SD card - are R/W speeds really so bad? - Sony Xperia X Questions & Answers

Hi,
I'm considering a purchase or Xperia X, but in one review (notebookcheck.net) they found very poor read/write speeds of external microSD card (only 17MB/s read and 13MB/s write - both are sequential). Have you tested it and are the speeds really so horrible? Thx.

it depends on the quality of your actual SD card being used. Currently using the Samsung Evo+ 64GB SD and I get over 50MB/s speed.

Thank you for your reaction. 50MB/s in Xperia X sounds promising . In the review (notebookcheck.net) they used Toshiba Exceria Pro M401 (very good SD card - R90/W80). Maybe compatibility problem between Xperia X and Toshiba Exceria. And your 50MB/s is read or write, or both?

robocopvn said:
it depends on the quality of your actual SD card being used. Currently using the Samsung Evo+ 64GB SD and I get over 50MB/s speed.
Click to expand...
Click to collapse
With the same SD I get 30 mb/S read and 20 write. Empty and freshly formatted
Sent from my F5121 using XDA-Developers Legacy app

Thank you, Invicta. Your speeds are not spectacular, but I think they are sufficient.

write speeds are ok, read on the other hand is on the low side i think.

So finally I bought Xperia X and here is my experience: Sandisk Extreme 64 GB - R/W 30/30 MB/s. Speed is not the best but sufficient for me. I also tested Samsung Evo+ 32 GB, speed is lower than Sandisk. (27R/20W).

Invicta said:
With the same SD I get 30 mb/S read and 20 write. Empty and freshly formatted
Sent from my F5121 using XDA-Developers Legacy app
Click to expand...
Click to collapse
I get ~50MB/s read and ~30MB/s write. Don't know if it is in the variable range of the product but 20MB/s difference over 50MB/s is alot

Related

[Question] Class 10 Speed

Hi, I've recently purchased a class 10 16 gb sdhc card for my phone on ebay. I got 15MB/s write and 15MB/s read using the SD Card Speed Test application and i got 2MB/s write and 10MB/s read using my stock Class 2 8 gb sdhc card. Now I need to leave feedback and could anyone from this forum please tell me if this is a good speed for a class 10 card or did i get ripped off?
Eryklok said:
Hi, I've recently purchased a class 10 16 gb sdhc card for my phone on ebay. I got 15MB/s write and 15MB/s read using the SD Card Speed Test application and i got 2MB/s write and 10MB/s read using my stock Class 2 8 gb sdhc card. Now I need to leave feedback and could anyone from this forum please tell me if this is a good speed for a class 10 card or did i get ripped off?
Click to expand...
Click to collapse
Yeah you got ripped off because class 10 should give you 30mb/s read write
/sarcasm mode
Sent from my SAMSUNG-SGH-I897 using Tapatalk
LOL
Thats the speed of Class 10 dude !
you got what you paid for
but you can get better result by modifying buffers
you mean use a script to change the reading speed? yeah i know. and thanks for the replies guys i was just making sure no need to make fun of the noob greenstuffs :/
yep, thats what i mean,
it will speed up, read and write both ways !
Your write speed is really good, got 15MB/s, too with my Kingmax 16GB c10, but only once.
To improve your read speed you should install the app "SD increase", then you should get 25-30MB/s read or even more. My Kingmax is cheap (32€) because of that I "only" get 25-30MB/s read using the SD increase app.
When I changed the cache myself I got 40MB/s read, but after a reboot the changes are gone so I prefer the SD increase app.
@ zmbutt:
I think his write speeds won't increase (much), 15MB/s are already really high and not really affected by the buffer size.
it made no change at all :/ i got mine for $35 AUD lol

[Q] Is 16GB enough for SGS3 and everyday comprehensive use?

I know, i can have external memory, but it is slow comparing to NAND internal memory
How much of internal memory will left after all the system? 11GB?
On my galaxy s 16gb (rough comparison) SD card partition is 13.4 and app partition is 1.8. Rest is system partitions.
Touchwiz will probably take a bit more and Samsung may partition differently.
Its enough for me end up with 4gb free
With 5gb music.
Sent from my SGH-T959 using Tapatalk 2
if i read it right the built in 16 gb will have 10.5 gb usable as internal sd which is 1 gb lesser than my sgs2. Thank god sgs3 has the sdcard slot .
bala_gamer said:
if i read it right the built in 16 gb will have 10.5 gb usable as internal sd which is 1 gb lesser than my sgs2. Thank god sgs3 has the sdcard slot .
Click to expand...
Click to collapse
I am getting the 64gb version plus the 64gb SD XC card I got now....128gb heaven....
pachi72 said:
I am getting the 64gb version plus the 64gb SD XC card I got now....128gb heaven....
Click to expand...
Click to collapse
Do you really carry 128 gb of data's with your phone. Then get a extra battery too.
Sent from my HTC One X using Tapatalk 2
forumhookersdotcom said:
Do you really carry 128 gb of data's with your phone. Then get a extra battery too.
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
Yes I do.. And that data is my music.. I don't like cloud streaming at all.
sent from a 96gb N7000
Taken from http://forum.xda-developers.com/showthread.php?p=25767422#post25767422
Partition sizes:
/system: 1G (might more: df command rounding error), 315Mb Free.
/data: 11G (shared with /sdcard, pure Ext4)
/cache: 1G
Mount options: optimized Ext4 settings (same as those introduced in Voodoo lagfix)
Sd Cards & additional storage.
Internal: /mnt/sdcard
External: /mnt/extSdCard
USB sticks: /mnt/UsbDriveA to FAK8975C
Click to expand...
Click to collapse
Damn ill take a 16 gb and 16 ext. Also the ext battery but deff not both 64.
Where have you seen info about extended batteries?
I never use more than 3 gig on my phone so 16 gig is plenty. Out of the 3 gig that I use, most of it is ROMs and kernels that are on it
... ... ...
I'll be happy with the 16GB one, already have a 32GB card but i may get a 64GB card too.
Yes. Put a 62 GB SD card in it and there you have it you will never run out of storage. Plus you can utilize the Dropbox Storage they give u
---
To each their own.
I think I'll buy a 32 Gb phone and buy an sd later as and when required. (Since internal memory is faster)
Sent from my HTC Desire using XDA
CoNsPiRiSiZe said:
Yes. Put a 62 GB SD card in
Click to expand...
Click to collapse
You meant 64 GB
i think ill grab a 16GB version of the GS3..already have class 4 32GB never used it had it on my note but i returned it due to pixel issues..still a virgin but now i might get the higher speed sandisk 64GB.. that way when i get new Nexus/NOTE2/GS4 ect.. ill just buy the ones that have the lowest GB built inn and just popped the 64GB.. im good with a built in 16GB..got to love this SD slots coming from a iphone/ipad user..still like my apple stuff but its time for a change
question ? whats faster internal memory or the new Sandisk card when the phone reads it..i mean the Sandisk reads 30mb sec* i mean that plenty fast already..will there be a big difference when the phone reads the internal memory or the SD high read cards.?
will my class 4 32GB work good enough on the GS3? will there be like a little lag due to its a calss 4? or thats good enough?
markysd said:
i think ill grab a 16GB version of the GS3..already have class 4 32GB never used it had it on my note but i returned it due to pixel issues..still a virgin but now i might get the higher speed sandisk 64GB.. that way when i get new Nexus/NOTE2/GS4 ect.. ill just buy the ones that have the lowest GB built inn and just popped the 64GB.. im good with a built in 16GB..got to love this SD slots coming from a iphone/ipad user..still like my apple stuff but its time for a change
question ? whats faster internal memory or the new Sandisk card when the phone reads it..i mean the Sandisk reads 30mb sec* i mean that plenty fast already..will there be a big difference when the phone reads the internal memory or the SD high read cards.?
will my class 4 32GB work good enough on the GS3? will there be like a little lag due to its a calss 4? or thats good enough?
Click to expand...
Click to collapse
No, there won't be any lag
Class 4 is good ....
Sent from my Xperia Ray using xda premium
I'll buy 32GB SGS3
Sent from my Xperia Ray using xda premium
markysd said:
i think ill grab a 16GB version of the GS3..already have class 4 32GB never used it had it on my note but i returned it due to pixel issues..still a virgin but now i might get the higher speed sandisk 64GB.. that way when i get new Nexus/NOTE2/GS4 ect.. ill just buy the ones that have the lowest GB built inn and just popped the 64GB.. im good with a built in 16GB..got to love this SD slots coming from a iphone/ipad user..still like my apple stuff but its time for a change
question ? whats faster internal memory or the new Sandisk card when the phone reads it..i mean the Sandisk reads 30mb sec* i mean that plenty fast already..will there be a big difference when the phone reads the internal memory or the SD high read cards.?
will my class 4 32GB work good enough on the GS3? will there be like a little lag due to its a calss 4? or thats good enough?
Click to expand...
Click to collapse
San disk 64gb is class 6
sent from a 96gb N7000
NAND memory, the integrated one, is the one used in SSD disks. It is faster than SD cards

SDCard Help...!

Hi
Please any one live in Jordan-ME
Help me with SdCard
I want 8GB or 16GB SDcard for my XM ?
How much will cost me and any advice before i buy it ?
Sent from my ST15i using xda app-developers app
hejawi said:
Hi
Please any one live in Jordan-ME
Help me with SdCard
I want 8GB or 16GB SDcard for my XM ?
How much will cost me and any advice before i buy it ?
Sent from my ST15i using xda app-developers app
Click to expand...
Click to collapse
Don't know how much will it cost.
Priority is card speed. Higher class is faster: http://en.wikipedia.org/wiki/Secure_Digital#Speed_Class_Rating
dont know the cost...my advice go for sandisk HC mem card class6 or a class 10...ur phone performance vl increase gradually ..
iam using a class 6 16gb my xpm is pretty faster than before.
sandy7 said:
dont know the cost...my advice go for sandisk HC mem card class6 or a class 10...ur phone performance vl increase gradually ..
iam using a class 6 16gb my xpm is pretty faster than before.
Click to expand...
Click to collapse
Phone performance isn't affected by SDcard.
The only difference you can see is when you read/write files from SD, nothing more.
Web browsing doesn't get faster with higher class SDcard. Calling doesn't get better with higher class SDcard.
And Class 4 is enough for Android, I've never had problems with it and the speed is enough for me.
Someguyfromhell said:
Phone performance isn't affected by SDcard.
The only difference you can see is when you read/write files from SD, nothing more.
Web browsing doesn't get faster with higher class SDcard. Calling doesn't get better with higher class SDcard.
And Class 4 is enough for Android, I've never had problems with it and the speed is enough for me.
Click to expand...
Click to collapse
If you want to copy about 4 GB of data to SD from PC with class4 card and then copy same file/s to class10 card the time is a lot shorter with class10!
This is why many people use higher card class.
And when you want to have system in externel memory* this require minimum class6 card to avoid lags.
* e.g. HTC HD2
my Sdcard is 16GB class 10 (sillicon power) and write speed is 8 - 9 MB/s and read speed is 16 - 17 MB/s , this is very nice SDcard
Someguyfromhell said:
Phone performance isn't affected by SDcard.
The only difference you can see is when you read/write files from SD, nothing more.
Web browsing doesn't get faster with higher class SDcard. Calling doesn't get better with higher class SDcard.
And Class 4 is enough for Android, I've never had problems with it and the speed is enough for me.
Click to expand...
Click to collapse
I agree with u...but music player and video playback performance increases...and also after a reboot when u have apps installed in the sd it loads faster in the app drawer.
Sent from my SK17i using XDA App
I think you should use SD 8GB :laugh:

[Q] Micro SD cards

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!

[Review/Benchmarks] SanDisk microSDXC Class 10 UHS-I (several versions available)

Mini Review:
All these cards come at the speeds they're advertised at. HOWEVER, and this is very important!: It should be noted that the R/W speeds will differ greatly depending on if you're running exFAT or NTFS.
Benchmarks:
See below for the speeds, though you should keep in mind that your average tablet or phone will most likely throttle the speeds since the voltage output is way lower than on a desk/laptop.
Benchmarks for 128GB 45MB/s, 128GB 80MB/s, 200GB 90MB/s using exFAT:
Benchmarks for 128GB 45MB/s, 128GB 80MB/s, 200GB 90MB/s using NTFS:
I use my trusty Silicon Power USB 3.0 AIO card reader for these tests in case anyone is curious. See attached pictures below for reference when buying say off shady sites or retailers as fakes are easy to come by.
Thanks for the info!
Do you think there is any advantage in getting a microSD card with faster Read/Write speed. such as the Samsung Evo+ or Pro? or is the Read speed limited by the Shield K1's microSD slot?
If you are using marshmallow (6.0) the faster write speeds can be advantageous when using the SD card as internal storage. Apps on the SD card will use the SD card for writing temp files.
schmacky said:
Thanks for the info!
Do you think there is any advantage in getting a microSD card with faster Read/Write speed. such as the Samsung Evo+ or Pro? or is the Read speed limited by the Shield K1's microSD slot?
Click to expand...
Click to collapse
Depends on what you're after really. If you only plan on filling it up with Plex/media content, then speed shouldn't be an issue for most once it's there. But if you plan on writing 100GB worth of content back and forth daily, then I would recommend a faster sdcard.
If you plan on using it as internal storage in conjunction with the internal one (feature introduced with 6.0) then I would also recommend a faster card so it matches the eMMC onboard storage speed since it's faster than this sdcard I currently have, not to mention if you plan on gaming (Android and or Shield only games) a lot on this device. For emulathors and stuff this card is enough.
Has anybody some experience with one of those?
-SanDisk Extreme Pro microSDXC (up to 95MB/Sec, Class 10, U3)
-Kingston SDCA3/64GB microSDHC/SDXC (UHS-I U3, 90R/80W)
According to this fairly recent comparison and benchmarks, they are one of the best:
http://www.techfunology.com/electro...for-photography-action-cams-and-videocameras/
I will hopefully update the thread with the 128GB 80MB/s version as of tomorrow as I managed to snag one for a little over 50€ (Remember, EU here! We have no luxury with 200GB microSD cards being sold for the same price or having 1 gallon of whatever costing the same as 1L of equivalent substance).
edit: no package until monday... sadface.jpg.
poo any decent 64gb cards? was looking at the Samsung evo or SanDisk Ultra 64 GB up to 80 Mbps
@ady702: actually yes.
I made a short benchmark of my 64GB Kingston card (that I mentioned above already):
Results: SD Card - Performance comparison ExFAT vs. NTFS (Benchmark)
Vankog said:
@ady702: actually yes.
I made a short benchmark of my 64GB Kingston card (that I mentioned above already):
Results: SD Card - Performance comparison ExFAT vs. NTFS (Benchmark)
Click to expand...
Click to collapse
so the Kingston would be better than the other two? or is it down to the formatting?
It just means, the Kingston is good.
Though, the thread particularly only tells you that you should format sd cards as NTFS.

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