Hello All I have a very simple question but plays a very important role in performance.
I got a 2GB SD CARD FROM SAMSUNG.
I have another LOCAL SD CARD 4GB
My question is will the SPEED Remain same to transfer or access data from both these SD CARDS.
I mean to say is will the LOCAL SD CARD BE SLOWER(since its not samsung branded) IN ACCESSING AND RETRIEVING DATA which will eventually slow down my phone or something like that.
I hope you all understood my question..will elaborate if u want me to.
hoping for a good answer.
Thanks
so many views yet no replies
cumon guys a small opinion would make a big difference
I am not very knowledgeable about this, but the class of the SD card matters when comparing performance. Here is a link that might help:
http://www.sdcard.org/developers/tech/speed_class/
i have noticed that when i changed sd card from samsung original (came with phone) to new transcend 8gb sd card, phone is now booting for 5 minutes....
It being a samsung card doesn't make the card more "compatible" with a samsung phone. A card is defined by the card, not by the brand.
martin.jeremic said:
i have noticed that when i changed sd card from samsung original (came with phone) to new transcend 8gb sd card, phone is now booting for 5 minutes....
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yeah so it means that performance has degraded right.
Also i think booting is not much worry as its done from ROM
so apart from booting what else is buggy or degrading performance,comparing both 2 GB and 8 GB
its on a card to card basis, if it is slower for him it doesnt mean it will be slower for you.
You should use a Class 6 SD card. Slower cards are not adequate.
Sent from my GT-I5801 using XDA App
You can use a class 6 SD card, however, i do not think the phone is capable of handling such high speed cards, and thus the read/write speed of the phone will limit the speed.
Conclusively i don't think there will be an increase in performance!
Related
Does it make a difference in terms of Phone performance (Note: Not asking about connecting to a PC for data transfer) for having a External SD card if compare to having Class 5 to better class?
kelvin1704 said:
Does it make a difference in terms of Phone performance (Note: Not asking about connecting to a PC for data transfer) for having a External SD card if compare to having Class 5 to better class?
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I can't answer for sure but if the sotware sd card speed tester is correct mine is very quick (8/11) and i didn't get a very high score at quadrant benchmark with the minocan fix
Now this benchmark is hard to analyse
It would, theoretically, make a difference if you are using a data on SD mod like minocan's fix. Even then I haven't seen a huge difference between people using cheap class 2 cards and people using class 6 cards. Hell, some class 2 cards are as fast as class 6 cards already. You should test the card you have before you buy a new one.
If you're not doing any mods that put the data folder on the SD card, then for the most part no, your SD card is only accessed to store things like pictures or movies, and even only then if you choose to use the external card.
Also, MicroSD cards come in Class 2, Class 4, and Class 6, and Class 10 speeds. Each number corresponding to their minimum write speed.
if i got the answer correct, you guys are saying its negligible, right?
And this applies towards Samsuing Galaxy S which install the application on Internal SD card... right?
I got a 32Gb MicroSDHC class-10 memorette card.
I verified the speed with a card reader + h2testw that write speed is : 14.7MByte/sec
read speed: 17.5MByte/sec
But when I used the class10 card in tmobile HD2, I am shocked.
When I copy a 720MB movie the write speed is about 4MByte/sec.
h2testw program when used on hd2 connected to PC, showed write speed as 4.8 MByte/sec only.
It needs to be noted the same card when tested with h2testw and a card reader gave 14MByte/sec but gives less than 4.5MB/sec on HD2.
How to fix this problem of HD2 microsd card speed!
Looks like HD2 usb controller has some problem.
the card is indeed class-10.
Please let me know a solution to this problem on HD2.
downbc1 said:
I got a 32Gb MicroSDHC class-10 memorette card.
I verified the speed with a card reader + h2testw that write speed is : 14.7MByte/sec
read speed: 17.5MByte/sec
But when I used the class10 card in tmobile HD2, I am shocked.
When I copy a 720MB movie the write speed is about 4MByte/sec.
h2testw program when used on hd2 connected to PC, showed write speed as 4.8 MByte/sec only.
It needs to be noted the same card when tested with h2testw and a card reader gave 14MByte/sec but gives less than 4.5MB/sec on HD2.
How to fix this problem of HD2 microsd card speed!
Looks like HD2 usb controller has some problem.
the card is indeed class-10.
Please let me know a solution to this problem on HD2.
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The HD2 doesn't read or write to sd cards at that high of speed... that's why it's pointless using class 6 or 10 cards in a HD2. I think most phones are like that. Class 6 and 10 cards are mainly used for digital cameras, where having high sequential write speeds matters.
zarathustrax said:
The HD2 doesn't read or write to sd cards at that high of speed... that's why it's pointless using class 6 or 10 cards in a HD2. I think most phones are like that. Class 6 and 10 cards are mainly used for digital cameras, where having high sequential write speeds matters.
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I have earlier used a nokia 5800 xpressmusic phone with a class 6 16GB card.
The data transfer speeds were higher than HD2.
Generalizing from a single instance (HD2 scenario) may not be correct.
I'm going to go with that the HD2 does not transfer faster than 5.3 MB/sec between the PC and the phone regardless of what the internal transfer rate between the phone and card is.
Using a class 6 card myself, i have noticed that the phone is much more responsive than it was with the class 2 card in there and movies play without stuttering from the class 6 card and applications launch quicker.
my nokia n81 8gb did 8MB/sec from internal 8GB and so did my KM900. The KM900 did 6.2MB from the same classs 6 card
I was under the impression the HD2 maxed at 16 gig. Maybe that's the problem?
Like zarathustrax said, the HD2 isn't capable of read/write any higher than a class 4 card. I think somewhere on the EVO forum there's a fix to unlock the read/write capability for a higher speed but I dunno if anyone here has tried the fix, or if it even works for the HD2 at all.
anhyeuemmaimai said:
I'm going to go with that the HD2 does not transfer faster than 5.3 MB/sec between the PC and the phone regardless of what the internal transfer rate between the phone and card is.
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This is not true. I've copied large files at over 10MB/s directly to the phone. I can't vouch for every hd2 though as it's quite possible they have different hardware. Also the speed drops dramatically if you're copying many smaller files.
I am thinking to buy memorette 32 gb microsd class 10 for my HD2.
As far as I have understood:
1) No matther what I cannot use it fully Class 10 speed when connected to HD2
2) When I connect it to my PC with card reader I can fully use class 10 speed.
I have sandial 8 gb class 2. When I connect it to my pc with card reader and transfering large amount of data (150+ MB), it cease to operate. I have to reconnect it. Then I shuld transfer in less amount of data or reduce copy speed (such as UltraCopy) . I think that is a safety issue for preventing disk from get burned. My question is, will I possibly have some issues with memorette or some other class 10 cards?
Also would it not better using class 10 card in HD2 for using on SD installed Operating System instead of class 6 or 4?
I would appriciate if someone return about memorette. I have never heard about that trademark. I am planning to bid on ebay today.
Sent from my HTC HD2 using XDA App
lude219 said:
Like zarathustrax said, the HD2 isn't capable of read/write any higher than a class 4 card. I think somewhere on the EVO forum there's a fix to unlock the read/write capability for a higher speed but I dunno if anyone here has tried the fix, or if it even works for the HD2 at all.
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fix to unlock the read/write capability for a higher speed ????? Really ... i have buy a micro sd 16GB class 10 ........
morfil said:
I am thinking to buy memorette 32 gb microsd class 10 for my HD2.
As far as I have understood:
1) No matther what I cannot use it fully Class 10 speed when connected to HD2
2) When I connect it to my PC with card reader I can fully use class 10 speed.
I have sandial 8 gb class 2. When I connect it to my pc with card reader and transfering large amount of data (150+ MB), it cease to operate. I have to reconnect it. Then I shuld transfer in less amount of data or reduce copy speed (such as UltraCopy) . I think that is a safety issue for preventing disk from get burned. My question is, will I possibly have some issues with memorette or some other class 10 cards?
Also would it not better using class 10 card in HD2 for using on SD installed Operating System instead of class 6 or 4?
I would appriciate if someone return about memorette. I have never heard about that trademark. I am planning to bid on ebay today.
Sent from my HTC HD2 using XDA App
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A good quality class 2 or 4 sd card is usually better for running an operating system off of, as lower class cards tend to have faster random access speed and better random read/write speeds. Class 6 and 10 sd cards are designed to have a higher sequential write speed, but to achieve these higher speeds, the card initializes the part of the card that's about to be used. The initialization takes some extra time to get started, but boosts the sequential write/read speed so it's great for digital cameras or writing files sequentially.
But when it comes to using the card to run an OS off of, like android or wp7, or using the card to run apps off of, you are going to be reading and writing many small bits of data from different parts of the card. When it comes to this, you need a card that has a good random access speed and random read/write speeds. A high class card that is tweaked to have high sequential read/write speeds ends up being slower because it keeps initializing each part of the card before accessing it, while the lower class 2 or 4 card that doesn't do the initialization is a lot quicker accessing many small parts of the card because it doesn't have that extra step... but they don't get the speed boosts with sequential read/write.
Many people just assume that a higher class card is always going to be better, but this isn't true at all. It all depends on what you are using the card for. Higher class 6 or 10 cards are perfect for digital cameras, recording video, or transferring large files, etc... if you are going to be doing sequential reading or writing, higher class is better.
But for running apps off of, or running an OS off of, or using it as internal memory for an OS like wp7, or anything that will be accessing many parts of the card quickly or reading many small bits of data, etc., you want a card with a good random access speed and random read/write speeds, and that is something that is not rated on cards... but generally lower class cards are better than higher class cards... especially if you get a good quality brand, like sandisk. Sandisk class 2 and 4 are very good cards for random access speeds.
I hope some of you find this info useful and stop assuming a higher class card means better for all situations.
buzz killington said:
This is not true. I've copied large files at over 10MB/s directly to the phone. I can't vouch for every hd2 though as it's quite possible they have different hardware. Also the speed drops dramatically if you're copying many smaller files.
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You must be special then. In my tests I had no difference in a class 2 and class 6.
morfil said:
I am thinking to buy memorette 32 gb microsd class 10 for my HD2.
As far as I have understood:
1) No matther what I cannot use it fully Class 10 speed when connected to HD2
2) When I connect it to my PC with card reader I can fully use class 10 speed.
I have sandial 8 gb class 2. When I connect it to my pc with card reader and transfering large amount of data (150+ MB), it cease to operate. I have to reconnect it. Then I shuld transfer in less amount of data or reduce copy speed (such as UltraCopy) . I think that is a safety issue for preventing disk from get burned. My question is, will I possibly have some issues with memorette or some other class 10 cards?
Also would it not better using class 10 card in HD2 for using on SD installed Operating System instead of class 6 or 4?
I would appriciate if someone return about memorette. I have never heard about that trademark. I am planning to bid on ebay today.
Sent from my HTC HD2 using XDA App
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Click to collapse
I am using memorette class 10 32GB microsd currently.
Its affordable and is fully working. I have tested to full capacity read/write using h2testw as I wrote in an earlier post.
Just check the seller's feedback and the description though.
I use TEAM micro sd class 10 on my hero,but after a month my sd card write speed is only 2MB/s.
At the first time,it reach 11MB/s when i tested it with h2testw and sd speed test on my handset.
I only use 640MB for app2sd (ext2) without swap cache.
Could someone explain to me what was happen to my sd card?
Sorry for my bad English
Does any one have the problem?
When I forgot to insert the SD card when flashing WP7, the market downloads were blazing fast. Unfortunately I had to reset the phone with the card in place and after that, now the downloads are crawling.
Do you know why? Any help would be greatly appreciated.
Thanks.
maybe it's because MicroSD memory is usually slower than Nand memroy.
Idk if by upgrading to a higher sdcard class will improve performance, but if u have another memory card around (with has different Class or Brand) why don't you test it with the market apps downloads and come back and tell us if u noticed any changes in performance?
no no no no,
righty, first things first, try reflashing with the SD in, it shouldnt make any difference over a hard reset but its worth the shot.
the reason its slow assuming the above doesnt work is because your SD card isnt compatible, there is some evidance that formatting the SD card in a digital camera has some effect but i think the best performance comes from cards that work from the outset.
note there isnt any list of compatibe cards, DO NOT assume that any card "recomended" by anyone will work.
statistically you have a better chance with a class 2 or 4 card, but that doesnt mean a class 6 or 10 wont work, no brand of card is above this issue, sandisk suffer just as much as the next brand.
in short, its luck if you can get one that works or not, theres nothing else too other than try sticking to class 2 or 4.
oh if your running a class 2 card fine, dont assume a class 4 will be quicker, it might not, it just depends on teh card...and a spot of luck1
Thanks for the reply!
I have the stock sandisk class 2 card that came with the phone. I think it might be similar to when Android was on SD card and the market downloads were really slow too. But after RAM builds and NAND builds came along, the dolwnloads happen blazingly fast.
Anyway, thanks for replying
I ordered a ADATA 8GB MicroSDHC Class 10 memory card for my HTC HD2. I'd like to know if it will work well on my phone since the transfer is so high. I'm asking this because I want to use a SD version on android.
Thank you in advance for the answer!
When i asked my friend who was the Sales Director of Sandisk Australiasia, he said that the read and write speeds of the supplied Class 2 was more than enough, since these Class 2 is the minimum guaranteed write speeds for that card.
Personally, i'd like to use a faster card, but i think that the key here is the quality of the card over the speed. Im using android over SD and dont mind the negligible lag.
Perhaps someone who has tried a faster card can comment on Droid on SD, as NAND speed offers the fastest, but without the flexibility.
GLO said:
When i asked my friend who was the Sales Director of Sandisk Australiasia, he said that the read and write speeds of the supplied Class 2 was more than enough, since these Class 2 is the minimum guaranteed write speeds for that card.
Personally, i'd like to use a faster card, but i think that the key here is the quality of the card over the speed. Im using android over SD and dont mind the negligible lag.
Perhaps someone who has tried a faster card can comment on Droid on SD, as NAND speed offers the fastest, but without the flexibility.
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I found a really old thread where people were saying it is fully supported. Thanks for the answer! I want to use android on the sd too because I don't really want to risk messing up my phone with a rom install.
It's been around for ages that the speed of the SD doesn't matter for SD android.
what matters is the access time, here's a thread for benchmarks:
http://forum.xda-developers.com/showthread.php?t=1048649
the smaller the access time the better. in other words, you might get a class 10 card with long access time, and a class 2 with short access time, the class 2 will perform better overall (faster system loading, etc). but when you copy large files the class 10 will be faster.
meaning: for running android on SD you need a faster access time, and each millisecond counts.
[edit] forgot to say that random read and write speeds play a good role as well.
I use PNY 32GB class 10 MicroSD card in my HD2. No problem at all. Phone is only one week old and haven't installed any cooked ROM yet so 32GB card on stock ROM.
yes, a class 10 would work perfect with stock or custom windows ROMs. and with NAND android to some point.
I'm talking about SD android which, in case you haven't read the previous posts, he wants to run a build on his SD. and that's where the class 10 cards start to look bad. they mostly have slower random read/write speeds. In usage terms that's: lags, lags, errors, and more lags.
Whats going on here? And SD card I have tried is to slow. OK I had class 6 etc so I understand that, but went out today and bought a Samsung EVO 48MB/S UHS-I Class 10 and guess what? Its still to slow
the write speed on that card will be really slow 10MB/s maybe, you need a U3 card if you want fast writes as well as reads.
TBH i have put bog standard class 10 cards in my kids second gen Moto Gs as adopted storage and they've not moaned about the phones going slow at all.
slugger09 said:
Whats going on here? And SD card I have tried is to slow. OK I had class 6 etc so I understand that, but went out today and bought a Samsung EVO 48MB/S UHS-I Class 10 and guess what? Its still to slow
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What do you mean with to slow? You mean its not suited to use as internal memory or just slow when browsing your sdcard files?
Marshmallow tells you if it is too slow or not when you use adopted storage, i have seen the same message for U3 cards though so i personally just ignore it and crack on.
Wrong article.
Problem might not be the card but the phone memory controller itself could be a bit slow
Sent from my XT1562 using XDA-Developers mobile app