Does the speed of the card determine the transfer speed between the Phone and PC or within the Phone itself?
I'm wondering if it's worth the extra 20 to get a class 6 over a class 4.
This has been discussed before. The phone dictates the data transfer speed between the PC and SD card.
So what transfer speed does the Nexus One dictate?
Well..when tommyarmour and I were discussing this in his thread a month ago..neither of us got more than 2mb/s or so using class 4 and 6 cards. Plugging my class 6 directly into my computer's card reader got me over 6.5mb/s.
There are 2 distinct things about SD card performance:
1) If one roots and uses APP2SD method, where N1 stores apps on an EXT* partition on on the _card_ , instead of its own, built-in and very limited flash storage, then one would probably want faster performing card so that apps load faster. Especially if you have a game with tons of textures/scenery
2) Unrelated to #1, faster cards should allow faster transfer rates from one's computer to the N1's SD card - so when you have large music/image libs, those
could be moved on/off device quicker. But it appears that N1 limits such external transfer rates, making it moot to go for faster cards (unless you use APP2SD) . One can get faster rates by yanking the card out and using an external, proper, reader - so that might help if one needs to move say 10GB of music onto the card.
Bottom line: you can spring for 16GB Class 6 Card (Adata's are good, about U$60 on Amazon), save few bux and get slower card or wait another month for 32GB cards to appear in stores and make your decision _then_
rashid11 said:
There are 2 distinct things about SD card performance:
1) If one roots and uses APP2SD method, where N1 stores apps on an EXT* partition on on the _card_ , instead of its own, built-in and very limited flash storage, then one would probably want faster performing card so that apps load faster. Especially if you have a game with tons of textures/scenery
2) Unrelated to #1, faster cards should allow faster transfer rates from one's computer to the N1's SD card - so when you have large music/image libs, those
could be moved on/off device quicker. But it appears that N1 limits such external transfer rates, making it moot to go for faster cards (unless you use APP2SD) . One can get faster rates by yanking the card out and using an external, proper, reader - so that might help if one needs to move say 10GB of music onto the card.
Bottom line: you can spring for 16GB Class 6 Card (Adata's are good, about U$60 on Amazon), save few bux and get slower card or wait another month for 32GB cards to appear in stores and make your decision _then_
Click to expand...
Click to collapse
I got lucky. I won my 16GB class 6 micro SD card. I do, however, wish to get another 16GB card but don't want to spend the money so I'm waiting for the 32GB to come out and the 16GB to drop in price. 8GB is just not enough for music, apps2sd and nadroid/ext backups. I've been having to compromise and either keep only one nandroid on my SD card or cut down on my music (which I hate doing). A 32GB card would be GOLDEN but I don't even want to think about what that's going to cost.
rashid11 said:
There are 2 distinct things about SD card performance:
1) If one roots and uses APP2SD method, where N1 stores apps on an EXT* partition on on the _card_ , instead of its own, built-in and very limited flash storage, then one would probably want faster performing card so that apps load faster. Especially if you have a game with tons of textures/scenery
2) Unrelated to #1, faster cards should allow faster transfer rates from one's computer to the N1's SD card - so when you have large music/image libs, those
could be moved on/off device quicker. But it appears that N1 limits such external transfer rates, making it moot to go for faster cards (unless you use APP2SD) . One can get faster rates by yanking the card out and using an external, proper, reader - so that might help if one needs to move say 10GB of music onto the card.
Bottom line: you can spring for 16GB Class 6 Card (Adata's are good, about U$60 on Amazon), save few bux and get slower card or wait another month for 32GB cards to appear in stores and make your decision _then_
Click to expand...
Click to collapse
Thanks for the explaination. Now do you think anybody out there is trying to 'open' up this limitation of the N1's transfer speed? Hope so...I thought I had an adapter...so I ordered a card without an adapter...but, now I can't find it!
BTW...I sprung for a 16GB class 6. Was a present...so why not.
Related
Hi all,
I have a SDHC 8gb (Class 4). I tested its speed with J-benchmark. Frequent test shows that the write speed of this SD isn't any better than class 2 sd card i used before(4 gb).
I usually get write speed of 1.5mb/s and read speed of 2.5mb/s. Today I decided to change the buffer size to 8kb and got 4mb/s write speed. This is what a class 4 card should normally hit right?
So, I'd like to know if there's any way i can increase the buffer speed while transfering files from my PC. I'm really having a hard time copying movie files to my sd card. Files transfer of larger than 100mb take ages and even get disrupted at times.
Thanks for the help!!!
pradeepkc said:
Hi all,
I have a SDHC 8gb (Class 4). I tested its speed with J-benchmark. Frequent test shows that the write speed of this SD isn't any better than class 2 sd card i used before(4 gb).
I usually get write speed of 1.5mb/s and read speed of 2.5mb/s. Today I decided to change the buffer size to 8kb and got 4mb/s write speed. This is what a class 4 card should normally hit right?
So, I'd like to know if there's any way i can increase the buffer speed while transfering files from my PC. I'm really having a hard time copying movie files to my sd card. Files transfer of larger than 100mb take ages and even get disrupted at times.
Thanks for the help!!!
Click to expand...
Click to collapse
Random no-name brand? No surprise.. Lots of cheap, slow, unstable storage cards out there these days.
J-Benchmark isn't of much use if you don't know what the real workd transfer speed is, so you might want to try testing it against the computer... Send a large file, time it, see how long before you can safely remove the device.
khaytsus said:
Random no-name brand? No surprise.. Lots of cheap, slow, unstable storage cards out there these days.
J-Benchmark isn't of much use if you don't know what the real workd transfer speed is, so you might want to try testing it against the computer... Send a large file, time it, see how long before you can safely remove the device.
Click to expand...
Click to collapse
well, it says transcend but i'm doubtful. Bought it at very cheap price from a wholesale market.
But there's something I've noticed, the transfer speed is slow through usb only...if i unmount the card and use it through a normal card reader its quite fast...I tried sending a 800mb movie file and it took just above 4 mins....
So, I don't think its the card that's the culprit. puzzled!!! could it be the rom i'm using or froyo itself?
I'm sorry that I can't be of any help, but i got the exact same problem. Bought a 16gb card, kingston brand, class4 (don't expect that much of it, but the stock was class 2, so i figured that it would be ok..)
I get horrible write speed, around 200-250 kb/s (or whatever it's called). Don't remember what the old one did, but it wasn't that bad.
I've plugged the card directly into the PC, and it gets much higher speeds..
Exactly the same problem, as u guys..
Come on, an hour to copy a movie to the phone, that's just not acceptable!
PS: have you tried this?
Mine was allready at 128, but it's probably worth a shot..
http://forum.xda-developers.com/showthread.php?t=921530
Hope anyone has some solutions to this, it's just seriously annoying
Oh, and i've got the desire with cm7 on it, it's not that different from the n1..
It's the phone not the cards. It just doesn't appear able to acheive transfer speeds higher than you'd get with a Class 2 SD card.
In the link i posted, there was a guy who found out a way around the limits of android on a EVO 4g device. I was hoping for a similar fix.. Or just something
Bought a Class 10 Kingmax and disappointed that write speeds are still maxing at 1.5 MBps Waste of money
2.5Mbps in recovery.
SOOOOOO SLOW copying videos over yaaawn.
Using a card reader means switching off the phone, which is not really an option IMHO.
You can benefit from the faster rated cards if you use a card reader, and even better if you buy a second card so that you can load up one while using the other. Quick swap, job done!
I have a Transcent 8GB class 6. I get speeds from 6mb/s-8mb/s.
This may just be a case of me being genuinely unlucky in my purchases but humour me anyway!
Like you lot I have an SGS and with all the recent mods regarding sound I like to use it as my mp3 player, so buying a micro sd card for additional storage was a must.
I had a spare 4gb class 2 card lying around so I've been using that for some months. Finally decided to upgrade to a more meaningful 16gb class 4 card.
Ordered one off Amazon through a seller. As soon as I put the card in the phone, it refused to recognise it but my PC, digital camera, old blackberry 9000 and n95 saw it just fine. So I formatted the card in the pc using the downloadable SD Card formatter as some googling suggested this might return the card to a working state. After that the phone saw a 16gb card, so I copied some music onto it, it worked for about 30 mins and then the card died totally. Upon reinserting it into the pc, windows only saw an 8mb card in RAW format and nothing I've done since has recovered the card. Card was dead.
Anyway I contacted the seller who posted me a nice shiny Kingson 16gb class 6 card right away.
New card arrived last night, appeared in the phone straight away as a 16gb card. Great start.
Plugged the phone in, started copying some music on it - the write speed was incredibly slow. I mean really slow, 100mb of mp3s was taking the best part of 3 minutes. Popped the card in the PC, same problem.
I find that I can actually write data to the card till its full (albeit slowly) but once you've written more than around 4gb of data, the files start to vanish.
I know it sounds incredibly stupid but anything written after around the 4gb mark just doesn't appear when I plug it into the phone or the PC. The card claims it is full, but only 4gb of data is visible, let alone accessible. I've done the usual formatting of the card and changing card readers etc etc but the result is the same and this is starting to grow boring.
So, question. Am I just incredibly unlucky in my purchases or is my SGS killing cards? Because I'm quite weary of buying yet another card now.
Funny enough my old 4gb card still works just fine like it has for years.
I know you'll have a FAT (file allocation table) that usually reserves a predetermined amount of space on the card for file locations. But your memory card should not be able to accept more than whats available and should be displayed correctly no matter what your using. IE pc or phone. Kingston are fairly reputable, but is your dealer reputable. There are a lot of counterfeits out there. I don't believe the phone itself is damaging these cards. Since your stating your old trusty card still works like a champ
Sent from my GT-I9000M using XDA App
ok i have a verizon SGT I800 with froyo 2.2 im going to use the how to here
http://forum.xda-developers.com/showthread.php?t=812367&page=25
will this be all i need? or do i have to get a memory card first?? also if i plan on adding a memory card after i root it will that be effected??
cruzstyle said:
ok i have a verizon SGT I800 with froyo 2.2 im going to use the how to here
http://forum.xda-developers.com/showthread.php?t=812367&page=25
will this be all i need? or do i have to get a memory card first?? also if i plan on adding a memory card after i root it will that be effected??
Click to expand...
Click to collapse
Ok you don't need a memory card, but having one helps later and there are many types of micro SD cards out there so make sure you get the right one (some ones will not work or very badly on smart devices. My advice for that would be a minimum of a Class 4 (if your in Europe can help you). You can get a great class 4 32 gig for about €60 and you get a free movie to boot >:¬} check out the best price for the SD32GBHC4OPTSON-EF (product code) PNY Micro SD card
regarding routing this has yet to fail with me
SuperOneClick can get it here http://shortfuse.org/?p=13 and make sure before you connect that you have USB debugging selected, then once that's done just click root and few moments later happy days!
Hope this helps
To convert to rfs (a faster file system-format) you will need three gigas free in your external sd card.
If you eventually want to install the overcome gingerbread rom (hopefully they will port it to the verizon tab), and I recommend that path, it will convert to rfs, so you will need the sd card.
Also, it is helpful to have the sd card as you install apps, so you can install them on the card, and store the data they generate. It saves the space on your internal card for the system.
how do i find out what CLASS an SD card is i went to the story and looked at sandisk ones and i didnt see anything that said the type of class it was.
Printed on the sd card will be a number, 2, 4, or 6. If it has no number it is generally class 2. The higher the number the higher the read/write speed - higher number, faster data transfer - better for you....
I haven't seen any class 6 micro sd cards as yet in Australia or in my searches on the net.
Class 4 32Gb sandisk & kingston card works well... Also have a class 4 32Gb adata card. Works well too...
I know it has been asked a lot in the past, but searching didn't provide Milestone specific answer.
So If I buy Class 6 or Class 10, will the milestone be able to utilize the full write speed? I am running Cyanogenmod 7 RC0 (latest). At the moment I have 8GB class 4 Apacer microSD and tbh its a terrible card. All I get is 2.5 mb/s write on large files, but I am getting the same speed when the card is in card reader too so its not phone issue.
Thanks.
Maybe I'm wrong, but what I know is that the card class is the limit. It doesn't mean it will read/write at full speed all the time.
How are you testing your speeds?
Maybe SD Speed Increase help you.
https://play.google.com/store/apps/...t=W251bGwsMSwxLDEsImNvbS5zZGluY3JlYXNlLml0Il0.
I don't know how to test my speeds, but were getting 24mb/s read and 8mb/s write speeds in SD Tools ( https://play.google.com/store/apps/...1bGwsMSwxLDEsImFsZXMudmVsdXNjZWsuc2R0b29scyJd ). I'm using a Samsung 16gb Class2. I think the app is not calculating very well. Don't know.
I am using the SD card as USB mass storage instead of carrying separate thumb drive. I transfer a lot of large 1+ GB files.
I tried SD Speed increase last week and it does make a difference on smaller files, but when copying 2GB files it seems to start fast (like a burst mode), but if timed it takes exactly the same time to write something on the card.
I am going to change my 8GB card for 16GB today anyway I just wondered if class 10 is worth getting or should I get class 6 and save some money. Whatever I buy I will report back and test the speed.
I went ahead and bought Patriot LX 16 GB class 10 microSD. Now I get variable speeds from 3.5 mb/s to 8 mb/s depending on the file sizes. As I read somewhere this is due to fact that the phone is using MTP protocol to act as mass storage device.
Anyway with the old card I was topping only 2.5 mb/s no matter the file size, so it's definitely an upgrade and since class 6 was only 5$ cheaper I saw no reason not to buy the faster one, even if the milestone can't utilize its full capability. In the end its an old phone and I believe there weren't any class 10 cards out in 2009 anyway.
And one more thing, the camcorder isnt lagging anymore when recording videos
EDIT: After booting in recovery and clearing dalvik and cache partition I am getting 9.5 + mb/s, but it does start around 4.5 mb/s and then rises to its full speed. Cheers.
Except for the improvements in video recording, is there anything else that runs smoother for you when using the phone?
maango said:
Except for the improvements in video recording, is there anything else that runs smoother for you when using the phone?
Click to expand...
Click to collapse
I think everytime any app need to access your sd, it will be smoother, like gallery, taking photos, loading maps cached in sd, music apps indexing songs, etc. Accessing apps installed on sd card may be loaded faster too.
extrem0 said:
I think everytime any app need to access your sd, it will be smoother, like gallery, taking photos, loading maps cached in sd, music apps indexing songs, etc. Accessing apps installed on sd card may be loaded faster too.
Click to expand...
Click to collapse
Thats right. Gallery loads faster, applications and games moved to SD start up faster etc. Don't know about maps, but I suppose they cache faster too.
However the main difference is when copying stuff to phone in mass storage mode. Thats why I got a higher class card in first place. While all other stuff related to reading from SD do seem snappier, the difference is not all that great since even Class 2 cards can read with high speed, but when it comes to apps that are writing the difference is obvious.
I'm using a Samsung Essentials 32GB Class 10 Card.
Gave me some troubles at first, something with sector sizes seemed wrong - but after formatting it with this tool https://www.sdcard.org/downloads/formatter_3/ it worked.
Someone in these forums suggested the tools - search for the link to find the recommended settings.
Alright, thx for the answer. For someone not using the phone the same way as you, do you think it would be worth the money to get a faster card?
Sent from my Milestone using XDA
The difference between class 6 and class 10 right now is only few bucks. I don't see why not. You never know, may come in handy.
Here check this out, less then 1$ difference in price.
16GB microSDHC CARD Class 6 - Transcend
16GB microSDHC CARD Class 10 - Transcend
I wouldn't go below class 6 since the camera is lagging when recording videos.
Is it true that if a formatted microSD often will make it slow microSD?
It' unlikely, but possible.
My Samsung Essentials 32GB Class 10 card gave my Milestone hiccups at first (rebooted several times when powering on, rebooted every time I left USB mass storage mode) so I re-formatted it using these instructions: http://forum.xda-developers.com/showpost.php?p=23494134&postcount=7417
Now everything works fine and I still get a little more than 10MB/s when copying movies via USB - so no loss here.
Hi guys,
What is the fastest memory card speed G6 (not plus/play) can use? Somewhere I read Motorola recommends U1 or faster. Is it worth investing in a fast card?
E.g. a Sandisk 32GB 100/90 MB/s is the same price as a Samsung 64GB 100/60 MB/s so if the phone couldn't use the fastest speed anyway, I'd rather take larger capacity.
I'm planning to put apps on the card. My old phone has slowed down considerably when I did that, so if the G6 CAN use the faster speed, I'd prefer that.
Thanks!
Sandisk 160/60 card gets 77/44 on moto g6. The same card gets higher speed on a lower end phone. Apps run okay at that speed on g6 but don't know if consistent use for apps lowers overall performance. Other users should post their speeds so we can get an idea what's the max speed g6 can get out of microsd cards.
Actualy in the meantime I bought the Sandisk Extreme Plus A1/V30 (95/90 MB/s), I just haven't installed it in the phone yet.
@e4noob what app did you use for benchmarking?
//Edited card name/specs
dontknowme said:
Actualy in the meantime I bought the Sandisk Extreme Pro A1/V30 (100/90 MB/s), I just haven't installed it in the phone yet.
@e4noob what app did you use for benchmarking?
Click to expand...
Click to collapse
I used androbench. Please post the speeds on this card. I'll predict around 80/50. I have this suspicion that g6's card reader might be low quality. But it would be nice to be proven wrong on that.
e4noob said:
I used androbench. Please post the speeds on this card. I'll predict around 80/50. I have this suspicion that g6's card reader might be low quality. But it would be nice to be proven wrong on that.
Click to expand...
Click to collapse
Okay I put the card in the phone and ran 4 tests with Androbench. The *best* results, rounded up to 5/50 from each category are:
Squential read/write: 80/65 MB/s
Random r/w: 4200/1400 IOPS
SQL Insert/Update/Delete: 950/1200/1900 QPS
This is a brand new Sandisk Extreme Plus 32GB card (95/90 MB/s) formatted as external storage.
Also ran 2 tests on internal storage (note this phone has been in use for 2 weeks and it's half full so there's certainly some data fragmentation):
Squential read/write: 260/100 MB/s
Random r/w: 11600/5300 IOPS
SQL Insert/Update/Delete: 1100/1200/1550 QPS
Not sure what to think of the SQL numbers but in the random r/w performance the internal memory trashes the memory card so it's probably not the best for running apps. Sequential write is quite close though so I guess Sandisk's claim of 4k video recording holds true.
Hm, I wonder if there are memory cards meant for faster random access (like an SSD) and would phones be able to take advantage of such speed?
Edit: fixed my mistake about what card I have. It's a Extreme Plus 95/90, not Pro.
~ never mind, a rant was here how I can't format the card as internal storage but I found it. Good.
After formatting as internal, the phone complained the card is slow.
I let it move 4.5 GB of data from internal memory to the card, which the phone said would take 7 minutes. It was done in about a minute.
dontknowme said:
~ never mind, a rant was here how I can't format the card as internal storage but I found it. Good.
After formatting as internal, the phone complained the card is slow.
I let it move 4.5 GB of data from internal memory to the card, which the phone said would take 7 minutes. It was done in about a minute.
Click to expand...
Click to collapse
I've seen that too (phone warning the card is too slow) when I was experimenting with internal storage format. If you face any issues like phone wigging out or apps going missing or card crashing, let us know here.
e4noob said:
If you face any issues like phone wigging out or apps going missing or card crashing, let us know here.
Click to expand...
Click to collapse
No problems so far!
On my last phone with a basic Class 10 Kingston card, I had problems with apps disappearing after a reboot. It was especially annoying with Amazon Kindle which was the biggest (movable) app and I had to keep it in the phone memory.
No problems with the Moto. I even enabled the developer option to force apps which don't support it onto the card and they all work fine. Which is super cool especially for navigation apps with their massive offline maps. Neither Sygic nor HERE We Go support moving the app onto the card. (In both cases you can move the maps onto the card but only if it's formatted as external storage, not internal.)
Apps start really fast. I *think* I can sense some slowdown when running some apps like Duolingo and LingoDeer compared to when running from internal memory, but it might as well be my imagination. I see no slowdown when running Waze which is a lot larger. And the phone is slightly slower to boot but that's no biggie. It wasn't fast to begin with. But all the card apps are available IMMEDIATELLY upon booting, while on my old phone/card it took another minute to initialize.
Last night I noticed the phone tends to kill background apps way too aggressively, which is bloody annoying but I doubt that has anything to do with the card, it's more like another stupid Android/Motorola feature. (I have the adaptive battery feature disabled.)
Another odd thing is that the storage reports 5 gigs of games in the internal memory even when I moved all games onto the card, so that's clearly another Android bug.
So yea, I think it was worth it investing a little more in a faster card. I wish the phone would be faster overall but for what it is it's fine and the card isn't slowing it down so far.