a followup to an earlier post that might save others some frustraton and headaches
i had ordered a 16GB Sandisk Ultra class 4 card from KomputerBuy on amazon (Sandisk lists amazon as an authorized dealer or "a where to buy" dealer).
Their product descript showed a pix of a class 4 card - what arrived was class 2, but a different product number as the one showing class 4.
Called sandisk to see what they'd say, and the CSR did a fancy deflective word dance telling me that what the class numbers meant yada yada, but it was surreal, he would never answer directly the question "okay, are you telling me that the NEW class 2 cards are the same read/write speeds as a class 4?". and during the conversation he did ask who the vendor was, and i identified KomputerBuy and he confirmed they were an authorized vendor.
but i left that conversation looking for an aspirin bottle
contacted komputerbuy, and as someone else described, komputerbuy emailed me back responding that "sandisk had a problem earlier with stenciling the wrong class number on their cards".
I took issue with that indicating: 1) customers should be advised of this BEFORE they've processed the order, 2) that description does not reconcile with the fact that the product ordered and the product received had different model numbers, so there was an unauthorized subsitution and 3) when i tested the write speeds, it was approximately 1/3rd slower than class 4s (ie write spd was 5.1MB a second)
now i'm dealing with their attempt to charge me "shipping and handling charges".
i went out and found an 8GB class 4 card at MacMall (also a Sandisk recommended dealer) - i actually called them, asked them to confirm it was a class 4 card, salesman went and picked it up, had it in his hand and said "yes, it's a class 4"
price was suspiciously low ($27) considering the memory card shortage that apparently exists in the industry
well, it came in today - its a class 2 as well
this time, the model number on the card is the same as the one on their website, so there was no product substitution, but having a second seller describe it as class 4 ("in his hand") coupled with Sandisk's deflective obsfuscating answer, tells me there's a shortage of class 4 sandisk mem cards, and sandisk is coordinating, suggesting, motivating sellers to distort product descriptions to move class 2 cards out.
personally, i still want a sandisk card, but will now buy it in a store, with the frigging card in hand
in case anyone thinks i'm smoking home rolled cigarettes, i've got some shots posted at http://s816.photobucket.com/albums/zz81/vze86qtl/8GB Sandisk class 2/, including a shot of the unopened packaging, a closeup of the card, a shot of the pkging model number and a copy of the vendor's web description
as an aside, newegg.com, who i trust (bought quite a bit from them), on their web indicate 10/22/2010 for expected delivery of 16GB Ultra cards (there's no guarantee they'll be class 4, but hopefully)
If you look here Got Sandisk ultra 16GB Class 2 instead of class 4!!.
The same thing happened to me, i returned the product and got the full refund, and picked another one with the "SDSDQY-016G-A11M" from amazon itself to be sure, good it's really (4) with the same serial but tagged at the back of package "Class 2" here was i think the truth about what KomputerBuy told me "Sandisk misprinted the class number"!. okay missing one tag not all the product with class 2 tags from the card it self to the serial and the package!!
the fact was the card with "E11M" is Class 2 not 4.
so you have received the new one, and it is stenciled as a class 4 on the card itself?
have you tested it on write speeds? -
I returned it, and buy another one, from Amazon direct with the code "A11M" (4).
And yes I tested the write speed and it was 14~ 15MB and 19~20MB in read using crystal disk mark.
MAJED.y said:
I returned it, and buy another one, from Amazon direct with the code "A11M" (4).
And yes I tested the write speed and it was 14~ 15MB and 19~20MB in read using crystal disk mark.
Click to expand...
Click to collapse
Interesting.......... from wiki.......
The following are the ratings of some currently available cards:
Class 2: 2 MB/s
Class 4: 4 MB/s
Class 6: 6 MB/s
Class 10: 10 MB/s
I have a class 4 (but it is just a generic/no brand one) and it matches the 4MB/s.
Do really get those speeds? If so I may stump up the cash for 'premium' brand.
If it is of any use I have attached a program that I use to rest with. Best done on a new card with no DATA or an old one with data backed up and card wiped. It will verify size and speed. As with anything please run this through your virus checkers first although mine have shown it to be clean and I have used it successfully myself. No install just save to desktop and double click.K.
I think wiki is wrong, as I know that the fastest sd card (class 10), is the same speed as the slowest compact flash cards used in cameras which is 30mbs
larryccf said:
when i tested the write speeds, it was approximately 1/3rd slower than class 4s (ie write spd was 5.1MB a second)
Click to expand...
Click to collapse
Quoting Sandisk:
The SD Speed Class Ratings specify a minimum sustained write speed for SDHC/miniSDHC/microSDHC cards (Class 2: 2 MB/s; Class 4: 4 MB/s; Class 6: 6 MB/s*).
*1 megabyte (MB) = 1 million bytes; 1 gigabyte (GB) = 1 billion bytes.
Click to expand...
Click to collapse
source : http://www.sandisk.com/Assets/File/pdf/retail/SDHC1.pdf
Technically speaking you are getting Class 4 speeds, but having said that, my Sandisk Class 2 , 16GB card can reach write speeds of up to 10MB/s when copying files over USB. I just tested by copying a 600MB movie using a micro SD card adaptor, it took 58 seconds meaning an average speed of 10.34MB/s. Read speed is around 17MB/s. I bought this card last year. Don't have the packaging anymore, so cant confirm the product code.
EDIT: I also have a spare Class 2, 8GB Card which i got bundled with my Previous Nokia 5800, Not sure who the original manufacturer is, because it only says Nokia 8GB Class 2. Did the same test and got 5.2MB/s write and 12MB/s read speeds. I'm not sure about the exact speed ratings, Sandisk and many others web sites say Class number corresponds to the minimum sustained write speed, maybe if I copy a combination of large and small files filling up the entire disk , I might get lower write speeds. but right now I get more than dowuble of what the minimum guaranteed write speed. Perhaps the key point here is not the average or maximum speed, rather the Minimum sustained write speed, which means at no time it should drop below the specified speed (which might cause problems for apps like video recording) but I can't find any official documentation specifying the average or maximum write / read speeds...
Related
mobilefun co uk have made this available for preorder for shipping from 20th April for £99 inc. taxes! Not bad for a new entrant I'd say.
http://www.mobilefun.co.uk/sandisk-microsd-card-32gb-p20431.htm
Does that write speed class this as a class 6?
According to the SD Card Spec
http://www.sdcard.org/developers/tech/speed_class/
Above 6MB/s is class 6
I just wish it was someone other than mobilefun...
They sold me a Motorola A780 (back when having linux on a phone was cool the first time around ) as new when it was used, and had the 2nd CD missing (making it impossible to install the GPS maps) and I found that the phone had been used (the GPS creates trail logs)...
trinode said:
I just wish it was someone other than mobilefun...
Click to expand...
Click to collapse
That's just marketing. They offer it ways before it's available.
When it reaches the market, other stores will offer it, too.
stewart1988 said:
http://www.mobilefun.co.uk/sandisk-microsd-card-32gb-p20431.htm
Does that write speed class this as a class 6?
Click to expand...
Click to collapse
Technically it does not because it uses the term "up to". Class 6 requires a minimum of 6MB/sec and when they say "minimum" they mean that it has to deliver that speed under all conditions (such as, say, as the card fills up). When the spec is quoted as "up to" then it is a maximum transfer spec and you will likely never see those speeds and they can't be used to qualify for a Class 6 rating.
Given that Sandisk's Mobile Ultra line, once the speed kings of the market, have been slowly downgraded to Class 4 and recently to Class 2 in shipping form, I wouldn't expect this card to be anything more than Class 2.
Now all we need is higher quality apps in the market.
ill pass is a class 2.
http://www.flash-memory-store.com/32gb-sandisk-micro-sdhc-memory-card.html
Sandisk first batch of 32gb micros is going to be class 2 only.
With other classes to follow at higher prices.
amazon is too annoying, brings up anything and everything, don't trust ebay
mymemory has class 2 or class 10 for £80+
help
NM, found a thread on this forum and got one ordered. yay!
from? link?
Bought all my SD Cards from these guys http://www.mobymemory.com/micro-SD.asp
this thread isnt in the wrong section at all.............
Can I ask why people care about the class? I've just got a class 2 32gb card from Vodafone for £89. I've not noticed any problems or slowdown taking pictures or playing media...which are the only things my card is used for. Transfers are no slower than any other device I connect via USB.
What's the big fuss?
it's for running apps from in the (hopefully) near future.
class 6 means (i think) a minimum 6Mb/sec transfer rate
oh, got it from memory cow
Yes, but most people have suggested they see no difference when using apps2sd with the "slower" cards. It seems there's a lot of assumptions being made leading to actual sales decisions where it may not be needed.
See this fellow who thought a faster card would solve his issues: http://forum.xda-developers.com/showthread.php?t=708859
So where is no differences between class 2 and class 6 ?
Because i have dilemma now, i want to buy some high capacity microSD card, and if i take 32GB it will be class 2, and if i take at same cost 16GB card it will be class 6.
And does any body try to buy 32GB card from Ebay ? ( i am worrying that 32GB is not GB, its Gb, and that means just 4GB )
Thanks for help
i woul;dn't trust the cards off ebay tbh
I went ahead and bought the Transcend 16gb class 6 card through OFFTEK. It arrived with the adaptor, and was very prompt.
http://www.offtek.co.uk/item_detail....at=1&subcat=74
Pretty good price too. I just copied everything to my desktop, swapped cards and copied back.
The new card works great, but i did notice that the full card size is stated as "14.96gb" on the phone, rather than 16.
I also wonder if there is a difrence between a class 2 or class 6 card when playing movies, apps or taking pictures on your SD card.
because that would make the difrence between going for a 32gb or 16gb card.
well, i noticed a difference when copying files. both cards broke 10MB/sec on large files, but the old card dropped damn quick when copying loads of small files - e.g photos.
i'd imagine it would be like this when looking through an album or flicking from one image to the next. it's not about the max speed, but the minimum.
hi mate,
what do you think about this one
http://cgi.ebay.it/16-GB-SD-HC-card...=ViewItem&pt=Memory_Cards&hash=item4aa2174e76
I know you don't trust ebay but class 10
monkeydrufy said:
hi mate,
what do you think about this one
http://cgi.ebay.it/16-GB-SD-HC-card...=ViewItem&pt=Memory_Cards&hash=item4aa2174e76
I know you don't trust ebay but class 10
Click to expand...
Click to collapse
37 euro's for class 10/16GB seems waaay to cheap for me.
I also doubt it's a micro sd
dragonithe said:
37 euro's for class 10/16GB seems waaay to cheap for me.
I also doubt it's a micro sd
Click to expand...
Click to collapse
right it is not a micro-sd, I have see bad
THE CLASS OF AN SD CARD IS TO DO WITH ITS WRITE SPEED NOT ITS READ SPEED, YOU WONT NOTICE ANY DIFFENCE WHEN READING FROM IT
deviouscreation said:
The new card works great, but i did notice that the full card size is stated as "14.96gb" on the phone, rather than 16.
Click to expand...
Click to collapse
Perfectly normal not to get the quoted capacity, combination of space lost due to formatting and the tendency of hardware producers to size storage media in decimal (ie. 16 000 000 000 bytes) rather than the binary equivalent - which the OS displays (16 x 1024 x 1024 x 1024 bytes).
I've confused myself with that statement - in short the hardware manufaturers use a commonly accepted, flattering but actually incorrect notation to lead you to believe that you are getting more for your money - HTH
Kingston make a 16gb class10, but it's pretty expensive (~100€)
http://www.mymemory.co.uk/Micro-SDHC?&filters=size:16384|Class:class 10
http://www.kingston.com/frroot/flash/sdhc_micro.asp
Oh, and by the way, up to what class num can the Desire actually handle ?
I picked up my SanDisk 16GB Class 6 from the Carphonewarehouse when i went and got my Desire,,, i beleive it was £42
IMO i have always used Class 6 cards, i think they are the business, i dont care for read and write speeds i just need something that works and is reliable, SanDisk have always had my back so there ya go
Just bought one of these from 7dayshop. Decent speeds according to these gadgies.
I'll let you know what it's like when it arrives.
BS...
Now... If they'd only ship to Finland.
for some reason that still seems expensive to me
i can find faster 16GB card for less
AllGamer said:
for some reason that still seems expensive to me
i can find faster 16GB card for less
Click to expand...
Click to collapse
And where is that?
Canada most local computer stores sell them cheap, brand names one too:
Transcend
OCZ
Adata
Kingston
Patriot
SanDisk
(listed in order of personal biased preference in relation to speed/price/reliability)
AllGamer said:
Canada most local computer stores sell them cheap, brand names one too:
Transcend
OCZ
Adata
Kingston
Patriot
SanDisk
(listed in order of personal biased preference in relation to speed/price/reliability)
Click to expand...
Click to collapse
And they are sandisk, and not some cheap one's which won't do over 9MB/s?
the first 2 brands are actually better and faster for less than Sandisk
yes sandisk is sandisk, they are always expensive
Can someone please elaborate on this class thing? I noticed that Toshiba SD class has different ranks, but none of the sandisk cards I find says anything about read write speed. Thanks.
Depending on the class, that's how fast the write transfer is I think. Class 2 = 2mbps, Class 6 = 6mbps. I don't think that's the literal translation though, better wikipedia it up.
I personally will find it very difficult to use a 16GB Class 2 card since I do a lot of transferring between computer and phone. I transfer videos, music, comics, and very nice photos.
Is there any way to tell the class from the package of a sandisk micro SD card? I have read plenty of stories about how people ordered a class 6 SD card online, only to find that it is actually a class 2.
on real authentic ones it's printed on the package inside the sealed plastic, also in the card itself
specially any model that is Class 4 or better
if it's not marked on the SD card then it's a Class 2
ah I see. Thanks.
AllGamer said:
Canada most local computer stores sell them cheap, brand names one too:
Transcend
OCZ
Adata
Kingston
Patriot
SanDisk
(listed in order of personal biased preference in relation to speed/price/reliability)
Click to expand...
Click to collapse
anywhere in particular, Im in brampton and would like a 16GB card for cheap, canadacomputer has one for 44$ but maybe you know somewhere for cheaper? Would it make sense to buy two faster 8GB cards and hide one under the back cover somehow? (im sure a card is thin enough to fit under there no problem?)
Better SD buy !!
Brownstone said:
Just bought one of these from 7dayshop. Decent speeds according to these gadgies.
I'll let you know what it's like when it arrives.
BS...
Click to expand...
Click to collapse
16gb class 6 transcend works very fine (speed matters)
45 euro !!!
Wrong is not right
The.Opethian said:
Depending on the class, that's how fast the write transfer is I think. Class 2 = 2mbps, Class 6 = 6mbps. I don't think that's the literal translation though, better wikipedia it up.
I personally will find it very difficult to use a 16GB Class 2 card since I do a lot of transferring between computer and phone. I transfer videos, music, comics, and very nice photos.
Click to expand...
Click to collapse
megabitpersecond !!!! you mean megabytepersecond
mbps =megabit
mB =megabyte
Class 6 = 6 megabyte
So you are wrong 8 times
I have a 16 gb class 2 sandisk in my phone and i have seen white speeds up to at least 5 MB/s. So i am wery satisfied with card.
Does the class only affect speed when copying files, or does it matter when using apps and such, watching videos, viewing photos? I ask because Class 6 is really expensive in my country
Is it possible to get 32gb c4?
kazim said:
Does the class only affect speed when copying files, or does it matter when using apps and such, watching videos, viewing photos? I ask because Class 6 is really expensive in my country
Click to expand...
Click to collapse
Yea i'm wondering about that two. I don't really care about speed regarding copying files from pc to phone, but i would be worried about watching videos and lags and and all.
Will.1 said:
Yea i'm wondering about that two. I don't really care about speed regarding copying files from pc to phone, but i would be worried about watching videos and lags and and all.
Click to expand...
Click to collapse
As far as I know it is only write speed. Meaning when you copy data TO your card, read speed on my card is a lot faster then write speed.
But that also means that if you record 720p video to your sd card it matters if your card is fast enough...
But just get yourself a SANDISK CLASS 2. as I said I have no problems with speed of that card..
http://www.hexus.net/content/item.php?item=27835
Fremont, California, USA, December 6, 2010 - Patriot Memory, a global pioneer in high-performance memory, NAND flash and computer peripheral solutions today announced the addition of 16GB and 32GB LX Series microSD High Capacity (SDHC) cards. These large capacity cards meet SD Associations Class 10 specifications enabling them to deliver high performance to today’s smartphones and other digital devices.
“Today’s mobile devices have evolved from simplistic phones to multi-functional tools capable of handling email, music, photos and more,” says Meng Jay Choo, Patriot’s Flash Product Manager. “Smartphones have become a part of our everyday lives letting us connect with each other. Adding 16GB and 32GB storage solutions let consumers expand the capabilities of these devices.”
Patriot’s 32GB LX Series microSDHC Class 10 cards are capable of recording over 10 hours of HD video and more than 10,000 photos.* These cards also come with a full SD adapter that allows them to be used in a variety of devices such as digital cameras, HD camcorders, tablets and more.
32GB LX Series microSDHC
Model #SF32GMCSDHC10
UPC:0815530010883
16GB LX Series microSDHC
Model #SF16GMCSDHC10
UPC:0815530010876
Click to expand...
Click to collapse
Wonder how much it'll cost...probably not something I can afford right now, but hopefully the 32GB sandisk card I ordered during black friday gets out of backorder so I don't have to consider buying this now
just in time for the Nexus line to lose its microSD slot.
Never mind it was SD not micro.
hmm... ive been contemplating a larger card for my N1... looks like some more options are coming my way...
Patriot cards will now fail at record speed!
Best 32GB Micro SD Card for Nexus One
If you are looking for a good, high capacity, micro sd card for your Nexus One, you need to get the SanDisk 32GB microSDHC (cat. #B003WGJYCY). I bought mine in Amazon for $81.44, and right now is $104.95. Although is a class 2 card, I am getting speeds of 6MB for writing and 8MB for reading, with no lag at all when playing music, movies or using the picture gallery. I highly suggest that you keep your eyes open for this card, so you can buy it when it comes on sale.
I got in on a sale from sandisk where it was $56.99
Same card as the VZW TADP-32GBG?
http://www.verizonwireless.com/b2c/store/accessory?action=accessoryDetails&archetypeId=12214
I recommend the Kingston 16GB Class 10 is very fast, I use it without problems in my N1
although now I want the patriot
lexar has released a class 10 32gb
Good find!
I find myself upgrading my microSD too often. First, I had a 4gb class 4, then a 4gb class 6, then 8gb class 6, now a 16gb class 6 32gb class 10 sounds pretty juicy though!!
Bloodflame said:
Good find!
I find myself upgrading my microSD too often. First, I had a 4gb class 4, then a 4gb class 6, then 8gb class 6, now a 16gb class 6 32gb class 10 sounds pretty juicy though!!
Click to expand...
Click to collapse
It's available for around $110 on Amazon or $149.99 straight from Lexar but it appears to be out of stock atm.
Bummer
I got one of these Patriot 32GB Class 10's and it didn't work very well for me.
Droid 2 Global - Rooted - Stock ROM
Initially I found, even if plugged directly into my computer the transfer speeds were less than ideal, getting 5.5-8MB/s at best. If the SD was in the phone and I was transferring my 4MB worth of important data (rest could be transferred later) and the transfer would fail. Get i/o errors, further investigation showed that the mount to the computer was lost, but still appeared to be mounted on the phone.
I got my data on there by direct connecting the card to my computer using a USB adapter I had on hand.
When the card is in the phone it works fine for a while, until of course you try to access something on the card. Install an apk from there, access music, run Titatinum, whatever. The task misbehaves; the progress bar will be running and you can press home and do whatever, but if you let the screen go to sleep you cant get it to wake up. If you don't let the screen go to sleep the task seems to hang indefinitely.
I tried a few things, FAT32 used to have a partition limit of 32GB, and this card showed up as a 33GB filesystem. I tried shrinking the filesystem a bit (30GB) to see if that was the issue, but no luck there. I tried doing a format using the phone, maybe they had something they do there. No go.
My instincts told me not to go with Patriot, I should have listened to them. I am willing to try suggestions if anyone has to get this going, but in the meantime I am just going to stick with my 16c2 by Kingston.
Maybe I should have consulted compatibility first?
http://www.patriotmemory.com/support/flashSupportp.jsp
I notice there are a lot of HTC phones on the compatibility list, but not much in the way of Moto support.
Owell, will sell it to a coworker who has a myTouch 3G
SanDisk 32GB microSDHC (cat. #B003WGJYCY)
cgjjaf said:
If you are looking for a good, high capacity, micro sd card for your Nexus One, you need to get the SanDisk 32GB microSDHC (cat. #B003WGJYCY). I bought mine in Amazon for $81.44, and right now is $104.95. Although is a class 2 card, I am getting speeds of 6MB for writing and 8MB for reading, with no lag at all when playing music, movies or using the picture gallery. I highly suggest that you keep your eyes open for this card, so you can buy it when it comes on sale.
Click to expand...
Click to collapse
Currently $76 - I do wonder how it will be with Apps2SD though where at least Class 4 is recommended?
http://www.amazon.com/SanDisk-32GB-microSDHC-Memory-Package/dp/B003WGJYCY/
Whoever has this card do extended IOPs data test on it please ATM I am compiling data on Kingston 32GB Class 4 microSDHC. I know this card will never get to use C10 nativly in device as I do have my doubts about data integrity due to data corruption, lets see some actual data in device use without card reader.
Dropped Kingston for Patriot
lol nice and here I am once again getting away with another OJ style crime I hope no one works at Kingston here lol. At least I extracted valuable data which Ill post shortly so other folks can decide which to buy.
Email to Kingston said:
Dear Tech Support,
Product Number: SDC4/32GB-2ADP
Problem: This part has never worked. Well, a lot of users are having issue with Kingston 32GB microSDHC Class 4 cards as it seems its inferior, it took me 27min to transfer just 198MB. Where the same task is done on SanDisk 16GB Class 2 in under 2min. So why is Kingston producing piece of **** card and selling them for 100+? Alot of users in various forum can verify that this is piece of ****. This is bad batch so ill deal with Kingston for RMA directly.
Troublshooting done: Seems the speed is improved when the item is directly allocated in memory thus saving time from accessing it and transferring it. I am not sure if the device is using SD 2.0 but other people with SanDisk 32GB Class 2 is outrunning this Class 4 card. We are only getting like 700KB/s which is no where near class 4 standard.
Click to expand...
Click to collapse
Email from Kingston said:
Dear Customer,
Sorry to hear you’re having this issue with your SDC card. Please provide all the letters, codes and numbers from the front and back of the SDC card itself and not from any adapters it may have came with. If it’s more feasible to take a digital picture please do so and send it to me. Before sending in the pictures, please view them to be sure they are not blurry. The data off the card is needed in order to properly identify it and proceed with a replacement if one is needed. Alternatively, you may have it replaced my apologies for any inconvenience this may cause you.
Also, please provide the exact make and model of your phone.
If you have any other questions or concerns, please feel free to reply to this e-mail with full email history. Thank you for using Kingston on-line technical support.
Regards,
Kingston Technology
Technical Support
Click to expand...
Click to collapse
So after I got the email I called them directly and spoke to them on the phone and got RMA for full refund lol with no stocking fee and free UPS shipping label.
RMA & Shipping said:
Thank you for requesting a Return Merchandise Authorization (RMA) number. Please remember to cut out the included RMA Identification Label and firmly tape it to the outside of the shipping box with clear tape. It is important to attach this label to ensure that your RMA is processed in a timely manner.
RMA Summary:
Customer ID: [email protected]
Account Number: XXXXXXXX
RMA Number: XXXXXXXX
RMA Type: Refund
Restocking Fee: $0
RMA Item List: 1 x ($159.00) FLASH 32G|KST SDC4/32GB-2ADP R $159.00
Your UPS RMA Return Shipping Label has been created. Below is your Shipping Label Order confirmation, along with instructions for accessing and printing your label. Please keep a copy of this email for your records.
Sales Order Number: XXXXXXXX
RMA Number: XXXXXXXX
UPS Shipping Label Tracking: XXXXXXXXXXXXXXXXXX
UPS Shipping Label Date: 01/20/2011 16:59:15
Click to expand...
Click to collapse
I call that owned for making me thoroughly testing the card
The data below is the actual IOPs from System (USB: Standard-A) to Device (USB: Micro-B) via USB (USB 2.0/SD 2.0). I am not using any type of card reader for this test as we only want the actual data rate of the card itself natively while its mounted in the device.
Subject: Kingston 32GB Class 4 (4MB/s) microSDHC.
Code:
df /dev/mnt/sdcard
File system: FAT32 (0x0c)
Used space: 16.0 KB (16,384 bytes)
Free space: 29.8 GB (32,073,891,840 bytes)
Sequential Test Data (Block Size = 1024KB|0 Fill = 0x00)
Read [MB/s]: 13.07+11.72+13.11=37.9/3=12.63
Write [MB/s]: 4.080+3.339+1.592=9.011/3=3.00
Sequential Test Data (Block Size = 1024KB|1 Fill = 0xFF)
Read [MB/s]: 13.07+13.10+11.61=37.78/3=12.59
Write [MB/s]: 3.659+2.618+3.607=9.884/3=3.30
Mode: Low level R+W+V initialization
Data volume: 30588MBytes
Patterns: 18 sets, 8 of "walking one", 8 of "walking zero", 55h, AAh
Writing speed [03:24:28]: 2.49 MByte/s
Reading speed [00:44:20]: 11.5 MByte/s
Burst write: 4.0+4.0+4.0=4.0 MB/s
Burst read: 10.0+9.0+9.0=9.33 MB/s
lol I am glad I socialed them in to accepting it I had this card for few months and only reason I kept it was due to higher read still was better than SanDisk's read speed which was sustained around 7-8MB/s. Hopefully the plan don't backfire as I already placed order with NewEgg and still have to ship it back to Kingston. So in the end saved $60 or so and got class 10 card with 1gb extra space.
kzin said:
I got one of these Patriot 32GB Class 10's and it didn't work very well for me.
Droid 2 Global - Rooted - Stock ROM
Initially I found, even if plugged directly into my computer the transfer speeds were less than ideal, getting 5.5-8MB/s at best. If the SD was in the phone and I was transferring my 4MB worth of important data (rest could be transferred later) and the transfer would fail. Get i/o errors, further investigation showed that the mount to the computer was lost, but still appeared to be mounted on the phone.
I got my data on there by direct connecting the card to my computer using a USB adapter I had on hand.
When the card is in the phone it works fine for a while, until of course you try to access something on the card. Install an apk from there, access music, run Titatinum, whatever. The task misbehaves; the progress bar will be running and you can press home and do whatever, but if you let the screen go to sleep you cant get it to wake up. If you don't let the screen go to sleep the task seems to hang indefinitely.
I tried a few things, FAT32 used to have a partition limit of 32GB, and this card showed up as a 33GB filesystem. I tried shrinking the filesystem a bit (30GB) to see if that was the issue, but no luck there. I tried doing a format using the phone, maybe they had something they do there. No go.
My instincts told me not to go with Patriot, I should have listened to them. I am willing to try suggestions if anyone has to get this going, but in the meantime I am just going to stick with my 16c2 by Kingston.
Click to expand...
Click to collapse
I wish I had read this before ordering my Patriot 32GB from Newegg. I am having the exact same issues as you sound like you had.
Telus HTC Desire - Rooted - LeeDroid 2.3d
When the screen sleeps, I can't always get it to wake up and am constantly restarting the phone. I was worried it was an issue with LeeDroid, and am currently troubleshooting my phone, but it sounds like once I re-insert my 8gb card I'll be fine. Thanks for the post. Amazed that they can build a card with limited compatibility as such but I suppose that's why it's cheaper. If I figure out otherwise, i'll post again.
Not compatible with Samsung Epic 4G
My wife and I purchased two of these for our Samsung Epic 4G phones, and unfortunately this card does not seem compatible with our phones. It will format and initially seem to read the card, however after a short while both phones gave a damaged SD card error and the cards needed to be reformatted. After the second reformat, we tried to give them another go, unfortunately files just continue to be corrupted. Very disappointed.
dculp said:
My wife and I purchased two of these for our Samsung Epic 4G phones, and unfortunately this card does not seem compatible with our phones. It will format and initially seem to read the card, however after a short while both phones gave a damaged SD card error and the cards needed to be reformatted. After the second reformat, we tried to give them another go, unfortunately files just continue to be corrupted. Very disappointed.
Click to expand...
Click to collapse
I had the exact same issue with the Patriot 16GB Class 10. Perfect on the computer using every test imaginable - but as soon as my Nexus One tries to use it corruption occurs.
Back to SanDisk, I guess.
Coming from HD2 with class 10 microsd. I had class 10 because android was installed in the sdcard (before the nand hack).
Now, since the sensation is running from internal, is a class 4 32GB good enough?
Coz I won one for $29 bux free shipping lol...
I think the phone comes with a stock 16gb class 2 card.
Edit. Found a thread that asks that question Lol.... Looks like it comes with a class 2.
http://forum.xda-developers.com/showthread.php?t=651438
bangsters said:
Coming from HD2 with class 10 microsd. I had class 10 because android was installed in the sdcard (before the nand hack).
Now, since the sensation is running from internal, is a class 4 32GB good enough?
Coz I won one for $29 bux free shipping lol...
Click to expand...
Click to collapse
Depending on the usage your Class 4 may actually be better than a Class 10. The SD card class speeds were developed with a narrow focus on sequential write speed because that is that cameras/video cameras need in order to write the information to the card as it is being created by the camera. But when used in a phone you don't really use it in sequential read/write it is more often than not used with random read/write, and often lower class cards perform better in these tasks than higher class cards.
http://forum.xda-developers.com/showthread.php?t=1150369
I have a 32gb class 4 card in my phone and its giving me no problems at all.
So in my experience its good to go
As someone who regularly likes to move giant files over, I appreciate the Class 10. If you're just moving music and stuff occasionally...you'll be fine.
Thanks. I was initially looking for a class 10. But since it was a steal at $29 bux with a minute left, I went ahead with the bid. didn't expect to win but I did, so might as well use it with the sensation
Very good programs for testing your memory are:
h2testw_1.4 in order to verify that the XXGB card you bought is actually XXGB
CrystalDiskMark3_0_1b in order to do a benchmark to see what is the real speed of your card. The apps on android are not reliable for these tests.
Once I get the card I'll post my feedback. Coming from a 16GB class10 hopefully I won't notice the difference.
I have a sandisk Micro SD 32Gb class4 for my HTC Sensation. So far so good, I have not found any problem with it . Also I bought it from HTC Showroom in Vietnam with a great deal (about $42 only)