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Hello, i am seeing a SD card to buy for my HTC TP, and by what i read here, they speak about class 5, class 4.... about classes...
And by what i saw on ebay, they speak it too, clan anybody explain for me what is it?
is it related with quality?
thanks
AFAIK there's only the following three classes: 2, 4 and 6.
They rate the read/write speed for that specific card.
"Class 2" means 2MBps minimum sustained write speed, and "Class 4" means 4MBps, and 6 for Class 6...
It's a different naming than "100x speed" but it classifies the cards speed in almost the same way... 'Almost' because the 100x speed indication mentions the top burst peaks, as opposed to the minimum sustained speeds...
Usually a Class 6 compares very well in terms of speed to a Sandisk Extreme IV (which is 133x speed)...
Also interesting to know: SDHC cards support FAT32, apart from more storagespace...
By the way and off the record: Google and Wikipedia seem vintage tools these days....took me more time to dig up from my own skull than looking it up...
Moaske said:
AFAIK there's only the following three classes: 2, 4 and 6.
They rate the read/write speed for that specific card.
"Class 2" means 2MBps minimum sustained write speed, and "Class 4" means 4MBps, and 6 for Class 6...
It's a different naming than "100x speed" but it classifies the cards speed in almost the same way... 'Almost' because the 100x speed indication mentions the top burst peaks, as opposed to the minimum sustained speeds...
Usually a Class 6 compares very well in terms of speed to a Sandisk Extreme IV (which is 133x speed)...
Also interesting to know: SDHC cards support FAT32, apart from more storagespace...
By the way and off the record: Google and Wikipedia seem vintage tools these days....took me more time to dig up from my own skull than looking it up...
Click to expand...
Click to collapse
so, the best is class 6, no?
'fastest' is class 6, but atm, i believe there is only class 2 16gb sdhc, which is what i've got since mid december last year.
wanwarlock said:
'fastest' is class 6, but atm, i believe there is only class 2 16gb sdhc, which is what i've got since mid december last year.
Click to expand...
Click to collapse
Class 4 16gb just came out http://www.symbian-guru.com/welcome...ssy-with-16gb-mobile-ultra-microsd-cards.html but its $119.99 My class 2 16gb from sandisk was $50.
not worth it yet... will wait a while to upgrade, but i think the speed would not be that much different
Inside your device, there's not much difference between different classes. Listening to music or watching videos doesn't really require all that much speed. But if you connect to your PC to transfer files a lot, then class 4 or 6 should be noticably faster.
Here is kingston 16GB for $38 http://www.buy.com/retail/product.asp?sku=210733297
off to hong kong next week
so hoping to get a cheap SDHC 16gb class 6 for my nikon D90
pkshr said:
Here is kingston 16GB for $38 http://www.buy.com/retail/product.asp?sku=210733297
Click to expand...
Click to collapse
shame they don't ship to new zealand...
Hey. Just curious how many of you have replaced the stock 16gb class 2 sdcard with class 4,6 or 10. Can you chime in with your inputs on performance between these classes. I know the theoretical transfer speeds, but I am curious how they actually perform in day to day use. Would jumping from a class 2 to class 6 be noticeable, or a class 6 to class 10?
Thanks
I am interested to.
Have just upgraded to an Ebay 16gig Class 6. Speed is faster than a Class 2 but not sure if it is a Class 4 or class 6.
Tempted to buy a 8gig Class 10 but struggling to find a reputable source of these.
In case you don't know Class x denotes the write speed. Class 2 has a 2meg/sec. Class 6 has a 6meg/sec write speed. Also gt a increase in read speed. All must be good for the HD unless the Interface is slower than the card??
dusty_nz said:
I am interested to.
Have just upgraded to an Ebay 16gig Class 6. Speed is faster than a Class 2 but not sure if it is a Class 4 or class 6.
Tempted to buy a 8gig Class 10 but struggling to find a reputable source of these.
In case you don't know Class x denotes the write speed. Class 2 has a 2meg/sec. Class 6 has a 6meg/sec write speed. Also gt a increase in read speed. All must be good for the HD unless the Interface is slower than the card??
Click to expand...
Click to collapse
From my reading and investigation, not many devices out there support such high speed, I'm thinking phone isn't one of the device that do. I would like to see someone do some testing and see if there is a difference on a HD2 between a class 6 vs class 10.
I didn't know they had a class 10, but I'm running a class 6 and I can tell the difference from the 16gb stock card. Loading Android is a lot faster too.
Sent from my HTC HD2 using XDA App
I have a class 10... Its a great diference.
I've got a couple of 16Gig class 2s and a 4Gig class 10. I can certainly tell a difference. I haven't done any empirical testing but gut says it's almost twice as quick. The difference comes when you multitask, getting a couple apps open, app loading, etc.
The problem with the 4Gig is the obvious lack of size. I'm thinking of buying a 32Gig class 4.
xicko said:
I have a class 10... Its a great diference.
Click to expand...
Click to collapse
between a class 6 and 10, is there still any noticeable improvements with the phone?
I want video evidence.
Lorddeff07 said:
I want video evidence.
Click to expand...
Click to collapse
Agree! A video might help us to decide if it is worth buying a class 10 card.
bangsters said:
between a class 6 and 10, is there still any noticeable improvements with the phone?
Click to expand...
Click to collapse
Looking at numbers alone, a class 6 is three times faster than a class 2 and a class 10 is five times faster than a class 2 so upgrading from a class 2 would appear to be a sure fire bet in both cases
In comparison a class 10 is only 1.6 times faster than a class 6.
So I think I will stick with my class 6 for now until class 12+ comes out.
So in conclusion do you guys think a faster SD card is necessory? because once xda team finish develop a perfect android rom i believe they are gonna make it a rom, in that case we would'nt need a faster SD card, But i really wonder if a faster SD card improves the performance? Can someone kindly provide a video for this ? Thanks ,,
class 10
I have a 16gb kingston class 10, compared to my Transcend 8gb class 6, not that much difference, compared to my Class 2 16gb that came with the phone? huge difference.
I'm now going out, to buy a 16GB classe 4 , i think is sufficient, given that in September Cttula will provide NAND, and the class will no longer important, and I'd rather have more space for my photos and videos, in vacation than a business card 8GBclasse10 faster.
Is the ETA for NAND September?
Nand speed vs. Class 10 card?
Anyone know what the read/write speed of the nand memory is as compared to the say the read/write speed of a class 10 card? I know it should be faster, but is it really that much faster?
bangsters said:
Hey. Just curious how many of you have replaced the stock 16gb class 2 sdcard with class 4,6 or 10. Can you chime in with your inputs on performance between these classes. I know the theoretical transfer speeds, but I am curious how they actually perform in day to day use. Would jumping from a class 2 to class 6 be noticeable, or a class 6 to class 10?
Thanks
Click to expand...
Click to collapse
i got class 10 kingston 16gb,
transfers between pc and phone is up tp 6 mb/s read and write, but on the phone it self i think it's faster.
previously i had class 2, 8gb sandisk and it was alot slower...
how do I know which class the SD card is?
i use a class 10 card in my digital slr and it makes quite a big difference. i'm sure it would create a significant performance boost with android
pack21 said:
I'm now going out, to buy a 16GB classe 4 , i think is sufficient, given that in September Cttula will provide NAND, and the class will no longer important, and I'd rather have more space for my photos and videos, in vacation than a business card 8GBclasse10 faster.
Click to expand...
Click to collapse
I dont find any microSD 16gb classe4 just, classe 2 and classe 10 - 100€
8gb classe4 i found for 20€
somebully said:
Is the ETA for NAND September?
Click to expand...
Click to collapse
Yes
reocej said:
Anyone know what the read/write speed of the nand memory is as compared to the say the read/write speed of a class 10 card? I know it should be faster, but is it really that much faster?
Click to expand...
Click to collapse
I think, it cant be comparable....starting by speed and smooth.
Dear xda-community,
a simple question: Which classes do you consider reasonable and which are overkill? Class 2 , 4 , 6 or 10?
wbr RikuXan
RikuXan said:
Dear xda-community,
a simple question: Which classes do you consider reasonable and which are overkill? Class 2 , 4 , 6 or 10?
wbr RikuXan
Click to expand...
Click to collapse
There are only very small differences in real-world performance in MicroSD cards no matter what class they are (unlike "normal" SD cards). Even a class 2 will give no problems with HD video recording. I've got a 16 GB Sandisk Class II. Cheap. No problems. What more could we want?
Agreed...
Phone's do not have great demands on memory cards, not even when writing at the highest video frame rate.
I have quite a few Micro SD's to choose and use.
Although I'm using a Sandisk 16GB Mobile Ultra which has a Class rating of 4, in real tests it performs much much faster but is quite really overkill for the Phone.
My recommendation, don't get a cheap Class 2 but go for a solid & reliable card.
It's worth paying that little extra on say a Sandisk Class 2 than a low rated unbranded Class 4/6.
RikuXan said:
Dear xda-community,
a simple question: Which classes do you consider reasonable and which are overkill? Class 2 , 4 , 6 or 10?
wbr RikuXan
Click to expand...
Click to collapse
i use class 6
class 10 is probably over kill
don't buy anything less than class 4
Okay, so i suppose i'll get a class 4 or 6 card, depending on the current prices.
Thanks for your help
wbr RikuXan
AllGamer said:
i use class 6
class 10 is probably over kill
don't buy anything less than class 4
Click to expand...
Click to collapse
As I have already mentioned it's not so much the class rating that matters but more the quality of the card.
The matrix of the Galaxy S's buffer run does not need anything great.
As such a reliable Class 2 would suffice.
As an example the Sandisk 32GB Class 2 easily provides acceptable video frame rates.
I recently ran this card and my present Sandisk 16GB Mobile Ultra card and visibly there was no difference in both saving camera video's or showing either a camera video or movie.
AllGamer said:
i use class 6
class 10 is probably over kill
don't buy anything less than class 4
Click to expand...
Click to collapse
Why? Please let me see some benchmarks that can convince me there is any idea in buying a class 4 instead of a class 2.
Check these benchmarks: http://forums.whirlpool.net.au/archive/1468705
So, just buy a cheap 16 GB Sandisk class 2 - anything else will be a complete waste of money.
MoWa22 said:
Why? Please let me see some benchmarks that can convince me there is any idea in buying a class 4 instead of a class 2.
Check these benchmarks: http://forums.whirlpool.net.au/archive/1468705
So, just buy a cheap 16 GB Sandisk class 2 - anything else will be a complete waste of money.
Click to expand...
Click to collapse
Again agreed.
The answer here is in the name Sandisk.
MoWa22 also fully understands and appreciates it's the brand what delivers and not so much the Class rate.
Sandisk cards often perform much faster than their same class counterparts.
Good link btw.
Class 4 or 6 is what you need class 2 is to slow.. you will notice the different between at class 2 and 4 in your phone go with 4 or 6 anything higher is over kill.
TriC_101 said:
Class 4 or 6 is what you need class 2 is to slow.. you will notice the different between at class 2 and 4 in your phone go with 4 or 6 anything higher is over kill.
Click to expand...
Click to collapse
Amazing... Doesn't people read the thread before posting? It's not that big yet...
MoWa22 said:
Amazing... Doesn't people read the thread before posting? It's not that big yet...
Click to expand...
Click to collapse
Yes..... I've had enough of this topic.
Catch you elsewhere.
Ok, a bit noobish question, but i have to ask :
Is sd card class important for speed, performace, and everything when running android on hd2 ?
I have SanDisc 8 gb SDHC class 2 ( ) sd card atm.. it bugs sometimes ( slow wake up, etc... slow dls.. ) but i can live with it..
But ive heard that sd card class is playing major role in performance and stability and other stuff..
So im asking you, should i buy class 6 ( hard to find in Belgrade, Serbia) or class 4... Is it going to be better than this with class 2 ?
Thanks in advance ...
Sorry for bothering
I use a class 4 32gb card and it works fine. The 16gb card class 2 my HD2 came with also worked fine.
I honestly do not see any difference between using my Class 2 16gb, my class 4 8gb or my class 6 8gb...when it comes to wake up times and system speed...the differences are mearly milliseconds
Where I do see is difference is when adding media to the SDcard (music and movies)...Files that take 3-4 minutes to load on my class 6 can often times take 15 minutes or longer to load onto my class 2.
...my primary card I use is my class 2 16gb and it does not bother me one bit.
agentaaron said:
I honestly do not see any difference between using my Class 2 16gb, my class 4 8gb or my class 6 8gb...when it comes to wake up times and system speed...the differences are mearly milliseconds
Where I do see is difference is when adding media to the SDcard (music and movies)...Files that take 3-4 minutes to load on my class 6 can often times take 15 minutes or longer to load onto my class 2.
...my primary card I use is my class 2 16gb and it does not bother me one bit.
Click to expand...
Click to collapse
theres not much difference,the only difference ive noticed between my class 4 8gb and class 6 8gb is boot up times are a bit more faster with the class 6,thats about it really
I have 4GB sandisk class 2 and everything works fast and great. with MDJ_FroYo_HD_v._4.3_MDJ_S7.5HD.
Pozdrav iz rajvosa.
I have microSD 16G class 2, in my xperia play.
what class i need 10 or 6 ?
I can't decide which one to buy ?
http://www.ebay.com/itm/16-GB-SD-Cl...emory_Cards&hash=item337194d858#ht_635wt_1396
http://www.ebay.com/itm/SanDisk-Mob...mory_Cards&hash=item3f0ffceb6f#ht_3660wt_1163
http://www.ebay.com/itm/New-16GB-Cl...mory_Cards&hash=item4cfe4c12e4#ht_2128wt_1163
Tbh you probably won't notice much difference to your current one
I have class 2 and I replacing to class 6 or 10.
The games will work smoother ?
Sent from my R800a using XDA App
I would not go anywhere above a class 6. Class 10 are great for transferring of long or big files but have are slower if you are just doing small files for like playing games like Gameloft games where the files are read from the sdcard. I would also stick to preferably Sandisk. I have a 32gb class 4 sandisk but when I do sdcard test it comes back as 5mbps rather then the 4mbps. So in a nutshell, either a 16gb class or a 32gb class, those are the two options I would go with.
I want 16gb.
What class i need for smoother gaming? 6 or 4?
Sent from my R800a using XDA App
should I buy this one ?
http://www.ebay.com/itm/NEW-Kingsto...e_Internal&hash=item231840b944#ht_2565wt_1396
That's a sdhc card so no ; I have a kingston class 4 16gb and most games work smoothly ( the ones that dont are either due to hardware limitations or aren't optimised correctly)
If you're gonna upgrade, get a 32GB, waste of money to just get another 16.
Don't get a Class 10 those are made for digital cameras and video cameras. The Class 4 Sandisk 32GB is the known reliable good card for this phone. Be careful of fakes.
what's wrong with class 6?
I think class 6 is not the most compatible but works better of with 4 l, get the 32GB only a few more dosh.
Sent from my R800i using XDA App