Database Develop

SDCard Transfer Speeds

Picked up a Patriot 16 GB card (class 4) and while I know its a class 4, it seems the transfer speeds are fairly slow. Unfortunately I'm in XP so its not telling me what the transfer speed is.
I first put the card in the N1 and let it format it. I then tried to bring over all the data on my old card and it was super slow (like 50kb a sec-was at home and Vista so it told me). Now I'm at work and this time it brought over all my old data more quickly but it still seems slowish (Gonna copy over a couple GB of music today).
Do they just have this slow transfer speeds? Its cool if thats the way it is, I don't mess with SDCards so don't have any experience with them.
Right now I'm bringing over a little over 500 MBs and it looks like its gonna be 30 mins for it to do it at least. The mins remaining is all over the place.
Also, the phone formatted the card in fat32.
I tried the SD Card Formatter download I've seen mentioned on here but it wouldn't install for me on my computer.

Use an sdcard reader. It will be much faster to transfer data.

Yup, faster transfer now.
I knew that but had a brain fart.

[Q] MicroSD 16GB Class 10 write speed

Ok i finally bought micro sd card for my galaxy s. But a problem came up. When im transfering via USB Cable, transfer rate is barely 4mbit/s and when I put it in SDHC adapter and into my laptop card reader, i got transfer rate of 19mbit/s and read speed of 22mbit/s
My question is, can anyone explain to me why is it so slow over usb cable?
Just to mention, I already tested on mobile with mobile software and i got same results as with SDHC adapter and card reader....

Have you tried to put the USB-mode into Mass Storsge mode. Settings->Wireless and Network ->USB Settings ->Mass storage. This mode will only show the internal memory and the SD Card in Windows explorer. I think it is also much faster.

Yup, i tried only on that way tbh and transfer rate is still max 4mbps, and in sdcard 19.47
Weird thing is that i know that i got original card, its not scam, i ordered it from official supplier in my country...

bump anyone

I'm sure I read on a thread somewhere that the phone can't use the speed of a class
10 card and you don't get any faster speeds than a class 4, would like to know the facts on this
Sent using geek power

gsw5700 said:
I'm sure I read on a thread somewhere that the phone can't use the speed of a class
10 card and you don't get any faster speeds than a class 4, would like to know the facts on this
Click to expand...
Click to collapse
Get a free sdcard tester in the market and test it by yourself. I would be really surprised if a i9000 could do above class 6 even after tweaking readahead and buffers.

I tested it with SD Tools and got these results

Mine is meant to be a class 10, not very good result if it is:

I got this result with a Class 2 SanDisk:
View attachment 690542

[Q] Milestone highest SD Class I can go with

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?
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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.
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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.

Best sd card for p9 +

Hi everyone
Just want to ask :
What is the best sd card the p9 + ?

I have Samsung Evo Plus 64 GB, work fast and i never had a problem.

VampireHeart said:
I have Samsung Evo Plus 64 GB, work fast and i never had a problem.
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what about sandisk ?

DON AMIGO said:
what about sandisk ?
Click to expand...
Click to collapse
Never tried on smartphone but I think are good, I had only Samsung sd card on my devices.

I think the answer could be very broad but the best to answer this question is "use the best sd card". I was also asking this question previous day and searching info for it. Then only I realized there are some things working behind that if we don't know, we will choose the sd card solely on the info of the packaging.
As you may aware, the packaging of sd card shows that how fast is the "read speed" and "write speed". I have done some searching and only to find that the actual important part for sd card to be in "excellent" range" does not only rely on these 2 factors. These 2 factors are only telling you how fast the files could be transfer if you copy in or out from the sd card, say using computer with card reader. But when u are using the sd card slotted in your phone, factors that affect the speed of write and read is something else called " random read or write" , 4k read and write (here 4k is not indicating the resolution) , these factors do not show in the packaging. You can only find it through website where people run the test on the sd card and get the results. To justify this, I bought a cheap sd card (class 10 speed, UHS1) and a Samsung pro (same) and when I taking the picture with the cheap one, it takes sometime for it to save the picture whereas for Samsung pro it is immediate. Same when trying to load the picture gallery, the cheap card loaded the thumbnails slower whereas Samsung pro is blazingly fast. So I believe the claim that random read and write plays the actual role of the speed. The reason being samsung pro sd card has the highest random read and write speed (and so for other factors as well). That's for last year of the results. Few months ago I did check on the updates and found that sandisk extreme pro top the list in random read and write and other factors.
So u can do a check on the things I mentioned and choose the correct card. By the way that is not the only factors as well, it also depends on the maximum transfer rate of the sd card slot on your phone. It's the same principle as getting an AC router but with N band phone will not give u the AC speed. This you will have to search for the info again to see if anybody test the phone's card slot transfer speed. Then u will have a lot of homework
But to simplify I will also suggest u to get the Samsung evo (cheaper than evo+ but with higher random read and write speed) or if u want a really good one, get Samsung pro or pro+. Quality wise certainly no need to worry. If that's not what u concern, then simply get the one with high transfer rate written on the packaging, there are a lot of good brand u can choose from and with cheap price too

Min Speed of SD Card
How much minimum speed of an SD card required for installing an update or software on a mobile phone e.g Huawei P9?

Memory card speed

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?
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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.
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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.