... I solved all problems with Android on my HD mini, because I dropped my phone and is broken... I ordered new display from eBAY (20$), so I hope, will be functionaly.

[email protected] said:
1) Sandisk 4GB Class 4
never booted
Click to expand...
Click to collapse
My test:
Sandisk 8GB Class 4
Android booted in 1m 32s

pravarth said:
Ultimately i think all 3 cards are incompatible, ill try it out on other cards. Anybody have a suggestion for a 2gb card that worked for you?
Thanks
EDIT: Transcend 8gb class 2 worked for me!
Click to expand...
Click to collapse
You need to install new rom (including spl, radio...etc)... Allready confirmed by guys who instaled new rom that all forking perfect now after instaling new rom and radio!!!
RUU_Photon_HTC_Europe_1.36.401.1_Radio_Signed_32.2803.05.06_0.63.05.36_Ship.exe

Working perfect with RUU_Photon_Vodafone_SPA1.41.164.1_Radio_Signed_32. 2807.05.06_0.63.05.41_Ship.exe. Newer ROM and Radio

I've tested Transcend 8Gb class 10 for several days
my conclusion:
compared to my SanDisk 4Gb class 4 is the Transcend at least twice as SLOW in booting Android and apps, is LAGGING a lot and drains my batt very fast!
I'am very happy with the SanDisk

munjeni said:
You need to install new rom (including spl, radio...etc)... Allready confirmed by guys who instaled new rom that all forking perfect now after instaling new rom and radio!!!
RUU_Photon_HTC_Europe_1.36.401.1_Radio_Signed_32.2803.05.06_0.63.05.36_Ship.exe
Click to expand...
Click to collapse
I forgot to mention that i flashed back to the latest shipped rom for my region (RUU_Photon_hTC_Asia_India_1.36.720.3_Radio_Signed_32.2803.05.06_0.63.05.36_Ship.exe). Now android is running over that. They have the same radio version. Should i still switch to europe rom or is this one fine?

i just bought transcend 8gb class 10 sdhc and android work fantastic!!
with sd tools my resualts are:
Writing speed: 10.4 MB/s
Reading speed: 19.2 MB/s
is it good?

liorderei said:
i just bought transcend 8gb class 10 sdhc and android work fantastic!!
with sd tools my resualts are:
Writing speed: 10.4 MB/s
Reading speed: 19.2 MB/s
is it good?
Click to expand...
Click to collapse
Good?!?! That's simply cool!!

Problem with my micro SDs

Hi guys. Today I have received my new Sandisk Ultra microSDHC 16GB class 6 and I have tested it with SD Tools and the results surprised me much, it have clearly better reading speed, but the writing Speed like a class 4
Afterthat I tested the cards again with a card reader on my laptop, and the class 6 has ~20MB write/read speed. So the prolems comes from my phone, doesnt it? Im really confused now. Should I order a new card, and which one, class 4 or class 6?
thank you guys in advance

Try testing it in another phone and use SD-Tools again to see if the results are poor too.
As stated in the other thread regarding micro SD's I got myself a cheap 29 euro micro SD from Aldi and I'm getting decent results whilst benching it.
Now, the thing is, it seems every phone has its own way of handling those sd-cards sometimes. I bought the same micro SD as I have for my father, he has a HTC Sensation and it was giving nothing but troubles (the card sometimes wasn't recognized anymore, etc.), we also thought it was his phone.. Then he ordered a ScanDisk 32gb card for his HTC Sensation and all works again.

Connect your phone to the computer and format the micro sdcard to Fat32 with cluster size 32k. Backup your files before that. Also if your phone is rooted, search for SD booster in Market, install it, and change your sdcard cache size to 2048 KB or 4096 KB (whichever gives you better speed). Run SD tools again and check for improvement.
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