Hi!
First, what is class 2 and class 6? Which is the best 2 or 6 in this case?
And which one of these two is the best:
Nokia MU 43 8 Gb MicroSDHC-11
or
Transcend microSDHC 8GB (Class 2) (TS8GUSDHC2)
- Class 2 specifikation - Support för Error Correcting Code (ECC)
Class mainly refers to read/write speed of the SD Card, the better the class the faster will be the data transfer speed but be careful with class 6 or class 8 cards on higher end memory like 8GB, 16GB or 32GB that has more tendency to give error. Class 4 is your best bet.
yusufjee said:
Class mainly refers to read/write speed of the SD Card, the better the class the faster will be the data transfer speed but be careful with class 6 or class 8 cards on higher end memory like 8GB, 16GB or 32GB that has more tendency to give error. Class 4 is your best bet.
Click to expand...
Click to collapse
Hi! And thanks!
I did go with the:
Kingston Micro SDHC Kort (TransFlash) - 8GB...
Kingston kort (TransFlash) - 8GB Class 4 - inkl. adapter. - SDHC kompatibel - Read-/write hastighet 58x (8,8 MB / s) / 45X (6,5 MB / s)
Hope this is better than the one i had, did not know about classes at all.
if you are installing and running thing of the SD always go for the higher class card.
I have a class 6, 16GB SanDisk which I have had since they
were first available.
I have had no problems with it from day 1.
tkalli said:
I have a class 6, 16GB SanDisk which I have had since they
were first available.
I have had no problems with it from day 1.
Click to expand...
Click to collapse
I cannot find a 16gb sandisk class 6 anywhere. I can't even find a class 6 microsd sandisk period. Where did you find it?
jas0nw0ng said:
I cannot find a 16gb sandisk class 6 anywhere. I can't even find a class 6 microsd sandisk period. Where did you find it?
Click to expand...
Click to collapse
Sorry, it is a Transcend 16GB Class 6.
The Sandisk 16GB in other phone is a class 2.
I just bought a kingston 32gb class 6 micro sdhc but when ever i put it in my hd2 it just freezes up and as soon as I remove the card it works fine again.At first i though that it was a fake so I:
1)performed multiple tests,
2)reformated a 1000 times,
3)even putting 20gb of data just to make sure.
Turns out that it is authentic and it works perfectly on my girlfriend's htc BalckStone it also worked when I installed NAND (which i later removed due to insufficient memory).Ive been searching for days, I think its a windows mobile issue, any tips??
you formatted it 1000 times ?
btw i use a class 4 8gb and no problem except it sometime cannot boot android, i dunno if its the sd problem or android problem
Related
Hello Every Body,
Can any body please confirm if the class 10 32 gb memory cards such as Kingston or A-Data are compatible with HTC HD7.
I read here before in XDA that only the class 2 cards from Scandisk are only the one that are compatible with the windows phone 7 devises.
But in this thread http://forum.xda-developers.com/showthread.php?p=10354934
dorianmuthig says that class 4 cards are compatible also.
So my Questions are:
1- Are Kingston or A-Data or other brands are compatible with the HD7 (because I already have 32 gb class 10 A-Data memory card)?
2- Are class 4 or above classes are compatible also?
Thanks in advance and I appreciate if any body can clear these inquiries for all to be benefited.
There is no such thing as a class 10. and as i have read at multiple places only class 2 sandisk cards have been confirmed working. everything else doesnt work this means class4 etc...
nuclear said:
There is no such thing as a class 10. and as i have read at multiple places only class 2 sandisk cards have been confirmed working. everything else doesnt work this means class4 etc...
Click to expand...
Click to collapse
Thanks nuclear for replay,
for your information there is a class 10 32 gb memory card
I hope that some body who tries higher classes than class 2 tells us his experiment
Apparently there is class 10 (16 and 32gb) cards available. http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=class+10+32+gb+microsd But, from what has been discussed class 2 are the only ones that have been confirmed to work properly (not decreasing boot times and app launching times). So, I would be cautioned to buy one until there is more definitive information as they have to be pretty expensive.
kwill said:
Apparently there is class 10 (16 and 32gb) cards available. http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=class+10+32+gb+microsd But, from what has been discussed class 2 and 4 are the only ones that have been confirmed to work properly (not decreasing boot times and app launching times). So, I would be cautioned to buy one until there is more definitive information as they have to be pretty expensive.
Click to expand...
Click to collapse
Where did you read about the class 4 card?
nuclear said:
Where did you read about the class 4 card?
Click to expand...
Click to collapse
Oops, my bad. Mis-stated that one. Class 2 is all that's confirmed. For some reason i was thinking the tutorial to change it to 32 gb was using a class 4. Slap me
It seems that we should wait for some time to be sure
And if any body try other classes higher than class 2, please inform us withj the results
It may work, however since Kingston and A-Data use Sandisk or Samsung manufactured cards with a secure digital storage controller optimized for fast sequential read and write, small file access may actually be slower than in a comparable Class 2 card. Those fast cards are made for video recording and high resolution photography which isn't what Windows Phone 7 OS needs. You need to look at 4K random read, 512K random read/write and sequential write.
Get either a Sandisk SDSDQM-032G-B35 (definitely works) or SDSDQM-032G-J35A (current manufacturing cycle, promises faster speeds and lower power consumption, still rare)
kingston class 4 = does NOT work.
sandisk class 2 = works (same speeds as the kingston though!)
thats as far as i tested.
pencilcase said:
kingston class 4 = does NOT work.
sandisk class 2 = works (same speeds as the kingston though!)
thats as far as i tested.
Click to expand...
Click to collapse
Thanks for the advice,
But what about scandisk class 4 or higher are they workable
ihabsad said:
Thanks for the advice,
But what about scandisk class 4 or higher are they workable
Click to expand...
Click to collapse
SanDisk class 4 has just been released and is available on Amazon for $100. I am getting a class 2 which is tested and confirmed working. The class 4 if it works should be much faster.
Sandisk SDSDQM-032G-B35 was not working properly on my HD7. Slow, freezing, crashing, and sometimes not detected card. All kinds of bad behavior. The original 16 GB card was sent back into the phone, now every thing works OK.
I'm going to buy a 16GB microsd card from sandisk. I've been finding on Amazon and found these two products:
Sandisk 16GB Mobile Ultra MicroSD Card : £36.00
SanDisk 16GB microSDHC Memory Card : £15.99
I've also noticed they're all class 2 (can't find a class 4 or class 6 sandisk). So what is the difference between them? I'm using the card for Windows Phone 7, so which one should I buy?
http://en.wikipedia.org/wiki/SD_Memory_Card#SDHC_cards_with_greater_than_32.C2.A0GB_capacity
as I understand it the only advantage of SDHC is an increased card storage. And im not sure if an SDHC card works in the HD2.
uxu said:
http://en.wikipedia.org/wiki/SD_Memory_Card#SDHC_cards_with_greater_than_32.C2.A0GB_capacity
as I understand it the only advantage of SDHC is an increased card storage. And im not sure if an SDHC card works in the HD2.
Click to expand...
Click to collapse
Both of them should be SDHC (>2GB). I'm asking about the Ultra thing.
Zell Dinch said:
Both of them should be SDHC (>2GB). I'm asking about the Ultra thing.
Click to expand...
Click to collapse
Sorry, got it wrong
They're the same thing. One has an adapter however
Ultra means it has higher transfer speeds.
There's also Ultra and Extreme in the regular SDs.
Ultra=15 mb/s
Extreme=30 mb/s
So it's all about speed.
@apallohadas: they have different model number, one is SDSDQY-016G-E11M and one is SDSDQ-016G-FFP. And I suspect that just a card reader will make that difference in price.
@joooe: but they're both class 2?
I've tried several different class cards in my HD2, and regardless of advertised 'class' r/w speeds only changed noticeably if I took it out of my phone and used a card reader or adapter like shown in the "ultra" listing you have.
apallohadas said:
I've tried several different class cards in my HD2, and regardless of advertised 'class' r/w speeds only changed noticeably if I took it out of my phone and used a card reader or adapter like shown in the "ultra" listing you have.
Click to expand...
Click to collapse
Hello apallohadas
can you confirm or any one without any doubt that there is no difference in R/W speed between class 2 or class 4 or class 6 inside HD2 with Windows 6.5 or Android
thanks
secoseco said:
Hello apallohadas
can you confirm or any one without any doubt that there is no difference in R/W speed between class 2 or class 4 or class 6 inside HD2 with Windows 6.5 or Android
thanks
Click to expand...
Click to collapse
I don't have Winmo installed on my phone anymore, so I can't rerun that test and I didn't keep the numbers last time that I did it.
But if you'd like to try testing cards yourself, I used a program called H2test and a card adapter. My Class 2 Sandisk 32GB card gave numbers comparable to a class 6 Transcend 16GB.
Inside of the HD2 however, while on Android the tests take too long (setting read/write file sizes of 1GB+.) I've read in several places that the hardware limits performance as though they were all class 2 cards.
There are reviews where a class 4 card is superior to a class 6 card.
Sandisk cards are just great.
In the sandisk website there is no info about the class of both cards. Don't believe they have the same class.
apallohadas said:
I I've read in several places that the hardware limits performance as though they were all class 2 cards.
Click to expand...
Click to collapse
thank you apallohadas for replay
I think so, hardware limitation to Class 2 with HD2 although I read in several places that there is more performance with Class 6 or 10 card in Android especially SD Android
I have Sandisk 16G class 2 and want to upgrade to 32G and I don't want to wast my money in useless class 6 or 10 with my EU HD2,
any one use Sandisk class2 then upgrade to class4 or 6 with EU HD2 and get faster performance in read and write inside HD2 not as disk drive ??
thanks
So I finally got HoneyComb working on my Nook Color (NC), residing in the microSD card using a Kingston 8GB Class 4. However, this card seems to be one of the slowest and using the HC in NC is almost unusable.
Example:
- Screen rotation takes 3-5 seconds
- Opening new app, depending on which app, can take 1-5 seconds
- Browsing certain website can make the screen unresponsive
- etc..etc..
I know that the HC version available in this website is probably still in "preview" or beta stage and some slowdown is expected, but I am not expecting it to be THIS bad. So I think the culprit is the microSD card itself.
However, I have tried many different MicroSD card and none works. I.e. it gives the "decrypt storage" error when booting up the NC. The cards I have tried are:
- Patriot 16GB Class 10
- A-Data 16GB Class 10
- Kingston 8GB Class 6
The ONLY one that works so far is Sandisk. Unfortunately, from SanDisk website, I do NOT SEE ANY card higher than Class 4.
Thus, can you recommend which is the MOST STABLE and FASTEST card? I.e. the ones that did NOT give slowdown per the examples I have given above.
i'm using sandisk 4 GB class 4 HC
nookie froyo, runs fantastic.
Class 10 cards apparently dont do too well. lots of people have had issues with those. class 6 should be OK, class 2 and 4 workk very nice.
Do you have recommendation for a good Class 6 MicroSD card? SanDisk don't sell anything higher than Class 4. I tried Kingston Class 6 and my Nook Color just spit on it...
lanwarrior said:
Do you have recommendation for a good Class 6 MicroSD card? SanDisk don't sell anything higher than Class 4. I tried Kingston Class 6 and my Nook Color just spit on it...
Click to expand...
Click to collapse
I am currently running trancend 8gb class 6. Havent had any issues with froyo, HC or Cm7 booting or running.
I'm using a A-Data Class 6 16Gb card with no trouble. I do have 2 Kingston Class 4 32Gb cards and they have the issue with the decrypt garbage when you try to boot up HC from the sdcard. I've also got a Class 10 32Gb Wintec card which I have not had time to test out yet as I just got it the other day.
After a failed Kingston 16gb class 10, I got a SanDisk 8gb Class 4 and it's speedy enough. I notice very minimal slow down on some menus but I don't know if that's just the OS itself (being a preview after all)
danootz said:
After a failed Kingston 16gb class 10, I got a SanDisk 8gb Class 4 and it's speedy enough. I notice very minimal slow down on some menus but I don't know if that's just the OS itself (being a preview after all)
Click to expand...
Click to collapse
That's the exact same card I have, and you did NOT experiences any of the slowness I posted in my 1st thread?
How drastic is the difference between Class 2 and Class 4?
I know that it says that it processes twice as fast, but is it noticeable? Can somebody give an example of when you can actually tell the difference? Playing music, watching movies, booting from microsd?
I have a Sansdisk class 2 8gb card that performs just as well as my class 10 Patriot 8gb (which has booted both HC and currently used as storage for my eMMC CM7 install.)
Sansdisk severely underrates their SD's and many other manufacturers overrate theirs. It is not a perfect rating system.
I would recommend going w/ sansdisk in whatever size you can afford. Class 2/4 will be plenty fast.
Before I switched back to Froyo I was running off the SanDisk 8Gb card from BestBuy - $20 - which I found very responsive. I think it is Class 4, but I could see any label on the card itself or the package.
The SD card speed was not the reason I switched back, it was the lack of other features in HC preview. I can't wait for an AOSP release
8GB Cards
I currently have 2 8GB microsds that I switch between:
-Transcend 8GB Class 6 running Honeycomb from Amazon. Tested it with h2wtest and got 16MB/s write and 14MB/s read. (Not sure if that is a typo on the tool or not and it's supposed to be bits instead of bytes, but that's what it says).
-Sandisk 8GB Class 2 running Nookie Froyo. Tested at 14MB/s write and 18MB/s read.
Both cards run their respective ROMs well, so it seems to jibe with what chisleu said about Sandisk underrating their cards. I could also be limited by the USB adapter I was using, but I had another adapter that was limiting it to 4MB/s both ways.
I want to change my 2gb SD card for an 8 or 16 gb one. Which one should I get? Should I go for a class 4 or 6, or is class 2 enough?
Get class 6. Class 6 SD cards are fast and if you're intrested, you may use multiboot with that card.
Well better card class better performance on sd...such like apps2sd and if u use a multiboot..but i think there is no specfial need for extra high speed card...
well at least 6th card class u would need!
personally i have 8gb 10 class card atm!
I don't think I can easily find class 8+ cards here. What about this one? I can't find which class it is?: http://www.sandisk.com/products/mobile-memory-products/sandisk-microsdhc
Dexter_prog said:
I don't think I can easily find class 8+ cards here. What about this one? I can't find which class it is?: http://www.sandisk.com/products/mobile-memory-products/sandisk-microsdhc
Click to expand...
Click to collapse
I use a lexar micro sdhc 16gb 6 class
I bought from ebay de 35 euros its the original and I have 10 years guarantee
Check it..
I have been using Sandisk 16GB Class 4 for a while now, and I need to increase my storage (32GB)
I am confused between these two cards:
Samsung 32GB Class 10 for 1599 INR (29.43 USD)
Sandisk 32GB Class 4 for 1216 INR (22.38 USD)
Which one should I go for ?
If your not looking for fast write speeds or using as a "swapped" internal memory, just go for the class 4, never pay more than you need for memory cards, they date to fast.
I thought greater speed (class10) would be nice,
I was just wondering if samsung is good against sandisk or not ?
Also does samsung cards work with WP7 ?
i am using samsung class 6
16gb
and it works flawlessly for wp7 and native sd (android)
netchamp.faris said:
I have been using Sandisk 16GB Class 4 for a while now, and I need to increase my storage (32GB)
I am confused between these two cards:
Samsung 32GB Class 10 for 1599 INR (29.43 USD)
Sandisk 32GB Class 4 for 1216 INR (22.38 USD)
Which one should I go for ?
Click to expand...
Click to collapse
Why not go for the 64GB cards that are available now? They are selling for around $50 (for a SanDisk class 10 even) and they work great in an HD2. See my posts about this here http://forum.xda-developers.com/showpost.php?p=33028241&postcount=9 Basically the same post here as well, but I added a bit more info http://forum.xda-developers.com/showthread.php?p=33102891#post33102891 You can never have too much storage space.
Be careful with class 10 cards as for phone memory use they are not the best.
Good quality class 4 or 6 is best all round card with better sequential speeds that are more in line with phone usage thus better performers & cheaper/easier sourced plus less prone to issues/compatibility ...
i use sandisk
I bought the Samsung 32GB Class 10. It is really fast. I'm using Android via NAND and you can improve your smartphon experience by upgrading your system with this card a lot.
I use a 16GB class 10 Sandisk micro sd
I use SanDisk Ultra microSDHC UHS-1 8GB card.
Worked very well with JellyTime NativeSD ROM and now with WP7 ROM 8858. So cheap and lightning fast. I recommend it for everyone, great memory card!
I use 32 GB Class10 Transcend Extrem Speed (Ultimate), this card has a very well performance with WP7 and NativeSD.
http://forums.whirlpool.net.au/forum-replies.cfm?t=1582172
Second place in random speed (4k R/W)!
Which is important for WP7, NativeSD or Nandroid with A2SD, DataOnExt, ect.
http://forum.xda-developers.com/showthread.php?t=1150369
64 GB SD XC working !
http://forum.xda-developers.com/showthread.php?p=40204936#post40204936