Develop Bugs

Do i NEED a Class 6 Micro SDHC Card

Hello all,
Ive got a spare 16GB Micro SDHC card which i have swapped for the stock 2GB version that came with the Desire, but it is only a Class 2.
Having read that its best to use Class 6, should i shell out £50 for a new one, or will i not notice a difference in class ?

Dunno - I'm using a class 2 16gb card myself and I don't notice much slowdown if at all. I'm surprised these things haven't come down in price after two years... key thing is do you notice any slowdown with apps that access the SD card? like I say, I haven't thus far...
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk

i read somwhere that class 4 is enough coz the phones do not support hihger speeds. class 6 will help you if you will take card to the card reader straight to the computer... it think

hot-fuzz said:
... Having read that its best to use Class 6 ...
Click to expand...
Click to collapse
Where have you read that, please?

tomeeq12 said:
i read somwhere that class 4 is enough coz the phones do not support hihger speeds. class 6 will help you if you will take card to the card reader straight to the computer... it think
Click to expand...
Click to collapse
Thats what i ......... think. Im sure it only matters if its connected to the PC, and in that case i dont care.
I read it on another forum that i wont link too
Class 6 are almost double the price of Class 2.

You don't NEED to get one, I did use a Class 2 card for a few days and didn't have any problems.
Personally I am using a Class 6 now, as I regularly transfer a lot of big media files onto the card, so the extra speed is worth it for me.
If you don't fancy forking out though, you don't have to.

I totally agree, My desire came with a 4gb sandisk class memory card which I initially assumed was class 4 until I took the card out yesterday...connecting the desire to my pc and switching to usb drive mode, i am able to transfer my movies etc to the memory at +/- 8Meg per sec which is more than adequate enough for me...I was about to get a 16gb one but was thinking of getting the class 6 one until i discovered the one I currently have is class 2, so I just made up my mind and went for a class 2 16gb, saved me money....

They only refer to the write speed of the card, i came from a 8gb class 6 and now have a 16gb class 2 and notice no difference, only difference is the write speed from pc to card.
Even though i got a class 2 i still see 4-6mb/s so happy enough with that.

I have a class 10 16Gb card in phone. Read and write speeds seem to be limited to around 8Mb per second (copying uncompressed music). Using an adapter, the computer is able to copy at 14Mb+ using the same card.

They just seem a big outlay for nothing to me, lets face it the only big write time is when you transfer everything across from your previous card once the stuff is on there the write times really won't be much of a problem.

The main reason you will find people suggesting class 6 and above SD cards is due to "Apps to SD". For the Newbies "Apps to SD" or A2SD is a modification that has been done on most android phones (though not the desire at time of writing) which allows the Apps you download to be stored on the SD card rather than the phones limited internal memory. I am not sure if it makes a huge difference to the faster processor phones, but in the G1 days it was noticeable. For just moving music and pictures about it isn't really important to have a faster card and we may have to wait a while for A2SD anyway. I will pop over to the N1 forum and see if they can shed some light on this.

Anyone using a microSD 16GB Class 4, if so are they any good? I'm looking at buying one for the Desire. Also where's the best place to get a deal on one of these card?

32gb class2 or 16gb class6+ SDCARD

I'm trying to decide if i should go for space, or speed.
For those of you that bought 32gb cards, are they class2? and if so do apps and such run off it fine, playing movies?
Class 6 is much more fast, and a class6 16gb card is still half the price as a class 2 32gb card.
Just looking for guidance here, do we need more then class2 for our phones.
Plan on putting movies and apps and stuff on the card.

I have a 16GB class 2 card in my Cappy, and I can play 720p video off it without a single stutter, and I never did install the lagfix, so class 2 SHOULD be fast enough, depending on what you want to do with it.
But right now, the cost of the 32GB cards is, I think, prohibitive. It costs > 3x what I can get a 16GB card for, and thus far, I have not filled my card yet.

I would go with a faster speed for the bigger size card, class 2 would be too slow if you are read/write onto it constantly; For the best bang of your buck, the Polaroid 16GB microSD (made in Japan by PNY) from Frys is going for under $20 (after rebate); Even though it is labeled as a Class 2 card, but under most SD benchmark app, it is detected as a Class 4 card (4.5 MB/s Write/15 MB/s Read under the 300MB file R/W test in SD Card Speed Test)

I would rather take a 2GB class 6 over a 32gb class 2. Class 2 is so unbelievably slow its unbearable. I use my phone as a usb drive very often. In my previous phone I had an 8gb class 2. It was so slow I thought the card was broken. So I RMAed it and the new one was the same. I realized that it just takes like 8min/gb to transfer to it. (and no its not faster in this phone)
Class 4 is standard, anything less is a waste of silicon and plastic.
Class 6 is about as fast as your average-quick USB thumb drive.
Yes class 2 is fast enough to run programs and play back video, but you'll spend a lifetime transferring those things.
Not worth it IMO. Get an 8gb class6 if cost is an issue. Also, don't go with any crappy random manufacturers. I find that a class 6 from 'craptasticMEM' is nowhere near the speeds it should be, and in fact usually slower than a clas 4 I have from kingston.

The class rating has nothing to do with playback speed, only write speed. Copying files is faster, but how often are you loading up your SD card from your computer?
I am using class 2 and it is recording video just fine. I am not sure why above poster claims "class 4 is standard" - that would imply that class 2 is sub-standard. It is not, it just has slower write speed.
Keep in mind that if you lay out the big bucks for a class 6 32GB card today, it will half the price in a few months.
Now in my HD Camcorder it requires Class 6 to record 1080P - our phones have no such requirement, so anything above class 2 will help in initial data transfer from PC - after that you may never, ever see any benefit.

alphadog00 said:
... I am not sure why above poster claims "class 4 is standard" - that would imply that class 2 is sub-standard. It is not, it just has slower write speed.
Click to expand...
Click to collapse
Yes, sorry you're correct. Class 4 is standard in my gauge of memory cards/usb drives. All the classes "should" perform fine. The higher classes are obviously faster (with significant brand to brand variation). I find that they are faster at everything though. Not just write, but read as well. A class 6 card is as smooth as the internal memory in the captivate. A class 2 card is abysmal at everything (in my experience). I say class 4 is standard because class 2 is really bad...

eatkabab said:
Yes, sorry you're correct. Class 4 is standard in my gauge of memory cards/usb drives. All the classes "should" perform fine. The higher classes are obviously faster (with significant brand to brand variation). I find that they are faster at everything though. Not just write, but read as well. A class 6 card is as smooth as the internal memory in the captivate. A class 2 card is abysmal at everything (in my experience). I say class 4 is standard because class 2 is really bad...
Click to expand...
Click to collapse
It could be my blindness - not physically, but the ignorance of not having a class 4 or 6 to compare to my class 2. My class 2 works fine for me, but if the class 6 stuff gets cheap I will head on over to it.

alphadog00 said:
It could be my blindness - not physically, but the ignorance of not having a class 4 or 6 to compare to my class 2. My class 2 works fine for me, but if the class 6 stuff gets cheap I will head on over to it.
Click to expand...
Click to collapse
My 32GB Class 2 reads/writes as smoothly as the internal card on the captivate as well.

locsplitter said:
My 32GB Class 2 reads/writes as smoothly as the internal card on the captivate as well.
Click to expand...
Click to collapse
lol no
internal is like class 10 i believe

locsplitter said:
My 32GB Class 2 reads/writes as smoothly as the internal card on the captivate as well.
Click to expand...
Click to collapse
its not healthy to lie

you guys are missing the fact that the class ratings are a MINIMUM rating. a lot of brands will perform MUCH faster than what they have printed on them. just saying something is class X is pretty much pointless. it's just a guideline that is being loosely followed. benchmark and move on

If your running apps off of your card than believe me there is noticable difference between a class 2 and a class 6, and yes dont go for a no name.
Sent from my SGH-T959 using XDA App

demize! said:
If your running apps off of your card than believe me there is noticable difference between a class 2 and a class 6, and yes dont go for a no name.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
I don't believe you. It 100% fully depends on the card. Some class 2's are faster than class 6's. Ratings are lies.... benchmark ftw!

True that. Ive found significant differences by brand. However, there is definitely a noticeable difference between a class 2 and a class 6 card.
What you get depends on personal requirements more than anything else. Faster or more storage?

[Q] How important is flash memory transfer speed?

I was just about to buy a 16GB MicroSD flash card for my Evo when I noticed it was only Class 2. I popped out my stock MicroSD 8GB SanDisk and noticed that it is Class 2 as well, and I've never experienced any issues with it as far as running apps from SD, backups, etc.
However, I've done a little curiosity shopping and have seen some Class 6 and Class 10 MicroSD options. Of course these are a bit more expensive. Would they be worth the premium? What exactly would a higher transfer speed allow me to do that I cannot do already?
It seems to me the most important features (and the features I love so much) on my Evo are the Wimax and the custom ROM flashing. I can't see it helping substantially in these categories, but I have no idea.

Higher class cards mean faster baseline read and write speeds, so anything that runs off of it will be faster like your gallery, nandroid backups, file transfer. You can get a 32GB class 10 card for $100 shipping included
NoCatharsis said:
I was just about to buy a 16GB MicroSD flash card for my Evo when I noticed it was only Class 2. I popped out my stock MicroSD 8GB SanDisk and noticed that it is Class 2 as well, and I've never experienced any issues with it as far as running apps from SD, backups, etc.
However, I've done a little curiosity shopping and have seen some Class 6 and Class 10 MicroSD options. Of course these are a bit more expensive. Would they be worth the premium? What exactly would a higher transfer speed allow me to do that I cannot do already?
It seems to me the most important features (and the features I love so much) on my Evo are the Wimax and the custom ROM flashing. I can't see it helping substantially in these categories, but I have no idea.
Click to expand...
Click to collapse

I've heard the evo can only only write at class 2 speeds anyway so Idk.. if this is true then it doesn't matter if you have a class 10 cuz it'll still write at class 2 speeds..

it isn't hardware limited, it will write as fast as the card can handle

[Q] New microSD

hello guys.
I have a memory card(Adata microSDhc 8gb class6) and I want to replace the old one(samsung microSDhc 8gb class2), because I think the new one is faster, am I right?.. and I want to know what steps need to follow to replace him or simply hand him the old with the new one??

The class 6 card should be faster, although bear in mind that the speed rating is a minimum so a quality class 2 card could be faster than a shoddy class 6 card. As for replacing it mount your SD card to your pc copy everything to the pc, install your new sd and transfer everything back, job done.

I understand, thanks. but I'd like to say your opinion if it's worth to make this change ?

for me no, samsung cards may not be the top of the line but they are good enough.
and the fact that it's only 8GB, getting a faster class cards will be worth it if you're getting those higher capacity cards 16gb / 32 gb.

ok thanks. remain with the old one ,and I will change when I'll buy a card of 16gb or 32gb. but are so expensive in our country :-<

galacticu said:
I understand, thanks. but I'd like to say your opinion if it's worth to make this change ?
Click to expand...
Click to collapse
Personally if you've got the card there I'd give it a go download SD-tools and benchmark both cards and keep the faster one, I find that faster cards do improve life sometimes with faster gallery load times and less likelihood of stuttering when recording HD video.

Actually i too had an 8 gb class 2 and i upgraded to 8 gb class 6. The problem with class 2 is that videos recorded at 720p start lagging when you play them with a class 2 card. I had this problem with the new sd card i got with my dhd. it was a class 2 and videos at 720p would lag like crazy. Got a new class 6 and the problem just disappeared.

3micro sd class 4 vs 10

Planning on getting either a 32gb or 64gb depending on the price.I planned on using app2sd mod to use the micro sd as my main storage instead of the 16gb internal storage. And the micro sd card has to be in FAT32 or EXTFAT format.
1.What the real big difference between class 4 and 10? Beside the price? Is class 10 speed much noticeable or just a minor improvement from class 4?
2.Since i plan on using this as my main storage. Will opening app/games, playing music, viewing video/picture and saving picture on a class 10 be a lot faster than class 4? Also how about coping the files from pc to sd card? Any difference?
3.What brand would you recommend? Is there a difference between a sandisk class 10 and lexar class 10 beside the price?
4.What format do micro sd card come in? If it not FAT32 or EXTFAT, can i change it to FAT32 or EXTFAT?

1. Speed. Class 10 has much faster r/w speeds.
2. Not sure how big a difference itll be. Read speeds should be good enough on either for apps. Its hd video and such that will require higher write speeds though.
3. Dont much care for sandisk oersonally. But I think theyre the only ones offering 64gb. Never tried lexar but Samsung memory has always been the best for me. Jus make sure you trust the seller.
4. FAT32, for most. ExFAT for 64gb. Yes you can reformat.
Sent from my SGH-T999 using xda premium