SD Card Incompatibility? - General Topics

I recently acquired a 128Mb TwinMOS Ultra-X SD Card, and was unable to get it to work on my XDA1.
After poking around, I found a thread that mentioned TwinMOS cards were incompatible with the XDA1.
Further investigation on other forums, I came to learn that the color of the lock switch on the SD Card is significant. I cannot find a definative source yet, but here and here mention that:
White lock tab - 'older' single-cell SD Card
Yellow lock tab - 'newer' multi-cell SD Card
and that the Xphone has some compatibility issues with SD cards with a yellow lock tab.
I'm beginning to wonder if it is the same for the XDA1, or if it's just the TwinMOS card I have that in incompatible.
Would you please be so kind as to post to this thread with the following information:
Your device (XDA1, XDA2, xphone)
Brand, capacity and locktab colour of your SD Card
and if it's ok, or if you face any compatibility issues.
Thanks!

SD Cards:
XDA1:TwinMOS Ultra-X 128Mb, Yellow tab, INCOMPATIBLE, drean
XDA1: Hagiwara 256Mb (HPC-SD256T), Yellow tab, Ok (0.35MB/s, 0.05MB/s), drean
XDA1: Sandisk, 128Mb, White tab, Ok, Rudegar
XDA1: Sandisk, 256Mb, White tab, Ok, Rudegar
XDA2: Lexar, 128Mb, ???, Ok (300M/s), mrg2003
XDA2: Panasonic, 256Mb, ???, Ok (600M/s), mrg2003
XDA2: Sandisk, 256Mb, ???, Ok (200M/s), mrg2003

maybe we should have like a pole thread about sd card speed and compatility
sandisk is pretty compatible but it's just about the slowest thing in the world
i use a sandisk 128MB with white lock
used to use a sandisk 256MB with white lock

I had considered a poll, but I couldn't quite figure out what catagories to form, since incompatible cards are sometimes from certain 'series' of one brand, or a certain capacity from another. The different devices too made it a whole lot more complicated.
Please post to this thread what SD card you're currently using, and I'll summarise them as they come in.

sd card speed / compatability
Japanese sd cards e.g. Panasonic seem to be the fastest. I have used to pocket mechanic to benchmark several, but the XDA2 electronics seem to be much slower than my ipaqs using the same make of card.
sandisk 256 SD
ipaq 700M/s
XDA2 200M/s
Lexar 128 SD
ipaq 800M/s
XDA2 300M/s
Panasonic 256 SD
ipaq 1200 M/s
XDA2 600M/s

i very much asume you mean
K/sec and not M/sec
otherwise it's pretty damm farst
the problem i have brougth up before
is that xda2 most likely use the xscale's internal
sd controller which is way slower then external chips
how ever the xda1 use an arm cpu which dont have
the internal sd controller so my bet is that it would be much faster

XDA1: Hagiwara 256Mb (HPC-SD256T), Yellow Tab, Ok.
Read: 0.35MB/s (2.4X)
Write: 0.05MB/s (0.3X)

drean said:
I recently acquired a I'm beginning to wonder if it is the same for the XDA1, or if it's just the TwinMOS card I have that in incompatible.
Click to expand...
Click to collapse
Just got a reply from TwinMOS, Singapore.
"Yes, actually there's some compatibility issues with our Ultra X Sd card, it cannot be use on a PDA & not recommended for mid range camera, it's more suitable for professional camera."

Related

SD size

I was wondering what the Max SD card size (2 ,4 , or 8 gb)I can use on the touch pro
16 gig
But remember... its not size that counts, its how you use it
Actually, its been tested for up to 32gb.
Well, as long as it's MicroSD you can use any size. But I don't think 32gb is available yet.
If I haven't missed anything that is.
you can use adapter for conect normal SD 32gb to microSD port
Officially supports upto 32gb....but I wouldn't put anything larger than 16gb on it.
Siara87 said:
you can use adapter for conect normal SD 32gb to microSD port
Click to expand...
Click to collapse
Yes. someones already done a sd to micro sd adapter hack to their touchpro and used a 32 gig sd card then. Too bad they cost 100 bucks for just a ribbon and card holder. id be tempted to use my spare back and make the same up.
http://pdaphonehome.com/forums/htc-touch-pro/121398-8gb-16gb-now-we-take-over-modded-tp-w-32gb.html#
My 32GB microSD works fine. Sandisk if you care.
techspec06 said:
My 32GB microSD works fine. Sandisk if you care.
Click to expand...
Click to collapse
Oh yea, were did you get a 32gb MICRO SD at. And how much was it.
Fist4Fun said:
Well, as long as it's MicroSD you can use any size. But I don't think 32gb is available yet.
If I haven't missed anything that is.
Click to expand...
Click to collapse
KD8DNS said:
Oh yea, were did you get a 32gb MICRO SD at. And how much was it.
Click to expand...
Click to collapse
I just find it funny to combine these 2 quote... it prove that people don't read. BTW, why do you need a 32GB on a PHONE?
pandaboyy said:
I just find it funny to combine these 2 quote... it prove that people don't read. BTW, why do you need a 32GB on a PHONE?
Click to expand...
Click to collapse
Why did the chicken go across the street?? BECAUSE IT COULD!
Power!! Showing off!! I want the power, too! (But not enough to do THAT to my fuze)
whatledog said:
Why did the chicken go across the street?? BECAUSE IT COULD!
Power!! Showing off!! I want the power, too! (But not enough to do THAT to my fuze)
Click to expand...
Click to collapse
you want Power? when I first got my Kaiser, I brought it back to Vietnam to show off... then I got kicked in the butt by my little cousin who own a Nokia Vertu Ferrari edition... The phone is not a touch screen, nor have all the functions as my Kaiser and he only have a 2GB card in it... but it cost him $11k
I really don't understand why 32GB... I only use 3GB on my 8GB microSD. if the phone graphic performance is as good as the Iphone, then I wouldn't mind having a big microSD card in it to play DVD movies... but not on this phone. The graphic drivers are just not good enough for it.
Well, I have a 16gb in my fuze, and everyone is impressed with the sliding KB, Tv-out, vga, BT Audio, gyrator2, scroll wheel, etc. Plus, I let my daughter at UNC-CH (Junior) take it for a few days, and it's a real guy-magnet, not that she really needs it, of course. (She normally uses a tilt)
BTW-- All in fun!!!!
32G for music and media man. That's why. My friend has an Iphone and thinks it's the jam. But my Fuze, once I find a 32G will put his Iclone to shame.
it doesnt matter if it got tested i have a 8 gb sandisk and my 4 gb get more pics and video then my 8 gb so idk wat to tell u
pandaboyy said:
I just find it funny to combine these 2 quote... it prove that people don't read. BTW, why do you need a 32GB on a PHONE?
Click to expand...
Click to collapse
One of the messages you quoted was responding to this:
Quote:
Originally Posted by techspec06
My 32GB microSD works fine. Sandisk if you care.
So I don't see how you think juxtaposing those quotes says anything about people not reading - other than yourself.
In response to your other question, I have 16GB on my phone, and wish that the phone had an easily accessible "external" microsd.
I use about half of the 16GB for work; the phone serves as a micro pc for short-term use. I also use it as a music-player. If there were a separate microsd it would be easy to interchange them for movies, music or other media.
I have a 16gb and it works fine. 32gb is the max.

SD to MICRO SD Converter Mod

Hi Everyone,
As it is taking so long to get real 32GB Micro SD's on the market I was wondering if anyone would be interested in buying a SD to MICRO SD converters.
This converters will not be just some wires solder together...but a converter that is nicely packaged.
Provide me with some feedback on the idea.
umm, how could that possibly work? you can't convert something so its smaller
Well maybe I did not state it correctly...
I mean a converter that will allow you to use a standard SD card into a micro sd slot...it will most likely be made of an external connector for the standard SD card then wire it down to a micro sd slot..
I work for an electronics manufacturing company and I may be able to convince my boss to do a test line of a couple...
But before I ask I wanted to see if there is any interest???
I have a Nexus one and really do not want to keep waiting for the 32GB Micro SD...then I do not want to pay $200.00 for it.
So i am thinking if people are interested a converter that can hold a standard SD that is no more that 4MM thick then you can shop around for a 32GB standard SD card for about $75.00 and have 32GB of storage for your nexus or other device...
Again just checking for input...
I'd would be interested, but I don't think there is going to be enough room to fit it and still put the back on!
tomfreay said:
I'd would be interested, but I don't think there is going to be enough room to fit it and still put the back on!
Click to expand...
Click to collapse
Hi tomfreay I was was thinking about that...it may have to be something that mounts on the outside of the back cover...if it can be made to be flush against the back cover...I envision a small "bump" on the back...
I use a clear silicone case for my phone so I do not think it will look to bad....
Or I can buy a Seidio extended battery and case..this should allow me to hide the converter inside...but I think it may look worse than just having a little standard SD size bump on the back of the phone...
I will ask my boss to explore one then take pictures of the finished product and post...
Someone has done this already with one of the convertors already available
Kman Gymrat said:
Someone has done this already with one of the converters already available
Click to expand...
Click to collapse
OK...so where can I buy one? And how much?
32GB Micro SD cards are available and have been for a month or two at least - check out http://www.google.co.uk/products?q=...esult_group&ct=title&resnum=3&ved=0CDgQrQQwAg
Can't see any kind of converter fitting well with the phone and still looking good. Also it would probably reduce transfer speeds to/from the card.
At this stage I can't say I'd recommend getting a 32GB Micro SD card for that matter. Better to stick with one that has a smaller capacity/higher data transfer speed if you don't want to slow down gallery/music apps etc - something between 4GB and 16GB.
See this post...
http://forum.xda-developers.com/showpost.php?p=6289541&postcount=101
joeearl13 said:
32GB Micro SD cards are available and have been for a month or two at least - check out http://www.google.co.uk/products?q=...esult_group&ct=title&resnum=3&ved=0CDgQrQQwAg
Click to expand...
Click to collapse
All 32 gig cards in the link you provided are out of stock.
Ya, if you don't know what you're talking about...
joeearl13 said:
32GB Micro SD cards are available and have been for a month or two at least - check out http://www.google.co.uk/products?q=...esult_group&ct=title&resnum=3&ved=0CDgQrQQwAg
Can't see any kind of converter fitting well with the phone and still looking good. Also it would probably reduce transfer speeds to/from the card.
At this stage I can't say I'd recommend getting a 32GB Micro SD card for that matter. Better to stick with one that has a smaller capacity/higher data transfer speed if you don't want to slow down gallery/music apps etc - something between 4GB and 16GB.
Click to expand...
Click to collapse
DUDE. Seriously. How many times do people have to be told that a PHONE will not be able to saturate a Class 2 (which has a MINIMUM of 2MB/s NOT MAXIMUM) MicroSD card. Classes, DO NOT MATTER when the phone can only access the card as fast as the chipset can. I had a Class 6 with Apps2SD and a Class 2 16GB with Apps2SD and there was NO DIFFERENCE even with the biggest movie file I could play.
Why the crap would you think that less than 1 inch of copper would slow down the transfer rate to anything you can see?? GIVE. ME. A. BREAK. I have 2 METERS of USB cord AND a 2 inch USB cord hooked up to a portable harddrive, and they have IDENTICAL speeds with the same hardware, why would you be able to tell the difference on a phone where that is not even close to being a bottleneck.
Listen, this is important: SD Card Class will NEVER be a bottleneck for any media on our Nexus Ones.
Ya, true; my converter looks terrible, but it fits under a very nice looking Casemate Vroom Case perfectly I would totally recommend one if you're going to get a MicroSD to SD.
Hi Everyone,
I have posted some pictures of my SD to MicroSD Converter and how it looks once it is installed.
Not bad, would be tempted by it if I needed a lot of storage.
well, if we gonna make our n1 bigger.. is that possible to make raid of two 32GB SDHC cards?
reddog said:
Hi Everyone,
I have posted some pictures of my SD to MicroSD Converter and how it looks once it is installed.
Click to expand...
Click to collapse
Nice Job. DocRambone was going to try this with the 3200mAH battery and cover but I dont know if he was successful.
The custom back-cover that comes with it should have room for this.
ps: Can you post the pics in the OP so its easy to find, thanks.
britoso said:
Nice Job. DocRambone was going to try this with the 3200mAH battery and cover but I dont know if he was successful.
The custom back-cover that comes with it should have room for this.
ps: Can you post the pics in the OP so its easy to find, thanks.
Click to expand...
Click to collapse
Hi Britoso..I was think about putting out the money for the 3200mAH battery...but then I found the case for it was too big...
The mod that I did is something that I think a lot of people can live with..its not ugly..the crystal case fits...and the grip of the phone has changed a little..I find it feels a little better.
Forgive my ignorance I have been on this site for several years now and still do not know everything...what do you mean by "OP"..set me straight and I will place the pictures there..
To All...
Again with this mod the cover slides off like it should...I put a small slit in the cover for the flex cable...and placed protective tape on both sides of the flex cable to prevent damage.
So at the most I just have to buy a new back cover and return the phone to OEM condition.
Oh I did shaved the battery a little by the MicroSD slot area...
If anyone is really interested in this converter let me know...like I said...$200.00+ for a 32GB Mirco SD card...I have seen them selling for $395.00..no way I say.
This mod ran me $82.00 for the 32GB standard class 10 card and $35.00 in parts.. Grand total of $117.00 for massive storage...I say the little bump on the back is worth it..phone can quickly be restored to OEM..
Maybe in 1.5 years from now when 32GB MicroSD cards come down to earth....I will get one..then I will just use my 32GB Class 10 Standard SD in a HD camcorder...
If it fits inside the battery cover it will be safer from movement, dust, drops etc.
OP= Original Post, the first post
You can also Add "Mod" to the title, need to go into the advanced edit mode for that.
britoso said:
If it fits inside the battery cover it will be safer from movement, dust, drops etc.
OP= Original Post, the first post
You can also Add "Mod" to the title, need to go into the advanced edit mode for that.
Click to expand...
Click to collapse
OK..its done..thanks for the lesson..
andjohn said:
DUDE. Seriously. How many times do people have to be told that a PHONE will not be able to saturate a Class 2 (which has a MINIMUM of 2MB/s NOT MAXIMUM) MicroSD card. Classes, DO NOT MATTER when the phone can only access the card as fast as the chipset can. I had a Class 6 with Apps2SD and a Class 2 16GB with Apps2SD and there was NO DIFFERENCE even with the biggest movie file I could play.
Why the crap would you think that less than 1 inch of copper would slow down the transfer rate to anything you can see?? GIVE. ME. A. BREAK. I have 2 METERS of USB cord AND a 2 inch USB cord hooked up to a portable harddrive, and they have IDENTICAL speeds with the same hardware, why would you be able to tell the difference on a phone where that is not even close to being a bottleneck.
Listen, this is important: SD Card Class will NEVER be a bottleneck for any media on our Nexus Ones.
Ya, true; my converter looks terrible, but it fits under a very nice looking Casemate Vroom Case perfectly I would totally recommend one if you're going to get a MicroSD to SD.
Click to expand...
Click to collapse
If this rant is true, you make me feel a lot better for buying a class 2 16gig card.
andjohn said:
DUDE. Seriously. How many times do people have to be told that a PHONE will not be able to saturate a Class 2 (which has a MINIMUM of 2MB/s NOT MAXIMUM) MicroSD card. Classes, DO NOT MATTER when the phone can only access the card as fast as the chipset can. I had a Class 6 with Apps2SD and a Class 2 16GB with Apps2SD and there was NO DIFFERENCE even with the biggest movie file I could play...
Click to expand...
Click to collapse
BTW, "class" on a (micro)sd card is for measuring _write_ speed only. Hence playing a video will test precisely nothing relating to it's class rating.
And yes, the N1 can saturate the write speed on a Class 2 card _very_ easily.
Anyone still looking for an adapter. I found this:
http://www.ameri-rack.com/APA-TFC1m.html
They sell this directly for around $24 + shipping.

SD Card Rip-Off (Kingston)

EDIT: RESOLVED! Tested on different hardware and results are very different: Sequential Read @ 20MB/sec; Sequential Write @ 12MB/sec.
I bought a Kingston 16GB Class 10 card from ebuyer.com and it is no faster than my original Kingston 16GB Class 2 card. So I contacted Kingston support and guess what they said? "Please note that means the minimum read speed have to be with the class 10card at least 10MB/s". Thats £80 down the drain - WTF!!!?
The SD Card Association (www.sdcard.org) states that "Speed Class and UHS Speed Class provide the constant speed necessary for video recording by designating a minimum writing performance". I have pointed this out to Kingston and am now awaiting a response.
So regardless of the often reported compatibility issues with Desires, I suggest that you look elsewhere for your speed fix.
SD Cards and speed tests have been covered a countless number of times on the forum, i dont understand why you went out and bought a class 10 for a htc desire and assumed you would get blistering speeds from general use
My speed tests have been carried out in Windows on my PC. My point is less about how it works on the Desire and more about how it is almost identical in performance to a Class 2, and also Kingston's crappy attitude.
That said, I use RCMixHD and some of the Rom is stored on the card so yes, I did hope to see some benefit.
Do some research before you buy. Complaining afterwards it not beneficial to anyone.
Ever thought of the possibility that you bought a fake card?
Sent from my HTC Desire using Tapatalk
Zhypr said:
Do some research before you buy. Complaining afterwards it not beneficial to anyone.
Click to expand...
Click to collapse
I am truly confused by your response!
The card does not perform in accordance with the advertised standard. The manufacturer then mis-quotes the standard. So I decide to inform other people who might make the same mistake.
In what way is that not beneficial?
Sibbi said:
Ever thought of the possibility that you bought a fake card?
Click to expand...
Click to collapse
If it had been bought from eBay or second hand then maybe I would have. But ebuyer.com is a long standing and reputable supplier and secondly, Kingston haven't suggested it as a possibility and prefer to suggest that the performance is acceptable.
PinkySlayer said:
I bought a Kingston 16GB Class 10 card from ebuyer.com and it is no faster than my original Kingston 16GB Class 2 card. So I contacted Kingston support and guess what they said? "Please note that means the minimum read speed have to be with the class 10card at least 10MB/s". Thats £80 down the drain - WTF!!!?
The SD Card Association (www.sdcard.org) states that "Speed Class and UHS Speed Class provide the constant speed necessary for video recording by designating a minimum writing performance". I have pointed this out to Kingston and am now awaiting a response.
So regardless of the often reported compatibility issues with Desires, I suggest that you look elsewhere for your speed fix.
Click to expand...
Click to collapse
Google the lot number on it i bet its fake.
this is a good read http://www.bunniestudios.com/blog/?page_id=1022
Which kernel is your desire running as i recall there being patched kernels to increase sd card speeds by almost 3x. Not too sure if it is a bug fix or an enhancement.
PinkySlayer said:
The SD Card Association (www.sdcard.org) states that "Speed Class and UHS Speed Class provide the constant speed necessary for video recording by designating a minimum writing performance". I have pointed this out to Kingston and am now awaiting a response
Click to expand...
Click to collapse
That's not quite all of the story - the class is the minimum writing speed you should get in absolutely ideal conditions - i.e. one large file on a completely unfragmented card. In the real world, you may well get lower speeds, especially if your card is nearly full and/or you are writing many small files.
I've been using SanDisk 16GB Class 2 cards in both my Desires for months, and they've performed just as well as my Transcend 8GB Class 6. There's no way on this planet I'd buy a Class 10 card to stick in a phone - as far as I'm concerned they are really for the semi-professional DSLR/HD Video market.
Regards,
Dave
foxmeister said:
That's not quite all of the story - the class is the minimum writing speed you should get in absolutely ideal conditions - i.e. one large file on a completely unfragmented card. In the real world, you may well get lower speeds, especially if your card is nearly full and/or you are writing many small files.
I've been using SanDisk 16GB Class 2 cards in both my Desires for months, and they've performed just as well as my Transcend 8GB Class 6. There's no way on this planet I'd buy a Class 10 card to stick in a phone - as far as I'm concerned they are really for the semi-professional DSLR/HD Video market.
Regards,
Dave
Click to expand...
Click to collapse
My testing us carried out under such ideal conditions, using Crystal Disk Mark, using one large file, on freshly formatted partition using 4, 8, 16 and 32 cluster sizes. The Wikipedia page also states that the write speed should be achievable on fragmented drives, but I'm still only achieving 7MB/s write.
Sent from my HTC Desire using Tapatalk
PinkySlayer said:
I am truly confused by your response!
The card does not perform in accordance with the advertised standard. The manufacturer then mis-quotes the standard. So I decide to inform other people who might make the same mistake.
In what way is that not beneficial?
If it had been bought from eBay or second hand then maybe I would have. But ebuyer.com is a long standing and reputable supplier and secondly, Kingston haven't suggested it as a possibility and prefer to suggest that the performance is acceptable.
Click to expand...
Click to collapse
Excuse me, I misread. Class certainly indicates write speed. From Wikipedia 'The Speed Class Rating is the official unit of speed measurement for SD Cards, defined by the SD Association. The Class number represents a multiple of 8 Mbit/s (1 MB/s), and it measures the minimum sustained write speeds for a card in a fragmented state [10].'
I would demand a new item as advertised or your money back.
I truly am shocked at some of the hostile responses from some members here!
I thought the idea of XDA was to help each other not to use it as a portal to vent some anger at some poor person!
Sound like they have grossly mis-sold the card there! I get that speed on the phone itself with a class 6 card (also a kingston btw).
I would be very suprised if it is a fake from ebuyer!
Phil
philje123 said:
I truly am shocked at some of the hostile responses from some members here!
I thought the idea of XDA was to help each other not to use it as a portal to vent some anger at some poor person!
Sound like they have grossly mis-sold the card there! I get that speed on the phone itself with a class 6 card (also a kingston btw).
I would be very suprised if it is a fake from ebuyer!
Phil
Click to expand...
Click to collapse
I have to admit, I was a bit disappointed by the response too. So thanks for injecting a bit of common sense.
A|ex said:
Which kernel is your desire running as i recall there being patched kernels to increase sd card speeds by almost 3x. Not too sure if it is a bug fix or an enhancement.
Click to expand...
Click to collapse
I am aware of this issue and I have been using a "read ahead" fixed kernel for a while. But the problem is not with the Desire specifically, as the card under-performs in a PC too.
Juggalo_X said:
Google the lot number on it i bet its fake.
this is a good read http://www.bunniestudios.com/blog/?page_id=1022
Click to expand...
Click to collapse
That's an interesting read, thanks. Kinston asked for the serial number and they didn't say it was fake, so I see no reason why it would be (and it probably performs too well to be a fake!).
PinkySlayer said:
The Wikipedia page also states that the write speed should be achievable on fragmented drives, but I'm still only achieving 7MB/s write.
Click to expand...
Click to collapse
Then Wikipedia is wrong! Not wholly unusual for Wikipedia either.
http://www.sdcard.org/developers/tech/speed_class/
If I were you, I'd also test again using a different card reader and/or PC before assuming it's the card at fault. If you are getting 7MB/s it's certainly not far off class 10 minimums (which makes it less likely to be a fake IMHO), but you also need to ensure that the bus you are testing over can actually sustain higher speeds.
Regards,
Dave
I bought a kingston class10 16gb card and I must say I'm really impressed with the data rates. around 12Mb/sec writing. (haven't tested read yet => is there a special utility app to perform this test straight on the phone ?)
foxmeister said:
Then Wikipedia is wrong! Not wholly unusual for Wikipedia either.
http://www.sdcard.org/developers/tech/speed_class/
If I were you, I'd also test again using a different card reader and/or PC before assuming it's the card at fault. If you are getting 7MB/s it's certainly not far off class 10 minimums (which makes it less likely to be a fake IMHO), but you also need to ensure that the bus you are testing over can actually sustain higher speeds.
Regards,
Dave
Click to expand...
Click to collapse
Yes, that is what Kingston have now suggested too. They have dropped their claim that the Class rating covers only the read speed and have also offered to replace the card directly. It is entirely possible that my internal card reader is the issue so I will have to find another device to test it on.
phentex said:
I bought a kingston class10 16gb card and I must say I'm really impressed with the data rates. around 12Mb/sec writing. (haven't tested read yet => is there a special utility app to perform this test straight on the phone ?)
Click to expand...
Click to collapse
I tested on a PC as I do not know what the capabilities of the Desire are, i.e. can it actually read and write at over 10MB/s. But yes, there are a couple of utilities in the Market, one called SD Card Speed Tester.
PinkySlayer said:
I tested on a PC as I do not know what the capabilities of the Desire are, i.e. can it actually read and write at over 10MB/s. But yes, there are a couple of utilities in the Market, one called SD Card Speed Tester.
Click to expand...
Click to collapse
when transfering from a computer to the phone (which is mainly why i bought this card), i get 12Mb/sec data rate write. I just tested with the sd card speed test on my phone, and i get W=3mb/s, R=4mb/s, which is clearly much slower than what i get when transfering from my computer. I'm thinking android has a lame way of accessing the sd card....
phentex said:
when transfering from a computer to the phone (which is mainly why i bought this card), i get 12Mb/sec data rate write. I just tested with the sd card speed test on my phone, and i get W=3mb/s, R=4mb/s, which is clearly much slower than what i get when transfering from my computer. I'm thinking android has a lame way of accessing the sd card....
Click to expand...
Click to collapse
In Android, my Kingston 16GB Class 2 card achieves 4MB/s W and 15MB/s R with SD Card Speed Test.
I also test with SD Card Tester, a 100MB file achieves 3MB/s W and only 2MB/s R whereas a 3MB file achieves 5MB/s W and only 1MB/s read.
All very erratic. That's why I don't test within Android.
RESOLVED! Kingston had suggested that these new Class 10 cards were exceeding the capabilities of the i/o device so I tested the card on different hardware at work and the results are very different:
Sequential Read @ 20MB/sec;
Sequential Write @ 12MB/sec.
It is a shame that Kingston had to begin by denying that the card was even capable of these write speeds as this could have been resolved much sooner. But credit where it's due, this is a stonkingly quick memory card!
Thanks to all who contributed.

Is this a good sd card?

Hey guys I need more storage on my desire (I still use the class2 sd card it ships with ) I found this card seems cheap for a class 10 so I was wondering if anyone knows how reliable it is. Here's the link
http://www.scanmalta.com/eshop/components/32gb-storage-options-sdhc-class-10-flash-memory.html
it wont even fit into your Desire.. you need e Micro SD not SDHC..
hope this helps.. dont forget to click the thanks button xx
lol thanks man didn't even realise xD
!PANDA said:
it wont even fit into your Desire.. you need e Micro SD not SDHC..
hope this helps.. dont forget to click the thanks button xx
Click to expand...
Click to collapse
Just for the record - You are right that it won't fit into the desire and that he needs a MicroSD, but the reason is because the link he posted is for standard Secure Digital (SD) card which of course is bigger, SDHC means "secure digital high capacity" and SDHC cards are 4GB or bigger, and I am sure your card is SDHC too.

Samsung 32gb Class 10 water+shock proof for $29 no tax/shipping

Samsung microSD High Speed 32GB MB-MSBGA/US Memory Card
cheapest place i found it other then the ebay listing is $35
http://www.ebay.com/itm/Samsung-mic...9&campid=5335869999&PID=1225267#ht_4520wt_940
Make the most of your digital devices, like your mobile phones and digital cameras, with the help of a quality Micro SD memory card. Featuring the latest 3Proof technology, your content will be safe from water, shock and even magnetic fields. Adding to its premium offering is the super fast transfer speeds of 24MB/s and choice of Card Class (4, 6 and 10), which is an important consideration when pairing it to a digital camera. So, whether it is saving pictures, phone numbers or short movie clips, this memory card is built to maximise your capabilities while minimising the space it occupies. What else could you want?
Features:
Safeguard content with shock / water proof technology
Chic design adds sophistication
Enjoy faster transfer times at 24MB/s
Reduce possible damage from magnetic fields
Class 10
Specification
Capacity : 32GB
Dimension : 15 x 11 x 1mm
Weight : Approx 0.5g
Operating Voltage : 2.7 ~ 3.6V
Speed Rating Speed (read) : 24MB/s
Speed (write) : 13MB/s
Speed Class : Class 10
Just a heads up when purchasing memory cards from ebay/other online retailers.
http://forum.xda-developers.com/showthread.php?t=1727546
Normally i would agree, but this is from beach camera's official ebay account...
waiters said:
Normally i would agree, but this is from beach camera's official ebay account...
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True, but can never be too safe (Newegg's counterfeit CPU incident as well as Amazon). And you never really know till you benchmark the product as there has been some shady sites that have sold "authentic" but failed QA products. Meaning products that were suppose to be thrown away but have been hauled/stolen.
Nevertheless this is on slickdeals right now so it should be good.
But yeah pretty good card, benchmarked here:
http://forum.xda-developers.com/showpost.php?p=27874472&postcount=16
http://www.ebay.com/itm/Ultra-Mobil...gital_Camera_Memory_Cards&hash=item460511ed26
What are the chances that it isn't fake?
kishke said:
http://www.ebay.com/itm/Ultra-Mobil...gital_Camera_Memory_Cards&hash=item460511ed26
What are the chances that it isn't fake?
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Are you looking for an SD card for cameras?
If you're looking for one for your phone look for microSD(HC)
OH ops didnt notice its a big one :X tho maybe we could get 1 of those for my dad's birthday.
UZ7 said:
But yeah pretty good card, benchmarked here:
http://forum.xda-developers.com/showpost.php?p=27874472&postcount=16
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Issue with that test, if you look at the test, it says path sdcard, not external sd card. He ran the test on his internal memory.
nest75068 said:
Issue with that test, if you look at the test, it says path sdcard, not external sd card. He ran the test on his internal memory.
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Yeah I overlooked the 2nd benchmark because the Samsung Galaxy S3 paths things differently, so I'll try to upload another benchmark but they're pretty much 1~3mb/s lower in range. (USB Adapter being 20read/11write).
I'm on CM9 on the Skyrocket and /sdcard/ and /mnt/sdcard/ are the same thing showing the external storage for me and /emmc/ and /emmc/external_sd/ (embedded multi media card) shows the internal storage.
Not sure how ICS ROMs do it but under /sdcard/ I dont see an /external_sd/ and it just goes directly to the files so thats where it gets a little confusing. So the pathing of the ICS, CM9 and Galaxy S3 are a little different.
replaced my samsung 16gb class 6 with this card - just got it in the mail today.
first thing i noticed, was my phone took like a second to do the media scan (i have 14gb of data on it)
with my sandisk class6 card, it would take like 15 seconds.
this one was almost instant, it was crazy
Speed tests:
done almost 10 times:
write: 10mb/s almost ever time, maybe once it was 9.8
read tests: 20-21mb/s

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