[Q] Question about Micro SD cards - T-Mobile myTouch 4G Slide

I was looking to buy a 32Gb micro sd card but I am not sure what class this phone will take. I was thinking about buying a class 10 but I wanted to know if anyone else has any experience?

homegeek said:
I was looking to buy a 32Gb micro sd card but I am not sure what class this phone will take. I was thinking about buying a class 10 but I wanted to know if anyone else has any experience?
Click to expand...
Click to collapse
I'm using an adata 32gb class 10 card and it flies. Check on newegg for cards if you haven't already. The price seems to be dropping on these cards recently. What was once 120 dollars is down below the 100 mark or less!

I am running a 16 gig class 4 Sandisk card, and it runs well.
Played with the camera some, and recorded some video to test it out. Haven't had any problems there.
Also loaded some movies to the sdcard, and played them both on the device and through a video cable to a t.v., didn't see any issues so far - but I haven't had a lot of time to dig into it. Currently only tested .avi video using mobo player.
No problems transferring data back and forth through the device to the sdcard when plugging into the computer. Loads up right away as an external drive (windows machine), drag and drop, edit files on the device, etc... no problems.
I have a pny class 10 (8 gig) I could compare it to if you're interested, otherwise i'll get around to that eventually anyway.
Is there a god benchmark app to use on the device itself to compare memory cards?
(I know these card capacities are way below what you're asking, but I don't have any 32 gig cards to throw at the question yet - may be a while before I get any)

Blue6IX said:
I am running a 16 gig class 4 Sandisk card, and it runs well.
Played with the camera some, and recorded some video to test it out. Haven't had any problems there.
Also loaded some movies to the sdcard, and played them both on the device and through a video cable to a t.v., didn't see any issues so far - but I haven't had a lot of time to dig into it. Currently only tested .avi video using mobo player.
No problems transferring data back and forth through the device to the sdcard when plugging into the computer. Loads up right away as an external drive (windows machine), drag and drop, edit files on the device, etc... no problems.
I have a pny class 10 (8 gig) I could compare it to if you're interested, otherwise i'll get around to that eventually anyway.
Is there a god benchmark app to use on the device itself to compare memory cards?
(I know these card capacities are way below what you're asking, but I don't have any 32 gig cards to throw at the question yet - may be a while before I get any)
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Click to collapse
Search "SD Tools" on the market man, very interested to see your results
Sent from my HTC Sensation 4G using XDA App

This reference might come in useful http://unrevoked.com/rootwiki/doku.php/public/sdcard_data_charts

What's the cheapest place to buy cards? Usually I've bought from Amazon. I always have thought it was cheaper than Newegg. Thoughts?
Sent from my A500 using XDA Premium App

rorytmeadows said:
What's the cheapest place to buy cards? Usually I've bought from Amazon. I always have thought it was cheaper than Newegg. Thoughts?
Sent from my A500 using XDA Premium App
Click to expand...
Click to collapse
I always trust Newegg with my SD cards. They have a good selection at good to very good prices and their customer service is Eggcellent! (sorry, I couldn't resist )
Everytime I've had an issue with any of their cards (only 2 times now), they promptly remedied the situation to my satisfaction.

itsomaryo said:
Search "SD Tools" on the market man, very interested to see your results
Sent from my HTC Sensation 4G using XDA App
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Click to collapse
I can most definitely say that the class 10 shows a significant speed difference on the phone then the class 2 and 4 cards i've been swapping in and out.
I'll be picking up some more class 10 cards from different manufacturers to do a speed comparison like I did with the Nook Color, but for the moment I feel completely safe in recommending a class 10 card over a lesser class.
On the Nook Color, we were running CM7 from the MicroSD card itself, and learned that the operating system depends on small-block read/write moreso then large-block read/write in order to run well.
It was hard, at first, to figure out what was making a difference, but after tons of people posted up test results using a specific benchmark software we narrowed it down to SanDisk brand cards, specifically the class 2/4 cards in the largest capacity you could find as the winners of quality.
All other manufacturers were focusing on large-block read/write speeds to use as their metric for quality, while SanDisk paid extra attention to small-block read/write to give a balanced card.
This made a lot of sense from a general manufacturing standpoint for the majority of businesses out there. Digital cameras/camcorders and file storage were the main usage of flash memory cards - and that kind of stuff is all large chunks of data. Streaming video, transferring large files or groups of pictures has little to nothing to do with small-block read/write.
When it became evident that SanDisk was the only manufacturer focusing on the actual specifications we needed to rely on to run an operating system from the flash memory card, the general recommendation became to say get a SanDisk over in the Nook Color forums here at XDA.
From the research i've done in that direction, carrying it forward here, i'm finding that small-block read/write has little impact on the proper running of this phone. We aren't running the operating system from the memory card, like we were there, and the information transferred back and forth is in greater chunks.
Generally speaking, and before I can conclusively state anything, PNY looks like they are going to be our recommendation here for this phone. I say this not to make that recommendation now, but to challenge people to prove that wrong.
PNY has built their business around speed based on large-block read/write capability for their flash memory. They were my general recommendation before my Nook Color experiences for that reason.
My class 10 PNY card (8 Gig) blows away everything else i've got in this phone so far. I've run a couple class 4 SanDisk (16 Gig) a class 2 SanDisk (16 Gig) and 5 different class 4 SanDisk (8 Gig) cards in this phone so far.
I don't have conclusive speed test data correlated from the phone yet, but it's coming. (There's a ton of stuff i'm testing all at once on this phone, I simply don't have time for it all even with the long days i'm putting into it)
Right now the new ROMS starting to filter out are getting put on my testing schedule, as well as constant video testing with as many televisions as I can come into contact with using several different cables. The GPS / A-GPS issue is my biggest front-and-center concern at the moment, and until that's hammered out to my satisfaction I won't be able to sit down and speed test the memory cards in the phone within a variable-controlled testing environment.
Give me a few weeks to get the rest of it worked out and i'll be able to sit down and make side-by-side speed test comparisons of all the cards I have, and that'll give me some time to get more cash together to get some decent class 10 cards to use in the testing.
Right now, my class 10 card seems to perform the best. Can anyone refute this, or substantiate it with their own results?

If you do get a 32GB, the Lexar 32GB Class 10 is an excellent choice. I've done extensive research before purchasing mine off of newegg ...
The card is solid and has impressive read/write speeds that can't be touched to date. If you google it, you should be able to find some comparisons as I did. (Note: It may not show up on the first page of results...I remember going through a lot and typing different words when researching...)
Advice: DO NOT BUY THE PIECE OF CRAP ONES OFF OF ?BAY. THOSE ARE PIECE OF JUNKS FROM CHINA AND MOST ALL FAKES. THEY ARE 2GB CARDS WITH A PROGRAM HACK TO HAVE IT READ AS 32GB. ANYTHING MADE IN CHINA, STAY AWAY. WE ALL KNOW THAT...
THE LEXAR IS REPUTABLE AND IS MADE IN KOREA, WHICH IS THE BEST OF THE BEST IN CHIP / MEMORY, PERIOD. WELL LCD'S TOO...
FYI: I'm not one to fall for second best when I could enjoy having the best of the best. Lexar 32GB Class 10 is the way to go.
homegeek said:
I was looking to buy a 32Gb micro sd card but I am not sure what class this phone will take. I was thinking about buying a class 10 but I wanted to know if anyone else has any experience?
Click to expand...
Click to collapse

don't get a 32g class 10 patriot card unless they fixed them
the one i got in january keeps corrupting data on my phones but no other devices.

iunlock said:
If you do get a 32GB, the Lexar 32GB Class 10 is an excellent choice. I've done extensive research before purchasing mine off of newegg ...
The card is solid and has impressive read/write speeds that can't be touched to date. If you google it, you should be able to find some comparisons as I did. (Note: It may not show up on the first page of results...I remember going through a lot and typing different words when researching...)
Advice: DO NOT BUY THE PIECE OF CRAP ONES OFF OF ?BAY. THOSE ARE PIECE OF JUNKS FROM CHINA AND MOST ALL FAKES. THEY ARE 2GB CARDS WITH A PROGRAM HACK TO HAVE IT READ AS 32GB. ANYTHING MADE IN CHINA, STAY AWAY. WE ALL KNOW THAT...
THE LEXAR IS REPUTABLE AND IS MADE IN KOREA, WHICH IS THE BEST OF THE BEST IN CHIP / MEMORY, PERIOD. WELL LCD'S TOO...
FYI: I'm not one to fall for second best when I could enjoy having the best of the best. Lexar 32GB Class 10 is the way to go.
Click to expand...
Click to collapse
Half the stuff in your home is prolly from China.
Anywayz, I know that the Class 10 cards actually do give better speeds. My question is does it matter for our phones? Is the SD card a bottleneck for the Doubleshot?

_atlien_ said:
...
Anywayz, I know that the Class 10 cards actually do give better speeds. My question is does it matter for our phones? Is the SD card a bottleneck for the Doubleshot?
Click to expand...
Click to collapse
Yep, positively.
I had a PNY class 10 8-gig card, specifically advertised as "high speed data transfer" and it was.
I had a bunch of SanDisk class 4 - 8 gig cards, and some SanDisk class 4/2 - 16-gig cards laying around from the memory speed tests I did on the Nook Color.
Whereas the Nook Color requires manufacturing attention to small block read/write data paths, the MT4GS requires large block read/write data paths to be more robust on the physical circuitry of the card.
I restore half a dozen to a dozen CWM backups on my phone a day. There was a noticeable shortness in the time spent restoring a full backup from the class 10 PNY card.
What we learned last time, and the links are in the bottom line of my signature, is that SanDisk cards are ideal for the Nook Color, because that particular manufacturer makes a more balanced card. For the ( for now ) niche market of running an android installation from a MicroSD card, either you get a SanDisk card or you go home crying.
This phone, or any phone, is just the kind of device that the class 10 MicroSD cards are targeted at and made for. Large block read/write transfer applies to things like:
-Streaming media (movies, music)
-Playing media from the MicroSD card
-Playing most games, at least the higher-end graphics-wise ones.
-Transferring large chunks of data...like recovery images, folders of pictures, movies, etcetera and so on...
When the phone tries to grab stuff from the MicroSD card, it usually does so in large enough grabs where it falls into the category of large block file transfer.
I was trying to do memory tests on this phone with benchmarks that can be compared like the threads in my sig, but for the moment i'm too wrapped up in other stuff for this phone.
Until I can throw blocks of time at testing, and only testing in one sitting I can't control the variables I can influence enough to validate my results to myself, let alone to share here. Meanwhile, i'm keeping an eye on this thread, so keep asking questions and experimenting!

Nice, Blue! I'm going to pick up a class 10. I am specifically wondering about gallery rendering. I use my MT4GS for looooooooots of photos and videos. I open the gallery constantly and it takes a while to pull all of the content. I currently have a 32gb class 4. I'll report back my findings.
Sent from my MyTouch 4G Slide using xda premium

_atlien_ said:
Nice, Blue! I'm going to pick up a class 10. I am specifically wondering about gallery rendering. I use my MT4GS for looooooooots of photos and videos. I open the gallery constantly and it takes a while to pull all of the content. I currently have a 32gb class 4. I'll report back my findings.
Sent from my MyTouch 4G Slide using xda premium
Click to expand...
Click to collapse
Yep, you'll notice a sizeable difference going from a class 4 to 10, even though you didn't mention the manufacturer.
I really, really wanted to use the stock gingerbread gallery from Google, but it's just not as good with loading pictures as the stock HTC gallery is.
I've compared them both using the same memory cards, and while the Google gallery is good using a class 10 card (PNY in my case, 8 gig) anything less and it won't load all the pictures the first, second, or even third time you kick it up.
I like the Google gallery better, because it means I can eliminate the sense frameworks altogether on the MT4GS, but it just can't compare to how well and correctly the sense gallery works.
Shame, looks like i'm stuck with sense, but i've not been loading anywhere near the number of pictures you are talking about.
I am eagerly awaiting whatever results you care to share moving up to a 32G class 10 card - let me know what manufacturer you end up going with.
I want one, but it's just so hard for me to justify the cost of it against other things I have to spend my money on, since I have about a dozen MicroSD cards here sitting in front of me.
I just broke my class 10 PNY card yesterday - pulled the cord from the pc before it said ready to eject, while it was trying to make it ready to eject. Now the card won't format in any device or compter I put it in - dammit.
Maybe I can convince myself to buy one if it seems like it made a drastic difference to you, since I don't have any class 10 cards left now.

It all depends on what card you get. I recommend both 32GB cards in my signature.

I have a pny 32gb class 10. $50 at bestbuy few weeks ago. So fare i have no lag or issue.

LEXAR 32GB class 10. My QuickPic gallery opens up instantly. Load times are negligible. The photos are just there! I moved up from a SanDisk 32gb class 4.
SD Tools measures it as writing at 10MB/sec.
Sent from my MyTouch 4G Slide using xda premium

I wanted a balanced card for everyday moderate use. Based on Blue6IX's comment in post # 14, I decided to go for SanDisk. Observing that the MT4GS came with a SanDisk Class 4 card and the speed was sufficient for my moderate use, I just upgraded the size with a 32GB SanDisk Class 4 card.

Since I changed my signature, I'm running a Wintec 32GB class 10 card in my Doubleshot and an ADATA 32GB class 4 card in my Vision. Both cards run pretty well, especially since I have the real A2SD running in the Vision.
I also recommend PNY's cards. Best Buy has those on the shelves if you don't want to wait for UPS to deliver it.

I just ordered a 64GB card from Sandisk. It's supposed to come in Tuesday. If it works I'll post back here.
Delivered via candygram for Mr. Mongo.

Related

micro sd memory card class

i know that there are different classes of cards: 2, 4, or 6 but what are the main idifferences and will it effect my phone in anyway if i get a 2 compaired to 6?
Heard that Class 4 is the optimum for the Nexus one...anything more than class 4 it wont make a lotta difference.
I can tell you I have an 8g Sandisk Class2 and an 8g Transcend Class6. The Sandisk blew it away in speed comparisons. Not all SDs are equal. I wouldn't have believed it but I tested it myself. Yo have to have root and adb but there is a speedtest on Cyanogen's forums. I tested each 3 times and averaged. The Sandisk was faster by a considerable amount. I also think the Class4 would be optimal and would spend a bit extra on the Sandisk.
I just got a 16gb Patriot Class 2 to replace the 4gb Class 2 stock sd card. My response the first time I opened Gallery "OMFG HOLY CRAP". Instead of the typical 3-5 second load I am at about .5-1 second. Write speed is amazing. This card is just fan-damn-tastic.
I can say I tried a Class 6 16gb off-brand prior to this (my dog ate it) and it had none of the characteristics of this current card.
So for my money, before you consider Class, consider Brand / Quality. The better quality cards will always outperform the lesser cards. If you are worried about the Class (transfer/write speed) then get a good brand and higher class...but for me, the Class 2 Patriot is amazeballs.
snlu178 said:
I just got a 16gb Patriot Class 2 to replace the 4gb Class 2 stock sd card. My response the first time I opened Gallery "OMFG HOLY CRAP". Instead of the typical 3-5 second load I am at about .5-1 second. Write speed is amazing. This card is just fan-damn-tastic.
Click to expand...
Click to collapse
hhmm, never heard of Patriot.
I've used SanDisk and Transcend before.
My current one is the stock one that came with the phone.
However, with your "OMFG HOLY CRAP" emotional outburst I'm thinking of researching that brand
I really want a 32 gb microsd card for the n1. Yeah I know its kinda overkill but it would be my card for life really. I just wish there would be a day when I could walk into a best buy and pick one up.
i used patriot ram in my computers, good brand, didnt know they made sd cards, i think ill grab one, right now i have 4gb scandisk class6 seems fast and smooth
I have this one coming...
http://www.ocworkbench.com/2010/KINGSTON/Kingston-Class10-16GB-SDHC-Review/p2.htm
I have no idea if there will be anything worth forking out over for a class 10 card but since my wife has been belly-aching for speedier storage in her video camera I figure I got nothing to lose. Doesn't wow me in the phone it can find a home in her camera. Somebodies got to take one for the team....
ChillRays said:
I really want a 32 gb microsd card for the n1. Yeah I know its kinda overkill but it would be my card for life really. I just wish there would be a day when I could walk into a best buy and pick one up.
Click to expand...
Click to collapse
http://www.sandisk.com/about-sandis...disk-first-to-ship-32-gigabyte-microsdhc-card
They will come. In fact, a webshop here home has put it up for pre-sale allready and has a unconfirmed arrival date June 1st.
price will be here $180 dollars +/-. But will be way cheaper in the states.
http://www.komplett.no/k/ki.aspx?sku=594226
(site is in Norwegian)
The thing that bothers me about Sandisk (besides the price) is even on their own website they don't list what speed class the cards are. On Amazon I can only find class 2 cards. What's up with that? Maybe class 2 would be enough but I'd be more comfortable with class 4 or 6. Do they even make them in that speed?
ChillRays said:
I really want a 32 gb microsd card for the n1. Yeah I know its kinda overkill but it would be my card for life really. I just wish there would be a day when I could walk into a best buy and pick one up.
Click to expand...
Click to collapse
I want one too, but not at their current going rate of $200.
I'll probably end up picking up a 16gb one soon since the 32gb ones aren't in any hurry to get cheaper.
Gallery69 said:
The thing that bothers me about Sandisk (besides the price) is even on their own website they don't list what speed class the cards are. On Amazon I can only find class 2 cards. What's up with that? Maybe class 2 would be enough but I'd be more comfortable with class 4 or 6. Do they even make them in that speed?
Click to expand...
Click to collapse
On amazons search I typed in 16 GB class 6 micro SD and it pulled some up along with a passel of other sd cards.
The class # classification has merit behind it. But unfortunately cheap manafacturers are abusing the system.
I bought a sandisk 16gb class 2 card not too many weeks after it appeared on the market as the first 16gb card. Never have i wanted for more speed. Songs load up instantly in the music player and the gallery has no lag at all. Don't fall victim to high class # claims. Just go with a manufacturer that you know and trust. For me that's sandisk.
im already sending back my first class 10 card.bought it from newegg but had to get kingston to replace.had problem with corrupt data and making my nexus go loopy.kingston replaced it without any hassles.
krabman said:
I have this one coming...
http://www.ocworkbench.com/2010/KINGSTON/Kingston-Class10-16GB-SDHC-Review/p2.htm
I have no idea if there will be anything worth forking out over for a class 10 card but since my wife has been belly-aching for speedier storage in her video camera I figure I got nothing to lose. Doesn't wow me in the phone it can find a home in her camera. Somebodies got to take one for the team....
Click to expand...
Click to collapse
hey guys i stay in dubai and i have searched the computer vendors and they only have sandisk class 2 cards and nokia's class 4 cards so if i buy nokia's class 4 mu 44 will it function properly if i want to install app2sd?
Not sure why i cant find it on the bestbuy website but i know its still there at the store bc i seen them there again just a few days ago, i bought mine a few months ago but anyways i found a PNY 4 gig class 6 HC-->high capacity i think, its in the camera section and sells in the black and red pack, not the black and gold one they also have. I bought mine regular price $22.99 which isnt too bad for not buying it on the web. It made my G1 songs and pics load blazing fast and ive since replaced my stock nexus card and have noticed a night and day difference on certain things pertaining to sd. just thought id share what i thought was a good deal. Later, veritas
also wanted to add that ive prolly reformated with parted literally between 100-175 times and really no slower rates on anything and barely a smidge shaved off the top

MicroSd Card Size Limit

Sorry if this has been answerd alread..I have search google and here with no luck...Just purchased the Gtab (currently charging) and I want to get an sd card 8 16 or 32 .. Would like to get a class 6 16gb but don't want to pay 70 to find out it will not support the full 16..
Sent from my T-Mobile myTouch 3G Slide using XDA App
I am looking at getting the. A-Data micro SDHC 16gb Class 6..from compusa if that helps
Sent from my T-Mobile myTouch 3G Slide using XDA App
Gtab will support up to 32gb microsd. so yes 16gb will work just fine, this is what I am currently using as I don't want to pay around $100 for a 32gb card. I am using a 16gb class 4 (Patriot memory) and it works really well, I have also tested a 16gb class 2 (SanDisk) and I really don't see any difference in the feel or performance. I assume that higher class would be faster data transfer but haven't had any issues with a class 2 or 4 yet (I keep my music library on SD2).
I purchased a couple of those from NewEgg. That manufacturer has given me NOTHING but problems with their SDHC cards.
Just an FYI
xBANGx said:
I am looking at getting the. A-Data micro SDHC 16gb Class 6..from compusa if that helps
Sent from my T-Mobile myTouch 3G Slide using XDA App
Click to expand...
Click to collapse
They also have the Patriot Class 4 might just go with that 30 cheaper....
What were the problems you were having with the a-data?
Sent from my T-Mobile myTouch 3G Slide using XDA App
I have an OEM 32GB Sandisk microSD, and it works just fine in the device (so far).
As for ADATA, I have a relationship with them now which I will pass on... in 2008, my wife had gotten me a Class 6 16GB SDHC by ADATA, it had a "lifetime limited" warranty. Last July, I started using it pretty heavily in my Pandgital Novel, a LOT of remove / reinserts as I was testing mods on it. It quickly disintegrated (literally, the outer case fell apart - I have never seen anything like it).
So, I called them. Several times. At first they weren't going to honor the warranty as they claimed it was unusual wear and tear. But, I was persistent and slightly irate at points ("I will never buy from you again, and neither will anyone in Slatedroid!") and they eventually caved and gave me an RMA. It was a long process but my replacement card is now on its way to my home. So, in the end, they did honor the warranty but "the squeaky wheel gets the oil", as the saying goes.
Very insightful..Thanks for the replies..Won't know till I am there.Might just get a 32gb and be done with it...At work and can't wait to get off so I can root this thing...
Sent from my T-Mobile myTouch 3G Slide using XDA App
Just a reminder (its been pointed out in this forum and many others), but you're wasting your money on a "faster" class micro sdhc card for use in a g-tablet. The higher class cards are all with respect to WRITE speeds. You also need special hardware to take advantage of the faster write speeds. Usually fast writing hardware is only found in expensive digital SLR cameras. If your device doesn't mention the ability to make use of the faster write speeds then a class 2 card will perform identically to a class 6 card, etc.
I am 95% sure that Adata makes the cards that Micro Center sells cheap, under their name.
With that in mind, I have bought many MicroSD(HC), SD(HC), and USB flash drives over the years from them, and had a few fail. However, they have a lifetime warranty on them too, and all I have to do is take it to the store, and they replace it on the spot. No receipt, nothing.
They don't have a 32GB MicroSDHC card yet, but I am eagerly waiting for them to so I can get one. Best they got for now is a 16GB for $24.
Like roebeet mentioned... nothing but failure after failure on all of them. Lifetime warranty or not, it's not worth the hassle returning it, copying data, etc..etc..
I guess, it all depends on if your time is worth more to you then a few dollars more for a "name brand" SDHC card that won't fail after a few months.
Size of card.
I answered this 3 weeks ago. The limit is 32GB, and my Sandisk works well on my stock gTablet. I bought the micro card locally at a Verizon Wireless store. No other retailer in the Philadelphia area carried a 32GB micro card, not even on their Web sites. I have audio and video files on the card; no hiccups when playing same.
--
Tom
64GB microsd limt
According to the manual (gttp://w w w .viewsonic.com/assets/104/20736.pdf sorry can't post URLs yet) on p. 54:
"The G Tablet currently supports up to 64GB micro SD cards. It
is recommended that the G Tablet be used with at least a 32GB
micro SD card to ensure the best user experience."
I've been using a 32GB SanDisk class 2 which seems to be working well.
64GB microsd...
/whistles
So has anyone taken the plunge and actually tested out a 64?
usafle said:
So has anyone taken the plunge and actually tested out a 64?
Click to expand...
Click to collapse
Try to find one. I did and failed completely. 64GB SD and CF, yes. But no micro I could find anywhere. I got a couple of 16s from Amazon, and almost filled them with media (left room for a backup folder on each) and I am going to rotate them.
Here's a 32GB Class 6 for only $56 http://www.mwave.com/mwave/SKUSearch_v3.asp?px=PW&scriteria=AB02429
It would be nice to know if the gtab supports SDXC as well as SDHC. What say you Viewsonic?
Supposedly there is no real distinction between SDHC and SDXC 3.0 specs. Hardware wise it is the same. Other OSes (Android?) should be able to support SDXC with support drivers. This would mean any current SDHC device can be SDXC with a software update. SDHC won't support SDXC 4.0 specs (which isn't final yet) which features higher data transfer rates. That is according to wikipedia at least...http://en.wikipedia.org/wiki/Secure_Digital
I don't believe micro SDXC cards exists just yet.
I still don't understand why manufacturers aren't using full size SD cards, they're cheaper and with tablets the size they are, a full size SD won't add much to it. It would save everyone a lot of money.
japhule said:
Supposedly there is no real distinction between SDHC and SDXC 3.0 specs. Hardware wise it is the same. Other OSes (Android?) should be able to support SDXC with support drivers. This would mean any current SDHC device can be SDXC with a software update. SDHC won't support SDXC 4.0 specs (which isn't final yet) which features higher data transfer rates. That is according to wikipedia at least...http://en.wikipedia.org/wiki/Secure_Digital
I don't believe micro SDXC cards exists just yet.
I still don't understand why manufacturers aren't using full size SD cards, they're cheaper and with tablets the size they are, a full size SD won't add much to it. It would save everyone a lot of money.
Click to expand...
Click to collapse
^ This. On an iphone sized device, sure uSD makes a decent savings size. On a 7+ inch tablet not so much. I wouldn't mind playing around with some USB SD readers and seeing if they work. If so you might be able to fit one somewhere in the chassis. There is the USB port, just need space to solder to the leads and add a hub and/or reader.
bobtran said:
Gtab will support up to 32gb microsd. so yes 16gb will work just fine, this is what I am currently using as I don't want to pay around $100 for a 32gb card. I am using a 16gb class 4 (Patriot memory) and it works really well, I have also tested a 16gb class 2 (SanDisk) and I really don't see any difference in the feel or performance. I assume that higher class would be faster data transfer but haven't had any issues with a class 2 or 4 yet (I keep my music library on SD2).
Click to expand...
Click to collapse
I think I have the same Patriot 16GB SDHC Class 4, and just like the reviews on NewEgg state it seems to run @ Class 6 speed. The price was good and so far I'm happy with it.
Shortly after I posted that, I went and looked around and couldn't find one either.
I also realized I am only running a 16GB SD card... thought I had a 32. Doh!
nunjabusiness said:
Try to find one. I did and failed completely.
Click to expand...
Click to collapse

Kingston SD cards

Has anyone here had any experience with kingston sd cards? Just bought a class 4 16g card from newegg for 35 including shipping.. The reviews were pretty good and I know theyre a pretty big company so I think i'll be ok but wanted to see if anyone here could confirm or deny this
*I'm just sayin...
ive got a pny 16 gig, and it works great. i know kingston makes good ram, so id imagine that a kingston sd card would be worth its money, and i cant see a big brand memory product being garbage, especially in 2011. that price is a win no matter what though.
How much was the card? I would love a bigger card. And what did y'all do to transfer memory from one card to the next?
Sent from my HTC Vision using XDA App
If you have the moola, get this from Newegg, it's Class 10 so faster speed
WINTEC 32GB Micro SDHC FileMate Mobile Professional SDHC Model 3FMUSD32GBC10-R
It's around $82.49 with free shipping.
I've read a few reviews on Wintec cards, and not a lot of them are good. They work fine at first, then start to degrade quickly. To top it off, people say that when they try to get it replaced through Wintec, Wintec claims that its user error or abuse.
PatrickHuey said:
How much was the card? I would love a bigger card. And what did y'all do to transfer memory from one card to the next?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
He said in the OP that its $35 and free shipping.
I have 16GB for two years already and now i bought 32 gb ... both are working well so far.
16gb are going from $22-$35 shipped right now - class 10 speeds. Pick one up if you are using the stock 8gb. I just ordered one myself.
I've used two different Kingston SD Cards. They worked well for me without any issues. My previous was an 8gb Kingston class 4 and I currently have a Kingston 16gb Class 4 card.
The 8GB is nearly 2 years old and is working just fine. Have used it in multiple cell phones and currently serves as a flash drive for work using an adapter. The 16gb works just as well with some added space.
icce007 said:
If you have the moola, get this from Newegg, it's Class 10 so faster speed
WINTEC 32GB Micro SDHC FileMate Mobile Professional SDHC Model 3FMUSD32GBC10-R
It's around $82.49 with free shipping.
Click to expand...
Click to collapse
I heard to many horror stories about wintecs... I wanted somethin reliable
*I'm just sayin...
gbarayah said:
I've used two different Kingston SD Cards. They worked well for me without any issues. My previous was an 8gb Kingston class 4 and I currently have a Kingston 16gb Class 4 card.
The 8GB is nearly 2 years old and is working just fine. Have used it in multiple cell phones and currently serves as a flash drive for work using an adapter. The 16gb works just as well with some added space.
Click to expand...
Click to collapse
Yea I went with the class 4 as from whhat I've heard anything higher doesn't yield much results (at least in a cell phone) but its working nice so far
*I'm just sayin...
I've also heard bad reviews about the wintec cards too. Let us know what you think about the Kingston.
Sent from my HTC Vision using XDA App
I bought a Kingston 8GB Class 4 MicroSDHC for my previous phone, the Nexus One, a year ago and I was very satisfied with it. It's way cheaper than the Sandisks and it works great so yeah, highly recommended!
ctraywick1 said:
Yea I went with the class 4 as from whhat I've heard anything higher doesn't yield much results (at least in a cell phone) but its working nice so far
*I'm just sayin...
Click to expand...
Click to collapse
From my experience I would have to agree on the class. To be honest, I think even a quality class 2 card would do just fine on a mobile device.
The class is an indication of the minimum Write Speed (class 4 = 4mb/s class 6 = 6mb/s, etc) The Read speed is generally much higher than that, so even if you are running applications from the SD card, performance shouldn't be hindered by a lower class card.
The only instance I can think of that performance would be affected is if you record a lot of 720P video with your phone. In that case, a faster write speed *Should* help with stuttering issues.
Now if we were talking about a high end SLR camera, then hell yes, speed makes a huge difference. I run a Kingston Class 6 in my SLR and it handles everything just fine, including HD video.
Just my 2 cents...
Well,
What it really comes down to is how fast the SD card adapter is in our phones, which I haven't figured out yet. If it'll fully utilize a class 10 card in terms of max write speed, then I would totally go for a class 10 card.
Can anyone verify the max speed our phones could support? (No guesses, please)
Sent from my HTC Vision using XDA App
I like Samsung cards personally. The performance has always been well above it's rated speed, and I've never had one corrupt/fail on me.
When you have a spare 10mins then give this a read:
http://www.bunniestudios.com/blog/?p=918
Newegg says shipping is $9.99
convolution said:
Newegg says shipping is $9.99
Click to expand...
Click to collapse
Must have been a promotion. My shipping was free. ANd to update everyone else it works like a charm. Dont really notice anything as far as normal phone function because I dont store apps on SD but My Titanium, Nandroid, and Just general SD backups to the PC are noticably faster.
Kingston is dead to me...
So, used to be a big proponent of Kingston, but they've seriously slipped over the last couple years (and not just flash, I've had major problems with their desktop memory, too, but that's a story for another forum). I bought the SDC4/32GB from Newegg. Supposed to be 32GB class 4 card. Wow. First one they sent wrote at 2MBps, read at 3MBps. Sent it in for a replacement, and I got one that wrote at 3MBps and read at 3.5MBps. Tried formatting it with my phone, with the official sdformatter utility, with Windows, with Linux, nothing helped. Third replacement was back down to 2/3MBps. Hardly class 4. And no, it wasn't my device or anything like that. I've got an actual class 4 8GB Sandisk card that came stock with my phone, and it does 5/7MBps on the same devices on which I tested the Kingston. And the Sandisk can record 720p without stuttering. Recordings from the Kingston were like watching a slideshow.
Very much done with that. Sent it back (again), got a refund, and now I've ordered that class 10 Wintec 32GB. Curious to see how it performs, and I'll stress it right away to see how it handles in the long run (do a bunch of writes and reads the first week to make sure it won't crap out right away). I'll report back here with my results, but they can't be worse than the Kingston. And from what I've read, it may be hit or miss, but when I get a hit, it'll be a class 10!

[Q] Recommended microSD class for Transformer

As per thread subject, does it have to be class 6? Or class 4 is enough without degrading its performance?
Will class 10 be even better (I'm not sure if the bottleneck in its architecture will waste the memory card data transfer capacity)?
bhadip said:
As per thread subject, does it have to be class 6? Or class 4 is enough without degrading its performance?
Will class 10 be even better (I'm not sure if the bottleneck in its architecture will waste the memory card data transfer capacity)?
Click to expand...
Click to collapse
Remember that class numbers are the minimum "writing" speed, so for reads (viewing contents) on a good Class 2 should be good, even for HD videos, however, copying files on it can be slow.
I has a SandDisk 16GB class 2 on the EVO and writing speeds are more like class 4, also a temporary SanDisk 8GB class 2 on the TF with good speeds.
I ordered a SanDisk 32GB class 4 for the TF. If I am correct, there is still no official information if the TF can enjoy class 10 speeds, but it should be.
I bought a 16gb class 10 from Fry's for $33.
I'm getting fantastic speeds from it.
The highest class in the size you want that you can afford.
That's my recommendation.
bhadip said:
As per thread subject, does it have to be class 6? Or class 4 is enough without degrading its performance?
Will class 10 be even better (I'm not sure if the bottleneck in its architecture will waste the memory card data transfer capacity)?
Click to expand...
Click to collapse
It really depends on how much space you would like to have in your device.
As far as speed is concerned, the results vary but more often than not, each class is going to be faster than its lower counterpart. If you don't want to spend too much on 32GB class 10 card then class 6 16GB is another balanced option!
On the other hand, this card was $108 just last week, but now its $94 bucks and with excellent reviews:
http://www.amazon.com/gp/product/B0...17145&creative=399349&creativeASIN=B004AM610M
dotpro said:
As far as speed is concerned, the results vary but more often than not, each class is going to be faster than its lower counterpart. If you don't want to spend too much on
Click to expand...
Click to collapse
Hi Dotpro, I don't really get what you mean by "faster than its lower counterpart".
Do you mean by faster than its lower memory capacity counterpart?
I got this info from SDcard.org
Fragmentation and Speed
The memory of a card is divided into minimum memory units. The host writes data onto memory units where no data is already stored. As available memory becomes divided into smaller units through normal use, this leads to an increase in non-linear, or fragmented storage. The amount of fragmentation can reduce write speeds, so higher SD card speeds help compensate for fragmentation.
The SD Association has specified operating conditions for SDHC, SDXC, SDHC UHS and SDXC UHS memory cards to guarantee the minimum speed according to the card's speed class. Speed logos are provided to help identify cards that comply with these specifications.
Click to expand...
Click to collapse
dotpro said:
On the other hand, this card was $108 just last week, but now its $94 bucks and with excellent reviews:
http://www.amazon.com/gp/product/B0...17145&creative=399349&creativeASIN=B004AM610M
Click to expand...
Click to collapse
Well, I just ordered that card. I hope it works well.
mystombox said:
Hi Dotpro, I don't really get what you mean by "faster than its lower counterpart".
Do you mean by faster than its lower memory capacity counterpart?
I got this info from SDcard.org
Click to expand...
Click to collapse
No, I don't think memory capacity has anything to do with speed. What I mean is that class 6 would be faster than class 2 or 4, obviously but it varies from device to device. For example, stock microsd card in my HTC evo was a class-2 which I replaced with one of the cards I linked above and speed of saving pictures and videos improved drastically.
Same card in the transformer was showing speeds that of a class 6 or 10! Having said that, there is no way to save videos and pictures on microsd (external) storage on transformer (at least I don't know and even though it can show galleries found on the external card) so you may not experience that slowness issue.
So for me, the sweet spot is class-6 if you cannot afford class 10 card and even those are now coming down in prices.
Ah okay.
Yes, that I know.
Class 10 is fastest, but it also depends on the read/write of the device.
Although honestly speaking, I may not even be using up 10gb of the internal 16gb.
I don't really have that much movies, or songs that I listen on the go. I do have them on an external HDD though.
Can Transformer write at 10 MB/s?
mystombox said:
Ah okay.
Yes, that I know.
Class 10 is fastest, but it also depends on the read/write of the device.
Although honestly speaking, I may not even be using up 10gb of the internal 16gb.
I don't really have that much movies, or songs that I listen on the go. I do have them on an external HDD though.
Click to expand...
Click to collapse
Exactly, it depends on the read/write of the device. That's actually my question.
I tried to ask ASUS customer service, but seems she doesn't know the answer. Instead she advised me to carry the tablet & test it when I am buying the card!
The problem is:
1. My Transformer is still on pre-order.
2. I don't think the seller will allow me to open the seal to test the memory card before I commit to purchase it.
Basically I need the memory to watch HD movies while travelling. I agree with dark_aura: the class only tells the 'minimum writing speed'. It should be good enough to watch HD movie even with class 2. But with HD movie in average about 4-5 GB each, it will take more than half an hour just to copy a single movie into the card. >> Currently there are 50 over movies in my disk library line up in the queue. I simply have no time to watch them at home.
Perhaps my question should be:
Can anyone who has class 10 memory confirm if Transformer can write at the speed of 10 MB/s into it?
Thanks in advance.
dotpro said:
On the other hand, this card was $108 just last week, but now its $94 bucks and with excellent reviews:
http://www.amazon.com/gp/product/B0...17145&creative=399349&creativeASIN=B004AM610M
Click to expand...
Click to collapse
Just ordered that one!
Got it from $91.99 shipped from buy.com (on eBay) and I used their 10% back eBay bucks thing.
(The IE9 promotion.)
Its a class 4 but good reviews for this 3C microSD 32GB card:
http://www.amazon.com/gp/product/B0...17145&creative=399349&creativeASIN=B003UOKK9Y
I did some of the research and finally decided on a SanDisk 32gb card. Really didn't want to spend 100 bucks if I could help it. It costs like 85 from Amazon but I ended up getting this bundle from Digital Media Source - fulfilled from Amazon though for about $66 including an SD card adapter and a card reader.
It said that it would come in a retail package - it didn't - just a small envelope with the card and card reader. I did get a class 4 card in my particular shipment though. I was scared it might be counterfeit... apparently a lot of eBay and third party sellers have that issue. They will modify a 2gb or 4gb card to make it report as a 32gb but when you write more than 32gb it will fail.
I ran some tests on my computer (my Transformer is out for repair) - I am getting 5mb a second write and about 12mb a second reads - tested the entire 32gb twice and it seems to work well.
One thing I keep reading about is some of the cards with very fast write speeds (good for taking photos for example) might not have good random access speeds. Not sure if anyone else can comment on that. I decided to go with the SanDisk since they seem to get solid reviews and it was a pretty good value.
I just got my transformer and im looking for a good one without going over 100$. I can get some pretty good deals on some 16gb ones but i don't know what class they are what would you recommend as the lowest you can go
Dark lord me said:
I just got my transformer and im looking for a good one without going over 100$. I can get some pretty good deals on some 16gb ones but i don't know what class they are what would you recommend as the lowest you can go
Click to expand...
Click to collapse
Here is a nice one from Memory Express
http://www.memoryexpress.com/Products/PID-MX32238(ME).aspx
Has anyone with a transformer tested sdxc cards and does the transformer recognize it?
Sent from my HTC Glacier using XDA Premium App
Tone503773 said:
Has anyone with a transformer tested sdxc cards and does the transformer recognize it?
Sent from my HTC Glacier using XDA Premium App
Click to expand...
Click to collapse
I really doubt it will work...
SDXC devices are backwards compatible, so they accept SD and SDHC memory cards. SDXC memory cards must only be used with SDXC devices and should never be used in non-compatible devices.
http://www.sdcard.org/developers/tech/sdxc/using_sdxc
Has anyone with a transformer tested sdxc cards and does the transformer recognize it?
Sent from my HTC Glacier using XDA Premium App
Click to expand...
Click to collapse
I really doubt it will work...
SDXC devices are backwards compatible, so they accept SD and SDHC memory cards. SDXC memory cards must only be used with SDXC devices and should never be used in non-compatible devices.
http://www.sdcard.org/developers/tech/sdxc/using_sdxc
Click to expand...
Click to collapse
Okay I was asking because I knew there was some confusion in which people thought the tf was sdxc compatible, so I thought I would ask someone with a tf. My thought was that the tf was only sdhc compatible because that is what it said in the Asus website.
It would've been nice to have a sdxc compatible device though, the storage capabilities are massive.
Sent from my HTC Glacier using XDA Premium App
Nascar Dog said:
Here is a nice one from Memory Express
http://www.memoryexpress.com/Products/PID-MX32238(ME).aspx
Click to expand...
Click to collapse
Can you run apps stored on that card?
Issue with MicroSDHC
Hey just received my Transcend 16GB microSDHC class 6 card. I ripped a dvd with Handbrake and I noticed that theres lag and stuttering during playback with Mobo player. The video and audio are out of sync. At first I thought maybe it was the rip itself. I then move the 600MB MP4 file over to the internal drive of the TF. Played the file and its fine, no issues at all. I thought a class 6 card was good enough to play back a 600MB file?? Could it be the card itself?
http://www.amazon.com/gp/product/B0026L7DGA
It's got pretty good reviews.

32GB SD cards

Anyone using a 32GB SDHC card in their Fascinate? Just asking because there's one on sale on the Newegg Shell Shocker later today (check at 10AM pacific time). Wondering about speeds and such, and whether Class 10 is worth it (seems like if you want to fill such a big card, it'd be nice to have the faster write speeds of Class 10 but I've seen some reports of incompatibilities/problems with C10 devices).
I was just benchmarking the card that came in my Fascinate (which is supposedly Class 2) with SD Tools and I get 5-8MB/s writes and 16-18MB/s reads which is way better than the Class 2 minimums. The one on the shell shocker is a Class 4 so I'm just wondering whether it'll be a downgrade in terms of speed (just because it's rated for significantly lower speeds than what I'm getting with the internal one). I'll probably end up getting it anyway because I've got ~1GB free on my current one and I want to play with an Ubuntu chroot install.
i got the sandisk 32g class 10 it was worth it. Seems to R/W faster but that maybe due to the SD card boost read ahead cache hack. I think mine is set to 512K. Whether its faster or not the extra space is always a plus
Guess ill find out the hard way with ya, bought one as well. Was also wandering about the speed difference. Noticed the one that came with was class 2 and the 32 was class 4, hoped it at least wouldn't be any worse as i am content with the speed of the included sd. Was really surprised to see that it was a class 2.
Oh well just have to wait until it gets here and see.
DO NOT BUY THE Patriot LX Class 10 32GB CARD!!!
After a few months of light usage (i hardly ever connected it to transfer anything, just had HD seasons of breaking bad, chuck, human target and sparta that I never had time to finish watching) I finally hooked it up for maybe the 6th time since i purchased it, and after transferring some music and more shows, i got a "Damaged SD Card" error. For the last month since that occurrence, I have had to reformat the card at least once a week, and set up my music and just a few episodes at a time (because whats the point of putting seasons on if i'll just have to transfer them over again in a few days) consistently. Sure, it moves along at 12MB/s, but certainly not worth the hassle.
This is not an issue that I have heard of with Class 2 or Class 4 32GB micro SDHC cards, and Patriot says they are working with Microsoft and Google to determine the cause of the issue, but Newegg reviews indicate that this is not an isolated incident.
Good luck with the SanDisk card!!!
Mhm, I got the A-Data 32GB class 4 from Newegg. I benchmarked it and it's not as amazing as the built in card (around 5-6MB/s write and 12MB/s read) but it's not super slow. Yeah, I ended up avoiding the Class 10 cards for that reason actually. It's nice to have so much free space now; I think I'm going to try installing Ubuntu in a chroot jail again.
The new PNY class 10 for tablets is now in stock at Newegg, just ordered one with free shipping.
Sent from my SCH-I500 using XDA Premium App
I got this exact card -- Just arrived yesterday.. I am getting AWFUL performance from it. I mean it performed like 3MB/s write and 8MB/s read.. It only fluxuated by about +-1MB with various SD read_ahead changes.. So disappointed. The worst thing is my phone is NOTICEABLY worse-off with the card in (weird stutters, etc).
Which leads me to something else altogether -- Has anyone noticed that with no SD card in the phone it just flies? I mean even the old SD card which didn't SEEM to give me any stutters was a matter of night and day with it in our out.
jt's CM7 Test Build 10 / EC09 radio / OBT .13 kernel @1400mhz
Old radio was EB01.
_______Update________
So I hadn't tried the card today with the EC09 radio (why should it make any difference?). It seems to have made a difference. Below are my results (with SD Booster app to change Read Ahead value, and AnTuTu benchmark just doing SD Card IO).
PNY 16GB MicroSDHC P-SDU16G10TEFS2
Read Ahead, AVG Write, AVG Read
4096, 6.4MB/s, 15.4MB/s
2048, 6.5MB/s, 15.4MB/s
1024, 6.5MB/s, 15.5MB/s
512, 6.0MB/s, 16.1MB/s
256, 7.4MB/s, 16.3MB/s
256 (2nd pass to verify), 7.4MB/s, 15.9MB/s
128, 6.9MB/s, 14.8MB/s
FAT32 / 16GB Partition
I hope this helps someone. Still not sure why my write speeds are so slow on Android when I've seen them hanging around 12MB/s in Windows (When using FAT32).
Patriot has a lifetime manufacturer warranty on most of their memory. You should contact them about getting a replacement. I run their RAM on my custom built personal pc. It is super stable. Just hoping to help.
Sent from my SCH-I500 using Tapatalk
My 32 gig card doesn't even work in the fascinate at all
It works in my thunderbolt my transformer and my laptop... but no fascinate!!
Its so annyoing and I can't fins the problem
Sent from my Transformer TF101 using XDA Premium App
I've used both the Patriot class 10 32gb card and the wintec 32gb class 10 card. Both have corrupted my data after a few days. Heard the sandisk and the lexar cards are good, so you may want to give them a shot.
Got the scandisk class 4 32gb and it's satisfactory
i was just about to buy a larger card when stumbling onto this post.
Does the read/write speed slow down as the card gets bigger in size?
cyonsinn said:
i was just about to buy a larger card when stumbling onto this post.
Does the read/write speed slow down as the card gets bigger in size?
Click to expand...
Click to collapse
No, but I have found that cheaper/nonbranded cards tend to be slower. Read reviews before buying.
I've got a lexar 32gb class 10. It's absolutely terrible. It takes so long for pictures from the gallery to load after you take a picture for example. Anything using hte SD card is slow as molasses. Oddly every benchmark I throw at it shows high speeds, so I have no idea what is going on with it.
may be could try this (get rid the lba) could help the perfomance and compatibility ?
try read this thread (hope help), I'm not try it my self on my fasci, since my class 10 msd still on it's way send to me.
http://forum.xda-developers.com/showthread.php?t=1010228
the author test it on motorola defy

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