So i recently rooted and ive pretty much just been putting roms on my sdcard and checking each one out... is my sd card going to be able to handle a lot of roms on it? or should i just keep one on at a time so its not as full.... also are there things on the sd card that i can just delete and dont really need?
I doubt that you'll have to worry about filling up your SD card with roms. Most roms range from 50mb to 100mb so you can fit at least 10 in 1 GB. Your card holds a little less than 8 GB due to other various things that you download that install data and folders to the SD card. Unless you go crazy with holding a lot of music or videos on you card, then you should be fine. I'd be more concerned with the internal phone storage, as that being filled up would possibly slow down the phone a bit. As far as what folders you need or not, just open them up and double check what is inside. It's usually easy to tell if the folder contains something that might be useful. If nothing else, the phone will automatically install the folder again if it's important to a function it thinks is needed. Hope this helps...
i have most Eris ROMs posted in these forums (22 different flavors ). including multiple versions of some... all stored on my sdcard
my entire ROM folder is 3.34GB. i do, however, have a 16gb SDcard...
If I bought a faster SD card for my phone would it see a performance increase? I hear there are multiple classes of SD card so if I buy a higher class (better) would I be able to see the difference?
Hungry Man said:
If I bought a faster SD card for my phone would it see a performance increase? I hear there are multiple classes of SD card so if I buy a higher class (better) would I be able to see the difference?
Click to expand...
Click to collapse
Upgrading to a Class 6 sdcard would give a noticeable improvement if you use a2sd. Other than that it would be minimal for file transfers...
here are the classes:
* Class 2: 16 Mbit/s (2 MB/s)
* Class 4: 32 Mbit/s (4 MB/s)
* Class 6: 48 Mbit/s (6 MB/s)
* Class 10: 80 Mbit/s (10 MB/s)
the cards aren't cheap... and for the money, i don't think the return is that great. i found a CHEAP deal on a class 4 card, but don't do anything but apps2sd. no "real" performance increase. a class 6 card is of course faster, but i honestly doubt you'll notice any "major" performance increase, regardless of configuration (i.e., swap on sd, apps on sd, etc). there are varying opinions on this topic, but that's my .02. i'd say the money would be better spent elsewhere... maybe even donating to a dev lol
however, moving files to/from sd to pc, etc, will be faster... may cut down on flashing ROMs by a few seconds
I see. Thanks for the info. Do you know what the Eris has? I think a Class 10 can be around 60 dollars lol I'd much rather donate to a dev.
Hungry Man said:
I see. Thanks for the info. Do you know what the Eris has? I think a Class 10 can be around 60 dollars lol I'd much rather donate to a dev.
Click to expand...
Click to collapse
8GB Class 2
Oh I see. So they're pretty low.
Related
I'm familiar with the difference between the class 4 (4MB/s transfer speed) and the class 6 (6MB/s transfer speed). But is there any value in using a class 6 card on the XV6800 (regardless of size)?
I ask because I have a 4GB class 6 A-Data microSDHC card in my XV6800 right now and there is no problem at all with it. However, I am considering purchasing an 8GB class 4 Sandisk microSDHC card. So it got me thinking, even thought the A-Data card is capable of a faster transfer speed, that doesn't mean the XV6800 is ever actually using that extra speed. So would I see any slowdown if I moved to a "slower" spec'd microsdhc card?
I looked around for transfer speeds on the XV6800's microSD card slot and didn't come across anything.
Anyway have any data on this? Thanks in advance.
Depends some on what you are using it for but I doubt you will notice much of a difference. When transferring using a card and a card reader from your computer you may notice a difference but otherwise the interface in the phone itself doesn't seem to be all that fast anyway.
Don't get me wrong, I appreciate the comment, but that's why I'm asking if anyone has any actual data. The device either reads and writes to the microsd card slot above 4MB/s or it does not. I have not found a way to benchmark it so I'm looking for some actual detail. But thank you.
So I found an application that is supposed to measure the transfer speeds of the card slot on a Windows Mobile device. It's from Audacity Audio. The link on Softpedia is here.
I'm familiar with the application because I used the Palm OS version on my old Treo 700P. The problem is that he results always seem inconsistent and confusing.
In any event, I ran the test on two different microSD cards. The first is an empty 1GB Sandisk microSD card with. These cards don't have a "class" rating. The second is a 4GB AData Class 6 microSDHC card. I still had 2.5GB of the 4GB empty.
1GB
Wrt32bit/Wrt8KB/Read8KB
1105/330572/7943757
1105/335208/7710117
1123/366634/7710117
1030/311705/7489828
1070/306242/7489828
Avg
1086/330072/7668729
4GB
1462/109317/6393756
527/111408/6241523
1462/119482/4161015
517/85724/6241523
1581/126334/6241523
Avg
1109/110453/5855868
Honestly, the scores don't seem to make much sense. The read speeds all indicate north of 4MB/s and most of the time above 6MB/s. That's good. But the write speeds seem pointless. 330KB/s (.3MB/s) for the 1GB and 110KB/s (.1MB/s) for the 4GB ?!?!?! That doesn't seem right.
Anyway, any ideas would be welcome.
Write speeds are typically going to be a great deal slower for flash memory. And larger cards being even slower for writing makes a twisted sort of sense. All flash cards have "load-leveling" algorithms built into them to spread the writes across the flash disk in order to reuse locations as little as possible (flash memory cells have a limited lifetime). So the bigger the card, the more memory the load leveler has to manage. Of course, I could have it completely wrong....
Looking for people who have benchmarked their sd cards.
I have a fairly old 32gb generic sd card, it doesn't even have a speed rating on it.
I want to use bootmanager but I'm not sure this old card is fast enough to boot off of. I'm testing with SD tools on my tbolt
I get about 6 mb/s write speed
I get about 7-9 mb/s read speed in SD tools,
I know class 10 cards can vary wildly in performance and quailty
I am wondering if anyone has recommendations for the best quality card
with the highest read/write speeds, I want to get a new card but I don't want to pay a lot of money for a card that is only marginally better than mine.
i just downloaded that program to help you out,
got
7.0 read speed (peak was 8.6)
17.6 write speed
I am a long time user for boot manager and havent had any lag issues with this sd card
sd card is
32 gb
sandisk
class 4
came with my tbolt
hey all, i was just wondering if anyone knows the differences between the tests that crystaldiskmark does to test the speed of a storage device.
there are 4 different tests: sequential, 512k, 4k, and 4kQD32. read and write tests for each type of test.
thanks!
EDIT: heres a screenshot of my results:
I can't tell you about all of them, but sequential writes are what your card class is all about. A class X card is supposed to write a minimum of X MB/s. Your class 6 is writing well above its rating, congrats.
The other I can mention is 4kQD32 writes -- according to the Nook Color folks, it's very helpful for performance of SD installs of Android, so if we ever get an sd install here, hold on to that card. Higher class cards, 6 and 10, often do horrible in that 4k writes category. Class 2 and 4 Sandisks seem to have the best track record, but your transcend isn't half bad, and my best 4k writer is a no name card that outperforms my other 2 sandisks and a samsung. Source.
fortunz said:
I can't tell you about all of them, but sequential writes are what your card class is all about. A class X card is supposed to write a minimum of X MB/s. Your class 6 is writing well above its rating, congrats.
The other I can mention is 4kQD32 writes -- according to the Nook Color folks, it's very helpful for performance of SD installs of Android, so if we ever get an sd install here, hold on to that card. Higher class cards, 6 and 10, often do horrible in that 4k writes category. Class 2 and 4 Sandisks seem to have the best track record, but your transcend isn't half bad, and my best 4k writer is a no name card that outperforms my other 2 sandisks and a samsung. Source.
Click to expand...
Click to collapse
All right thanks. Its weird though I was just trying to copy a huge amount of files to my sd card (about 6.5 gb) and it was writing at like 3 mb's per second. Does the size of the transfer affect the write speed since this test was only using a 50 mb file?
Sent from my Nook Tablet using XDA PREMIUM
Copying lots of little files, in my experience, goes slower than copying a single large file. When I copy a video onto my card, I get close to the max speed. When I copy directories full of files, anything goes.
fortunz said:
Copying lots of little files, in my experience, goes slower than copying a single large file. When I copy a video onto my card, I get close to the max speed. When I copy directories full of files, anything goes.
Click to expand...
Click to collapse
Ok well I guess this sd card isn't all too bad then... really wanting to get a 32 gb card but trying to wait until I can get a better deal for it... you think a sandisk class 4 32 gb is good enough for games and videos?? I haven't seen any class 6 32 gb cards anywhere... not even sure if they exist...
Sent from my Nook Tablet using XDA PREMIUM
ShinnAsuka said:
you think a sandisk class 4 32 gb is good enough for games and videos??
Click to expand...
Click to collapse
I have a SanDisk Class 4 32 gb card for my Nook Tablet and it seems to work fine for games like GTA3, Angry Birds, etc. as well as .avi movies.
I tend to agree with Nookie. Depending on its actual performance (sandisks often outperform their minimum write rating, but not always), it might be frustrating to copy the files over, but viewing videos and playing games will work just fine even on a class 2. Fast sequential read speeds are easy to come by, and frankly they don't have to be all that fast to view even HD video. Your games are going to load into ram and play from there and perform just fine.
Hi guys
I'm looking to buy a Micro sd card, samsung 32GB, class 10
So my questions are:
1- If someone already using sd card just like this one, tell me is it working fine with your android device?
2- Do you think that patriot or some other manufacturer cards are better then samsung?
3- Does your phone in some cases really feals faster with an sd card with bigger class number ( does reading speed of your card effect phone's speed? )
4- I heard that class 6 ( 6 MBps ) is more than enough for android devices, and also that some class 10 cards slow down a device, is it true?
5- Will i ever have enough memory on my phone
I know that there are the same threads on forum somewhere, but i need answers quickly and thats why im opening this one..
Marchello1 said:
Hi guys
I'm looking to buy a Micro sd card, samsung 32GB, class 10
So my questions are:
1- If someone already using sd card just like this one, tell me is it working fine with your android device?
2- Do you think that patriot or some other manufacturer cards are better then samsung?
3- Does your phone in some cases really feals faster with an sd card with bigger class number ( does reading speed of your card effect phone's speed? )
4- I heard that class 6 ( 6 MBps ) is more than enough for android devices, and also that some class 10 cards slow down a device, is it true?
5- Will i ever have enough memory on my phone
I know that there are the same threads on forum somewhere, but i need answers quickly and thats why im opening this one..
Click to expand...
Click to collapse
1. It works fine.
2. It just user preference. Their both great.
3. Reading and writing to the SD card will be faster. It won't affect phone speed unless your device is using certain mods such as swaps, int.ext. sd swaps, etc. or you have apps on your SD card.
4. While class 6 may be quite fast for a device, there is no way a class 10 could be slower.
5. That's up to you .
tnx Theonew
if i understood it well, an app called swapper 2 can allow device to use some memory from partitioned sd card like a ram memory and provide it a slightly better multitasking, and speed.. ?
And i have read that it can also affect an sd card's life..
So, is it worth it?
Marchello1 said:
tnx Theonew
if i understood it well, an app called swapper 2 can allow device to use some memory from partitioned sd card like a ram memory and provide it a slightly better multitasking, and speed.. ?
And i have read that it can also affect an sd card's life..
So, is it worth it?
Click to expand...
Click to collapse
Yes, swapping can degrade the life of the SD card but it is worth it if your device is a low-end one (and slow). It will assist in stuff like gaming, etc.
No, I really don't think its worth it. It really affects the cards life and does not really add much ram, even for slow phones...
Sent from my GT-I8150 using xda app-developers app
krismerful said:
No, I really don't think its worth it. It really affects the cards life and does not really add much ram, even for slow phones...
Sent from my GT-I8150 using xda app-developers app
Click to expand...
Click to collapse
An additional 256mb is quite a lot compared to 192mb (total).
Quick benchmark of Samsung SD card class 10 in the ASUS Transformer TF101.
Code:
[email protected]:/home/kuisma# hdparm -t /dev/block/mmcblk1p2
/dev/block/mmcblk1p2:
Timing buffered disk reads: 60 MB in 3.09 seconds = 19.43 MB/sec
Reference, the internal nand flash (/data partition):
Code:
[email protected]:/home/kuisma# hdparm -t /dev/block/mmcblk0p7
/dev/block/mmcblk0p7:
Timing buffered disk reads: 52 MB in 3.10 seconds = 16.79 MB/sec
If comparing read vs write, large blocks vs small, sequential vs random etc, the SD Cards wins a few times, the internal flash a few. It's more or less a draw. I would say this SD card got "good enough" performance, although far from SSD performance.
good enough for smartphone
are you talking about solid state disk?
Sent From Xperia Arc Using Xda Premium!
Marchello1 said:
are you talking about solid state disk?
Click to expand...
Click to collapse
"SSD" was referring to "solid state disk", yes.
i found one for a 40€, micro sd, 32 gb class 10, its a good price here, im buying it next week
Sent From Xperia Arc Using Xda Premium!
Hi,
What I'm trying to find out is would using just an in-built memory on an Android phone be generally faster than SD usage? I'm particularly interested in using an Android phone as a sole media device. With a 32GB SD I'm generally not happy with speeds etc. Would getting a 32GB device with that memory on the device improve data transfer with the computer and accessing the data on the phone?
Thanks for any info. that helps me understand! :good:
SharpnShiny said:
Hi,
What I'm trying to find out is would using just an in-built memory on an Android phone be generally faster than SD usage? I'm particularly interested in using an Android phone as a sole media device. With a 32GB SD I'm generally not happy with speeds etc. Would getting a 32GB device with that memory on the device improve data transfer with the computer and accessing the data on the phone?
Thanks for any info. that helps me understand! :good:
Click to expand...
Click to collapse
In the general case, a Class 10 SDcard got about the same speed as the internal (mtd or mmc) disk.
kuisma said:
In the general case, a Class 10 SDcard got about the same speed as the internal (mtd or mmc) disk.
Click to expand...
Click to collapse
This. Not all SD Cards are the same. Make sure yours is a class 10 card and not one of the slower versions.
I did start to have a look at that recently. I'm using a class 4. I seen you can get a class 10 very cheap now, compared to a few years ago. I purchased the 32GB SD as a (minor purchase) test to see how well it works. I think it has potential, but in transfer speeds, my iPod still kicks ass. It can transfer a song per second, but at the moment, my Android phone transfers 1 song every 4 seconds.
If it would make a significant performance boost in this area, I'll definitely try that class 10!
Something like this?
http://www.ebay.ie/itm/221087900172?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
http://www.ebay.ie/itm/320956174043?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
In-built memory is the fastest but these days Class 10 SD cards are very near the W&R speed of in-built memory.
So try buying a quality Class 10 SD card and im sure you will have better experience with it.
Hreidmar said:
In-built memory is the fastest [...]
Click to expand...
Click to collapse
Not necessary: http://forum.xda-developers.com/showpost.php?p=29289018&postcount=7