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MicroSD for Froyo - general consensus?

Hello,
Now that Froyo more or less came out and apps will start having Apps2SD function, it's time for a MicroSD upgrade.
What I want is on-phone performance - that running heavy 3D games on SD would perform as smoothly as if it was on internal memory. Is there a general consensus on what brand/class would suffice, and what is overkill? I have no concern over data cable transfer speed, as I'm pretty sure the phone will limit the speed much before the SD card does.
I'm looking at this Sandisk 16gb MicroSDHC Class 2 for $35 after shipping:
http://www.amazon.com/SanDisk-Flash...ref=sr_1_1?ie=UTF8&s=pc&qid=1275145563&sr=1-1
Anyone know if this would suffice?
Past threads have always went on tangents about good brand vs knock offs, how class is important vs. a marketing ploy, etc etc. Has a general consensus been reached in the xda community over what is sufficient but not overkill for onboard performance? Perhaps people who have already ran App2SD and use games and videos a lot have some input.
Thanks

I have a Top Ram 16 Gig class 6 and I think I paid about the same as you looking to pay for a class2. I also have a class2 that I have had for over a year. I used to use it in my blackberry. It still works and it is made by one of the cheap manufacturers.

Argh, I'm suffering from chronic SD corruption. So I'm in the market for a new chip. Think I'll spring for a 32gb this time. What's the latest on one that's both compatible and fast? And cheap too, that would be nice, links appreciated.

Considering that due to the amount of RAM the N1 has your main apps will be loaded already so card speed is not a significant factor, unless you use lots of different apps on a regular basis.
A faster card is beneficial mostly for the time i takes when I am loading up new music and possibly vids if you use it for that

This is the first 32gb MicroSD card I have seen "In Stock" Pretty expensive for a class 2 though.
http://www.buy.com/prod/sandisk-sds...crosdhc-32-gb-retail/q/loc/101/215191110.html

!!
Im not sure the nexus 1 can handle a 32GB card , wow that's a lot lol, but you can get one for like $30 on ebay... http://bit.ly/9J7u2S

You can get a 16gb class 10 for about $90.00.
http://www.amazon.com/dp/B0036V5DGG...e=asn&creative=380341&creativeASIN=B0036V5DGG

frankzua77 said:
Im not sure the nexus 1 can handle a 32GB card , wow that's a lot lol, but you can get one for like $30 on ebay... http://bit.ly/9J7u2S
Click to expand...
Click to collapse
Micro SDHC is a standard that supports up to 32gb. Of course it can handle it just fine.
I run a 16gb Class 6 in mine, works fine

bewar ebay, there a lot of folks selling fake cards. They even read as what they were sold as but then fill up mighty quick............
The class is not needed I don't think
I have a class six and have been running games on it from sd for 3 months cant tell a bit of difference. I run linpack from sd and it works fine too!

the only real 32gb card is found here., http://www.sandisk.com/products/mobile-memory-products/sandisk-microsdhc

frankzua77 said:
Im not sure the nexus 1 can handle a 32GB card , wow that's a lot lol, but you can get one for like $30 on ebay... http://bit.ly/9J7u2S
Click to expand...
Click to collapse
no f-ing way that is real for $30

GldRush98 said:
Micro SDHC is a standard that supports up to 32gb. Of course it can handle it just fine.
I run a 16gb Class 6 in mine, works fine
Click to expand...
Click to collapse
I'm running a 32gb Sandisk Class 2 in my Nexus as of last Friday. No problems (apart from a looooong time to refresh the media library after resyncing my music).

You can not get a genuine 32GB Micro SD card for US$40.
A good class 2 card (2MB/s) will offer you the same performance as any other class in your phone.
The limitation is not the speed of the card.
Buy a brand name card with the capacity you require and be done with the complexity.

djmcnz said:
You can not get a genuine 32GB Micro SD card for US$40.
A good class 2 card (2MB/s) will offer you the same performance as any other class in your phone.
The limitation is not the speed of the card.
Buy a brand name card with the capacity you require and be done with the complexity.
Click to expand...
Click to collapse
I don't know too much about transfer rates but basically what you're saying is that a a brand name class 2 card will be just as good as say a class 6? I'm in the market for a new SD card as well, and the class 6 cards are much more expensive. I'm wondering if they're worth it.

jasrups said:
I don't know too much about transfer rates but basically what you're saying is that a a brand name class 2 card will be just as good as say a class 6? I'm in the market for a new SD card as well, and the class 6 cards are much more expensive. I'm wondering if they're worth it.
Click to expand...
Click to collapse
No, in a phone they're not worth it at all and people who say so are either selling snake oil or are embarrassed because they've paid for one and are foolish for doing so.
The best I can do just at the moment is this:
wikipedia said:
In applications that require sustained write throughput, such as video recording, the device may not perform satisfactorily if the SD card's class rating falls below a particular speed. For example, a camcorder that is designed to record to class 6 media may suffer dropouts or corrupted video on slower media.
Click to expand...
Click to collapse
The Nexus, like probably every other phone out there, is a) not typically used for high rate sustained write activities and b) is designed to write to class 2 media to begin with.
If you have a large, highly fragmented sd card higher speeds will help. This of course is easy to avoid in the first place.
Get a higher capacity, class 2, brand name card for the same money and you're away laughing.
NB - If somebody waves a magic wand and all of a sudden the Nexus can record video at 1080p at a high enough bitrate then perhaps my advice would be invalidated... but don't hold your breath for that to happen...

djmcnz said:
No, in a phone they're not worth it at all and people who say so are either selling snake oil or are embarrassed because they've paid for one and are foolish for doing so.
The best I can do just at the moment is this:
The Nexus, like probably every other phone out there, is a) not typically used for high rate sustained write activities and b) is designed to write to class 2 media to begin with.
If you have a large, highly fragmented sd card higher speeds will help. This of course is easy to avoid in the first place.
Get a higher capacity, class 2, brand name card for the same money and you're away laughing.
NB - If somebody waves a magic want and all of a sudden the Nexus can record video at 1080p at a high enough bitrate then perhaps my advice would be invalidated... but don't hold your breath for that to happen...
Click to expand...
Click to collapse
Thanks for the info man! I was obviously misinformed, you just saved me a bunch of money

so just curious. now that CM 5.0.8 comes with 720p recording, would a class 2 still suffice?

I am also searching the web recently to look for a cost-effective high vol microSD. My finding is: don't 100% trust the "class" specified by mfr. I used ATTO Disk Benchmark to test two 8G microSD that I have: Transcend 8G Class 6 and Sandisk 8G Class 4.
<Transcend Class6> Write: 6-10MB/s Read: 16MB/s
<Sandisk Class 4> Write: 14MB/s Read: 20MB/s
From similar test results on the web, it seems that Sandisk uses to under-state the performance of their card. Finally I get a Sandisk 16G Class 2 for my N1, and here is the test result with the same setting:
<Sandisk 16G Class2> Write: 7MB/s Read: 20MB/s
Although Sandisk only specifies it as class 2, it actually performs like a class 6.
I suspect the importance of the speed of the SD card too, coz I think the write speed into ROM, should be way slower than 6-7MB/s (correct me if I am wrong ^_^)... If the speed of v2.1 w/o app2sd is acceptable to you, then v2.2 with 6-7M write speed card should be logically fine with you.

fshek said:
I am also searching the web recently to look for a cost-effective high vol microSD. My finding is: don't 100% trust the "class" specified by mfr. I used ATTO Disk Benchmark to test two 8G microSD that I have: Transcend 8G Class 6 and Sandisk 8G Class 4.
<Transcend Class6> Write: 6-10MB/s Read: 16MB/s
<Sandisk Class 4> Write: 14MB/s Read: 20MB/s
From similar test results on the web, it seems that Sandisk uses to under-state the performance of their card. Finally I get a Sandisk 16G Class 2 for my N1, and here is the test result with the same setting:
<Sandisk 16G Class2> Write: 7MB/s Read: 20MB/s
Although Sandisk only specifies it as class 2, it actually performs like a class 6.
I suspect the importance of the speed of the SD card too, coz I think the write speed into ROM, should be way slower than 6-7MB/s (correct me if I am wrong ^_^)...
Click to expand...
Click to collapse
huh that's interesting. i just might pick that up from amazon then..

I Dont think fragmentation makes any difference to write speed, these are not mechanical devices like hard disks.
Also defragging is pointless and shortens the life of the card by increasing the number of writes.

Best microSD? What class should I go for?

Since I may get an HTC Desire HD to replace my slightly ageing iPhone 3GS, I'll be needing at least a 16GB microSD to store my stuff on.
I was looking through Amazon and found a 16GB SanDisk one for £22, but it's only class 2 which I understand is pretty crap, right? I've had experience with bad microSDs and it wasn't pleasant (be very wary of Nokia branded cards).
What's the minimum class I should get for a decent experience and so I can record decent video?

Class 4 is ok, class 6 is better, but i think that there is no need for faster than class 4.
I had 8gb class 4 kingstone on my HD2 and i had none problem or lag with anything. Class 4 is double speed than class2.
Ill go for 16gb class 4

OK, thanks
One more question: is there a way to encrypt the contents of the card?

Not that I know off and still be able to use with the phone vi think with htc's new thing you can wipe it remotkey also if it gets stolen

How about encrypting the phone itself then? That's where all my emails etc will be anyway, presumably.
Does the remote wipe include the microSD though? I'm not sure if HTC has confirmed it does.

I believe the D'HD should have enough phone RAM that you can keep sensitive material like emails off the SD. In which remote wipe should be sufficiently safe. The current weakness though is that the unit will not self format after say ten failed screen lock attempts. A thief can literally sit there tapping away until entry. Surprised such a feature hasn't creeped into the ROMs yet.
Sent from my Nexus One using XDA App

HTCinToronto said:
I believe the D'HD should have enough phone RAM that you can keep sensitive material like emails off the SD. In which remote wipe should be sufficiently safe. The current weakness though is that the unit will not self format after say ten failed screen lock attempts. A thief can literally sit there tapping away until entry. Surprised such a feature hasn't creeped into the ROMs yet.
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
I'm planning to flash some unofficial ROMs to it anyway (that's where the fun is in an OS like Android anyway ), so d'ya think such a feature can be implemented in one of those?
And do you ever think that Android will get "on-the-fly" content encryption like iPhones and BlackBerries?

If you don't use Apps2SD there is shouldn't be any need for faster than class 4 I think.
Watching p0rn generally doesn't need much speed.

wywywywy said:
If you don't use Apps2SD there is shouldn't be any need for faster than class 4 I think.
Watching p0rn generally doesn't need much speed.
Click to expand...
Click to collapse
I was thinking more along the lines of recording the video, I remember reading somewhere that to record 720p at a decent frame rate you needed a high class.

If HTC do it right, with the help of a intermediate buffer, into RAM or even internal memory disk and after writing to the sdcard, there's no need for a class 4 or 6 card. A class 2 will suffice
We are talking almost of a computer not a digital camera or a digital recorder that usually don't have this amount of RAM or internal memory

Correct...
I have been saying this in other topics.
The later phones with large storage areas write their camera data first to the internal memory.
As such you can happily get away with a Class 2.
It's only when you are transfering data between the phone & a PC over USB where you will notice any speed differences.

OK, thanks
I also found out that there's an Android app called MyStash which will encrypt individual files, could come in handy. I'd still prefer on-the-fly encryption, but hey.

MaybachMan said:
How about encrypting the phone itself then? That's where all my emails etc will be anyway, presumably.
Does the remote wipe include the microSD though? I'm not sure if HTC has confirmed it does.
Click to expand...
Click to collapse
The DHD has enough horsepower to run on-the-fly encryption.
You can achieve this quite easily:
What you need to do, is basically build static copies of lvm, device-mapper and cryptsetup.
Add vgchange -ay, and cryptsetup luksOpen to initrd just before mount.
An easy way to realise key reading is to save your key on your microsd card (this of course implies that your sdcard is mounted earlier), and make cryptsetup read from it:
cryptsetup luksOpen /dev/your_vol/your_lab some_id < /mnt/sdcard/my_key.txt
it only makes sense to encrypt /data/data, /data/misc and /data/system, of course.
You can always encrypt the whole /data if you want.
The only problem would be to fit the static binaries into your initrd (you can build some of them with busybox and integrate it).
That's it.
I have been thinking about encrypted aufs for a while, but since my only device is the "old" Hero, I couldn't bring that plan to execution yet.

Beards said:
Correct...
I have been saying this in other topics.
The later phones with large storage areas write their camera data first to the internal memory.
As such you can happily get away with a Class 2.
It's only when you are transfering data between the phone & a PC over USB where you will notice any speed differences.
Click to expand...
Click to collapse
But then, I have seen several threads with people complaining about the low 720p video recording fps they had with their Desire. Replacing the SD card for a faster one improved their fps.
A faster SD card was the difference between bad 720p video performance and acceptable performance.

BigMango said:
But then, I have seen several threads with people complaining about the low 720p video recording fps they had with their Desire. Replacing the SD card for a faster one improved their fps.
A faster SD card was the difference between bad 720p video performance and acceptable performance.
Click to expand...
Click to collapse
The reason they would complain is because the Desire has very little internal storage for buffering compared to the likes of the DHD & Galaxy S.
On these devices it does not matter what class rating you use.... the video file is first written to internal memory storage before being transferred to microsd.

Beards said:
The reason they would complain is because the Desire has very little internal storage for buffering compared to the likes of the DHD & Galaxy S.
Click to expand...
Click to collapse
Are you sure? As far as I know, the Desire should have more ram with 576Mb, and the Galaxy S 512Mb. (DHD of course has 768Mb).
The Galaxy also has a 8Gb / 16Gb internal SD card. But here we would again be comparing SD card speeds...

Go for class4 too be sure and ready for perfect recording then

BigMango said:
Are you sure? As far as I know, the Desire should have more ram with 576Mb, and the Galaxy S 512Mb. (DHD of course has 768Mb).
The Galaxy also has a 8Gb / 16Gb internal SD card. But here we would again be comparing SD card speeds...
Click to expand...
Click to collapse
We've already crossed swords in another topic mate.... I don't have the strength to start another here....

Beards said:
We've already crossed swords in another topic mate.... I don't have the strength to start another here....
Click to expand...
Click to collapse
There's no crossing of swords at all buddy. Just some nice sharing of different points of views and experiences; for our own benefits of us all

Whatever the truth is...i'll buy class4 and everybody happy

[Q] Best SD card ?

Hello,
I have a 8go storage for now but I'm getting close to be out of space (I have like 700mo left).
I would like to buy a 16go sd card but I'm not sure which one...
I have a nexus one rooted (with A2SD) so I don't really know what I should or shouldn't take. (because 20$ of difference between two "same" card is suspicious )
Could you help me ?
Best regards,
rXp>!<

Sandisk is a reputable manufacturer, Kingston is another, but make sure you also use a reputable retailer so that you don't end up with a knock-off.
The Nexus One can't utilise speeds above Class 2 so unless you are planning on using the card in a dedicated card-reader a lot, or are thinking of future use, i wouldn't worry about spending premium amounts on faster cards.

min. class 4 is a must but you could look for class 6

DirkGently1 said:
The Nexus One can't utilise speeds above Class 2.
Click to expand...
Click to collapse
And your source is?

DirkGently1 said:
The Nexus One can't utilise speeds above Class 2
Click to expand...
Click to collapse
Of course it can, delve into the 720p recording thread...

I found class 2 or class 10. Better go for a class 10 or it is not recommended ?

OrganizedFellow said:
And your source is?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=937622&highlight=slow+transfer+usb
http://forum.xda-developers.com/showthread.php?t=711175&highlight=slow+transfer+usb
http://forum.xda-developers.com/showthread.php?t=739643&highlight=slow+transfer+usb
http://forum.xda-developers.com/showthread.php?t=680439&highlight=slow+transfer+usb
http://forum.xda-developers.com/showthread.php?t=656908&highlight=slow+transfer+usb
http://forum.xda-developers.com/showthread.php?t=736751&highlight=slow+transfer+usb

The speed from N1 to PC is not the same as the internal speed.

Rusty! said:
The speed from N1 to PC is not the same as the internal speed.
Click to expand...
Click to collapse
This is true. My PC transfer speed is insanely slow. Took over 6 hours to transfer 8GB of data (was re-partitioning and did not have my microsd adapter)
A 16GB class 4 chip should be about $30, unless you jump on a special deal.

Rusty! said:
The speed from N1 to PC is not the same as the internal speed.
Click to expand...
Click to collapse
Obviously, but transferring files is the only reason why you would need a faster card. With the N1 seemingly capped at low speeds..yadda,yadda,yadda...

No it's not.
Recording in HD will require a decent speed, running data/dalvik-cache off SD-EXT will require a decent speed (things are noticeably slower on my C4 when I do that).

I've used a Class 2, Class 4 and Class 6 card on my N1 without any noticeable difference. I've put a clock on metrics like app launch times without any difference in the results.
People who spend extra $$ on faster cards convince themselves that they notice a difference to justify their spend. I wanted my Class 6 to make an improvement in daily usage but it didn't. I have to put it in a card reader so that i get any benefit from it, and that's only justified for transferring large amounts of data as you have to consider the time needed to remove/replace the card.

so personal expierences = fact now?
because I notice a major difference between my class 2 and class 6 in my N1
so that makes a new fact now

Can we have some facts on this issue?
For example, is it faster to take pictures if you have a faster class speed?
Is it faster in executing tasks?
etc.
Anyone have any results?

I'm thinking of getting a class 10 microsd card for record 720p video.

So far I've used Kingmax 16GB Class 10 with no problem.

I just bought a Sandisk 32gb MicroSDHC Class 2, hope it will work fine with everything, need a lot of space for music

I'm using a Patriot 16GB Class 10. Overkill? Maybe - depends on who you ask. But if you're putting the system cache on the card and recording HD video, it certainly doesn't hurt.

jonno2k said:
I'm using a Patriot 16GB Class 10. Overkill? Maybe - depends on who you ask. But if you're putting the system cache on the card and recording HD video, it certainly doesn't hurt.
Click to expand...
Click to collapse
I was thinking of buying that microsd card from PC CASE GEAR.

DirkGently1 said:
Sandisk is a reputable manufacturer, Kingston is another, but make sure you also use a reputable retailer so that you don't end up with a knock-off.
The Nexus One can't utilise speeds above Class 2 so unless you are planning on using the card in a dedicated card-reader a lot, or are thinking of future use, i wouldn't worry about spending premium amounts on faster cards.
Click to expand...
Click to collapse
r u sure it cant handle more than class 2 ? i am not sure, but think its matter of card , HW of N1 is speedygonzales
personaly i would look for something like:
since i cant post link:
ADATA Micro SD 32GB SDHC class 4
Speed (read) : 10~14 (MB/s)**
Speed (write) : 2~5 (MB/s)**
Speed Class : Class 4
its cheap , it worth a try

Sandisk 16Gb class 10 or 31GB class 6

What should I get
A 16 Gb class 10 at 1500 INR
or a 32 Gb Class 6 at 1650 INR
What do you guys suggest...?
Sadly 32 Gb class 10 is not available in India

Do you feel the need to have 32gb, ir is 16gb plenty for you?
Sometimes class 6 outperforms class 10 in test

suku_patel_22 said:
What should I get
A 16 Gb class 10 at 1500 INR
or a 32 Gb Class 6 at 1650 INR
What do you guys suggest...?
Sadly 32 Gb class 10 is not available in India
Click to expand...
Click to collapse
You're not purchasing nand-flash my friend. It will still be an sd card, and the read-write speed for flash memory on phones does not impact performance so much that you'll actually notice the difference in real life. The Class of a card has more significant implications in devices like high-end DSLR digital cameras shooting in data intensive RAW format at >18 Megapixel resolution setting in burst mode, or full 1080p video at 60fps, or even super slo-mo videos taken at speeds like 15000fps! Those are the extreme situations where you'll require a higher speed card.
If i were you, i'd focus less on the class, and go for the deal where i'm getting 16GB of extra memory at only Rs. 150 more! Sounds like a much better deal to me...

Class speeds do help with tasks though, such as HD Recording. It also can affect the speed your apps load up if they are the sd card. In theory, the higher the class of the card, the faster the card.
But this isn't always the case.
Sent from my HTC Desire S using xda premium

enigmaamit said:
You're not purchasing nand-flash my friend. It will still be an sd card, and the read-write speed for flash memory on phones does not impact performance so much that you'll actually notice the difference in real life. The Class of a card has more significant implications in devices like high-end DSLR digital cameras shooting in data intensive RAW format at >18 Megapixel resolution setting in burst mode, or full 1080p video at 60fps, or even super slo-mo videos taken at speeds like 15000fps! Those are the extreme situations where you'll require a higher speed card.
If i were you, i'd focus less on the class, and go for the deal where i'm getting 16GB of extra memory at only Rs. 150 more! Sounds like a much better deal to me...
Click to expand...
Click to collapse
Are you sure about this? What I'm sure about is that apps work smoother when on internal mem than on low class SD, but havn't test the difference between classes yet, but I strongly believe there should be a difference, anyhow will check about it
Sent from my HTC Desire S using xda premium

mawad said:
Are you sure about this? What I'm sure about is that apps work smoother when on internal mem than on low class SD, but havn't test the difference between classes yet, but I strongly believe there should be a difference, anyhow will check about it
Sent from my HTC Desire S using xda premium
Click to expand...
Click to collapse
You are right about apps working faster when on internal memory... but that is nand-flash, solid state flash memory interfaced directly with the mainboard... and IO read-write speeds here are much faster when compared to that done over an sd-card interface. Built in memory on the Mainboard will always be faster as compared to an sd card, no matter what class of card you use. You cannot infinitely keep increasing the speed of a card just by getting a higher class card. There are hardware bottlenecks that cannot be completely bypassed just by changing the card. Also, while this difference may translate into different numbers on a benchmarking scale in the lab, the conversion to real world performance is something the end user will not be able to appreciate. I say this from experience as i have used a class 10 8GB card previously on two devices (including this DS), and am currently using a Sandisk Class 6 16GB one.... and it's all the same to me...
A class 6 card is very very good as far as phones are concerned. I'm not saying that a higher class card is not better than a lower one - it most definitely is! But this topic was to decide the merits of getting a class 10 16GB versus a class 6 32GB, for very similar price. Given that choice, i think the latter makes more sense both practically and financially - it's a more optimal choice IMO.

Recently upgraded from a class 6 16GB to a class 10 32GB. If there is a speed difference I can't detect it. I'd focus on getting the storage space you require. You are not missing anything not having class 10 in the 32GB flavour.

wnp_79 said:
Recently upgraded from a class 6 16GB to a class 10 32GB. If there is a speed difference I can't detect it. I'd focus on getting the storage space you require. You are not missing anything not having class 10 in the 32GB flavour.
Click to expand...
Click to collapse
Exactly my point!
Thank you.

Memory cards !!! Class 4 or 6 or 10 ?

My 8GB Memory Card in my Sensation XE if almost full now, and i plan to upgrade to a 16 GB MMC. I know that Class 4,6 and 10 have Read/Write speed or 4/6/10 MB/s respectively on the computer.
I want to know, how does these different classes affect when running in a phone except the obvious copying files thing.
Thanx in advance.

I believe as you said that the same holds true for the device. It has to do with the speed. I also just upgraded myself to a 32 . This is the first time I've used a 32. But I only have a class 4 ( same class that came with the device) as I really couldn't afford the higher class at this point. I've had no problems so far and it seems to be working well. I would like in the future to obtain a higher class and see the difference for myself.as I also wonder what kind of differences it will make on our device. Best wishes to you!
Sent from my Sensation Z710e using xda premium

no budget stated so i'd say go for sandisk 64gb sdxc.
Have one right in my sensation for a few weeks already

back in my htc magic days, i was always told class 4 = too slow, class 6 = perfect, class 10 = too fast (yea, too fast)
of course android came a long way since then but i got myself a class 6 anyway

Well, I don't know if it is the same for micro sd's but in my GoPro I have a class 10 32gb SD card previously having a class 4. I would say that since I have upgraded to a class 10 my copying speeds to and from my camera have halved and the footage that I get seems to be of a higher quality. So I would say get the highest class you can afford. Hope that helped!

The difference in speed is VERY noticeable when taking pictures on a class 6 card compared to a class 4 card. There's very little delay when the picture is saved.
Class 6 was well worth the money in my opinion.
Edit: oh, and also, there's no lag when playing high bitrate video.
Sent from my wonderful HTC Sensation

I notice faster restore and backup in titanium backup and smooth 1080 p playback and recording in my 32GB class 10 card
Sent from my HTC Sensation Z710e using Tapatalk 2

Okay, Thank you everyone
I think i am gonna go with "Transcend Memory Card MicroSDHC 16GB Class 10". I'm gonna order it and will post what difference i notice ! :highfive:
your posts really helped

i read in the official sd site that in order to achieve optimal performance you must match the speed class of the card with the one of the card reader. for instance, if the sensation's card reader is rated class 4 faster cards will provide no benefit -- and a few drawbacks, too. the problem is getting to know what class the sensation's card reader is mounting

Class 10 is usually optimised for digital photography/video where small numbers of very large files are written. Smartphones read and write hundreds or thousands of small files and hence might preform better, as the card fills up with a class 6.
Having said that I doubt anyone would be able to really notice the difference in real life...
Also, go for at least the 32gb card, price difference is usually tiny and you'll take a while to fill the larger card.

boomboomer said:
Class 10 is usually optimised for digital photography/video where small numbers of very large files are written. Smartphones read and write hundreds or thousands of small files and hence might preform better, as the card fills up with a class 6.
Having said that I doubt anyone would be able to really notice the difference in real life...
Also, go for at least the 32gb card, price difference is usually tiny and you'll take a while to fill the larger card.
Click to expand...
Click to collapse
bought 2x 64gb U1(c10) sdxc and filled with dramas/movies in 1night after I bought these, so capacity filling really depends on people

Good call with the transcend card. As far as I know they are the only ones with ecc on board, and I have never had one fail.
Sent from my HTC Sensation using xda app-developers app

crashDebug said:
i read in the official sd site that in order to achieve optimal performance you must match the speed class of the card with the one of the card reader. for instance, if the sensation's card reader is rated class 4 faster cards will provide no benefit -- and a few drawbacks, too. the problem is getting to know what class the sensation's card reader is mounting
Click to expand...
Click to collapse
What do you suggest then ?

boomboomer said:
Class 10 is usually optimised for digital photography/video where small numbers of very large files are written. Smartphones read and write hundreds or thousands of small files and hence might preform better, as the card fills up with a class 6.
Having said that I doubt anyone would be able to really notice the difference in real life...
Also, go for at least the 32gb card, price difference is usually tiny and you'll take a while to fill the larger card.
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Yeah, your'e right. My friend who is a photographer by profession told me the same thing.
I don't know how its where you are but where i am, i see that Transcend 16GB class 10 is Rs.885 / $16 / GBP 10 and the 32 GB Transcend Class 4 is Rs.1400 /GBP 16/ $ 25 so it kinda gets expensive.
There is one from a brand called 'Strontium'...the class 10 is cheaper than Transcend Class 4......32 gigs. But have you heard the name before ? i havn't...

Louer Adun said:
Good call with the transcend card. As far as I know they are the only ones with ecc on board, and I have never had one fail.
Sent from my HTC Sensation using xda app-developers app
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Yeah ! "its the brand i trust" same old line !
I'm gonna thank every1 tomoro !...i am limited 2 8 thanks per day so...

Echo237 said:
My 8GB Memory Card in my Sensation XE if almost full now, and i plan to upgrade to a 16 GB MMC. I know that Class 4,6 and 10 have Read/Write speed or 4/6/10 MB/s respectively on the computer.
I want to know, how does these different classes affect when running in a phone except the obvious copying files thing.
Thanx in advance.
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Using a Patriot 32 GB class 10, without any problems. Faster than 16 GB class 6.
Go for it.:good:

Echo237 said:
What do you suggest then ?
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well, if there is no means to figure the reader's speed out, i would not waste money on a class 10 and play it safe with a class 6 or 4. at the end of the day i am no speed / stats / benchmark freak, and prefer to solve actual problems rather than having the fastest stuff available. i'd take the most stressful task in real life (namely: playing 1080p video without hiccups) and then opt for the cheapest card that handles it without a flaw

I have a Sandisk Extreme Pro 16GB card on my sensation. Really have much greater speeds when transferring data between PC and card. My nandroid backups used to take about 300 seconds with class 4 card, which have come down to about 150-160 seconds with new one. Also I'm using hard swap, which benefits using a higher speed memory

jyo1 said:
I have a Sandisk Extreme Pro 16GB card on my sensation. Really have much greater speeds when transferring data between PC and card. My nandroid backups used to take about 300 seconds with class 4 card, which have come down to about 150-160 seconds with new one. Also I'm using hard swap, which benefits using a higher speed memory
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Okay, Thank you
Btw...what is hard swap ?

If you root your phone then go for class 10.
But if you stay on stock rom there is no need for fastrr then class 6.
I do not know the price difference (where you are buying) but I think for everyday usage you will not notice the difference.
Sent from my HTC Sensation Z710e using xda app-developers app