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...
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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?
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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.
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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.
Related
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
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.
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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.
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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
Hi guys. I was wondering if there are any issues making bootable SD cards for honeycomb or froyo and etc.
I am thinking of buying an micro sd card for the nook color.
which one of you guys would recommend?
16GB class10? 8GB class10?
I have seen all mostly using 8gb or 4gb at most. is there any issue using 16gb class10? please advice. thanks!
should be fine.
waiteck said:
Hi guys. I was wondering if there are any issues making bootable SD cards for honeycomb or froyo and etc.
I am thinking of buying an micro sd card for the nook color.
which one of you guys would recommend?
16GB class10? 8GB class10?
I have seen all mostly using 8gb or 4gb at most. is there any issue using 16gb class10? please advice. thanks!
Click to expand...
Click to collapse
If they are same class then you should get about the same speed off either and all your looking at is size... if you want 8gb of space get the 8gb if you want 16gb of space get that one instead.....
I would not recommend using anything lower than a Class 6 card however.
I've run HC on a 8gb class 4 card for a while. No real problems. Maybe lags a little time to time, but that may also just be the rom.
i see... initially i thought there were issues with class10 16gb cards.
thanks all for the input!
I purchased two 8GB Class 10 cards. I use one for storage and the other for Honeycomb and it runs great.
Can the Nook actually even use the speed of a class 10? I know many phones can only fully use 4 or 6, with the only benefit of 10 being faster transfer while connected directly to PC. Class 2 is just slow on everything, of course .
waiteck said:
i see... initially i thought there were issues with class10 16gb cards.
thanks all for the input!
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Click to collapse
I tried class 10 and class 4 16gb cards because I really wanted the space. I had all sorts of problems running on the class 10 once v04 honeycomb came out and the class 4 would run froyo and HC but it was so slow it couldn't be used. Some people seem to be using them but when I relaced it with a 8gb class 10 Patriot card, it runs great.
As to whether the nook can use a class 10, I don't know. I certainly know it MUCH faster with a class 10 than a class 4. I also bought a class 6 AData card but I have not tried it as a speed comparison. I was just tired of running back to the store to return them and test another so I bought two and started with the fastest one.
16gb might work with future versions but for now, I am sticking with 8gb cards.
I recommend the Patriot 8gb Class 10. The model I bought was the LX Signature Series: PSF8GMCSDHC10
therealguppy said:
If they are same class then you should get about the same speed off either and all your looking at is size... if you want 8gb of space get the 8gb if you want 16gb of space get that one instead.....
I would not recommend using anything lower than a Class 6 card however.
Click to expand...
Click to collapse
Not necessarily. Class only implies a guaranteed minimum WRITE throughput, e.g. class 4 = 4MB/s, class 6 = 6MB/s, etc. that a particular class of card is capable of supporting. There is no guarantee that the tablet, camera, etc. is actually capable of achieving/sustaining that throughput rate though.
Read throughput can be anything, but are usually close to write speed, and another factor not as important most of the time with tablets is the latency of r/w accesses.
In the pre-SDHC days Japanese made(Toshiba - only Japanese maker) uSDs were the best in terms of speed and latency, followed by most Taiwan(various) made cards. Chinese(various) made cards were the worst by FAR. Also the pre-SDHC uSDs had varying r/w throughput and latency depending upon how "full" they were with the same general rule as above applying as to where manufactured. Presumably this is not the case with SDHC as the class implies that regardless of how full a card is that it WILL maintain that minimum write throughput.
8 v. 16: From the pricing that I've seen 2 8GB cards are cheaper than a single 16GB -> 8GB a better deal IMO. e.g. class 6 8GB are <$15 while 16GB class 10 are >$35 at least on newegg...
Another factor to consider is that you likely don't need a class 10 card unless you happen to have a very high performance/high resolution digital video recorder... i.e. class 2 is likely even good enough for most tablet video and other applications, but since class 6 cards can be had at reasonable prices(online, b&m are profiteeringly insane in their markups) those would probably be the best choice.
[EDIT]
I'll let you know about class 4 4GB uSDs as a local b&M unbelievably has an approximately reasonable price on PNY(probably Taiwan) class 4 4GB uSDs, $10 which is cheap enough to pitch them if they're junk or use them for applications that don't require high throughput.
(On a side note most class 4 and class 6 uSDs work great with Nintendo DSes, which I'd suspect are MUCH more sensitive to throughput and access latencies... or so I've read...)
[/EDIT]
I see Stevr had posted which Patriot he had success with in Post #8 of this thread, and in the HC Preview v4 thread there have been a few negative posts about certain cards not livinig up to their class ratings... so I have to ask...
Is there a single thread recommending or comparing the various MicroSD cards, how they've worked for Froyo or HC booting/running off them? (i.e. a central posting of "this one works great..." or "this one is too slow"?)
EDIT: I found this talking about cards for Froyo from SD -> http://forum.xda-developers.com/showthread.php?t=946896 which has some makers, size and class.. no specific model numbers.
KidJoe said:
I see Stevr had posted which Patriot he had success with in Post #8 of this thread, and in the HC Preview v4 thread there have been a few negative posts about certain cards not livinig up to their class ratings... so I have to ask...
Is there a single thread recommending or comparing the various MicroSD cards, how they've worked for Froyo or HC booting/running off them? (i.e. a central posting of "this one works great..." or "this one is too slow"?)
EDIT: I found this talking about cards for Froyo from SD -> http://forum.xda-developers.com/showthread.php?t=946896 which has some makers, size and class.. no specific model numbers.
Click to expand...
Click to collapse
seems like alot of 16gb class 10 are having issues with running froyo off memory cards.
might get a 8gb class 10 instead. and a spare 16gb class 10.
I just put one of the CM nightly builds (build38) on a uSD card (sandisk 16gb class 2) and there is a major lag to even enjoy the device. I have been reading about that sometimes class numbers on the cards don't mean too much.
Which card would you recommend to run CM from (Brand/class/where to buy) from your experience?
any class 6 card should be plenty enough (as long as it has enough room for the ROM and stuff) even class 4 should work much better (but still some lag i beleive, idk ive never tried it)
newegg is a pretty good place to shop for them. Heres one such card - newegg.com/Product/Product.aspx?Item=N82E16820211341&cm_re=8gb_micro_sd_card-_-20-211-341-_-Product
There is a long thread about this on here and the class 6 Transcend 8GB card got the most mentions for good perfomance. The probability for issues to arise increases when using cards over 8GB.
I have a class 2 Sandisk 8GB and class 6 Transcend 8GB card. They both work well.
I have been buying the Wintec cards from newegg for a couple months and run them in both my captivate and my nook they work awesome. Class 10 and fast. http://www.newegg.com/Product/Product.aspx?Item=N82E16820161411
Patriot Signature 8 GB Class 10 MicroSDHC
Did anybody have any experience with this card?
http://www.amazon.com/Patriot-Signa...I8MS/ref=sr_1_2?ie=UTF8&qid=1302629334&sr=8-2
rahlquist said:
I have been buying the Wintec cards from newegg for a couple months and run them in both my captivate and my nook they work awesome. Class 10 and fast. http://www.newegg.com/Product/Product.aspx?Item=N82E16820161411
Click to expand...
Click to collapse
Are you running a rom (e.g CM7) off the card? Did you ever run a speed test?
onurd said:
Are you running a rom (e.g CM7) off the card? Did you ever run a speed test?
Click to expand...
Click to collapse
Not at this time. What speed test would you like if I loaded one up on the card and booted from it?
onurd said:
Did anybody have any experience with this card?
http://www.amazon.com/Patriot-Signa...I8MS/ref=sr_1_2?ie=UTF8&qid=1302629334&sr=8-2
Click to expand...
Click to collapse
I used that card for HC v4 and it was fine.
I've got 4 uSD card: one Dane-Elec 2G no class, one Kingston 2G no-class, one Transend 4GB class 6 and one PNY 8GB class 4. All run CM7 very well, maybe I didn't pay attention but didn't notice much different in performance. In benchmark, the write speed is about 5-7 MB/s.
The higher capactity 16GB card seems to have more problems, other than that every card will do.
You should check into the random read/write performance of small files on these cards. sometimes the class 6 or 10 aren't all they are cracked up to be. Fast transfers of large file yes, but general performance can suck.
sandisk class 2 or 4 cards can have excellent perf. I have a class 10 that is outperformed by class 2/4 and 6 cards.
if you are having problems with crashing, etc. try a basic sandisk and see if perf. is better.
there is a thread about it but i can never find it.
I bought 8G (Class 10) memory card. but i don't think my phone(x8) support it?
in all of tests, My phone shows has class 4. Is it correct?
did you buy the card from Ebay or is it from a reputable source? Eg are you sure the card is a genuine class 10?
Swyped from HTC Desire S using XDA Premium
I don't know, how can i understand it is original?
insert your card into cardreader and record big file, and check record speed.
Have a look at the sdcard.
The most of the sdcards have a little number in a circle on it, and that´s the class of the sdcard.
So, if you can find a "10" in a circle on your card, it´s class ten.
if you have another number in a circle on it, then it´s not class 10
It may be a hardware problem, but testing the speed on a pc would be taking you out from the doubt.
I'm using a class 10 8gb Kingston microSD. No problem at all.
However, I experienced heavy writing problems with class 4 8gb Kingston. This was the reason why I had to resell this card, only to check with my own eyes the problem was on the x8 and not in the class 4 microSD.
I tested my 8G-Class 10 microSD with Ram Reader,
File: 699 Mb
write: 90 s ----- 7.8 Mb/s
Read: 65 s ----- 10.75 Mb/s
File: 398 Mb
write: 50 s ---- 8 Mb/s
Read: 20 s ---- 19.9 Mb/s
How do you think a bout my class of microSD?
Its class 8
Sent from my X8 using XDA Premium App
kingstone products have a lot of compatibility problems, i know they're popular but they suck.
I'm using an SDHC A-Data 8 Gb class 10 and works great.
cdanisor said:
kingstone products have a lot of compatibility problems, i know they're popular but they suck.
I'm using an SDHC A-Data 8 Gb class 10 and works great.
Click to expand...
Click to collapse
and become a faster relno from this phone?
XperianPro said:
Its class 8
Sent from my X8 using XDA Premium App
Click to expand...
Click to collapse
Those results mean nothing, there are lots of things that can influenciate speed. Also, the cards' speed is tested on factory with a special machine, not a computer, so real world speeds are always a bit slower. If the card was a fake i think it would be getting far worst performance.
Test it on a desktop pc (rear ports) using a decent card reader.
Sent from my E15i using XDA App
I have a kingmax class 10 8GB.
In pc, i can reach around 14.x mb/s.
In phone, fastest is 8mb/s, but in average 6mb/s+.
molimo said:
I bought 8G (Class 10) memory card. but i don't think my phone(x8) support it?
in all of tests, My phone shows has class 4. Is it correct?
Click to expand...
Click to collapse
Friends
At last, I tested my microSD (class 10) in Galaxy S I9003 with "SD Tools v2.1" & "SD Card speed test v1.9" applications, They show that the class of my microSD is 10, then tested again in x8 and show class4 or class6.
conclusion: Our x8 can't support class 10. it support class up to 6.
It's true that the sd card interface of the X8 can have a limit below class 10, but remember that there are always factors that can limit the speed.. Partition type, allocation unit size, ROM, kernel.. But yeah, i won't be surprised if it had a limit of roughly 6MB/s..and it's not that bad
Class 10 is very smooth for ungaze...
I test my 16GB V-Gen class 10 memory card with sd tools and the result:
read speed : 14,4 mbps
write speed : 8,2 mbps
i use 32k allocation unit size when formatting through computer,,
i have 8GB AData class 10 and work fast and smooth
Read 20 mb/s
Write 12 mb/s and some time more
can someone confirm if X8/W8 can benefit class 10? cause I have here class 6 offered by a friend for a very cheap price cause it is second hand
amnher said:
can someone confirm if X8/W8 can benefit class 10? cause I have here class 6 offered by a friend for a very cheap price cause it is second hand
Click to expand...
Click to collapse
i can confirm, because i use it.. i have AData 8GB class 10 card.
Cacobronx said:
i can confirm, because i use it.. i have AData 8GB class 10 card.
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Click to collapse
but compared to class 6? is it really big?