I have been using Pocket Mechanic to check the read/write speed of my Transcend Transflash (MicroSD) card.
I am getting 1.4MB/s Read speed, but the write speed is showing as 0.02MB/s.
That seems very slow, what is anyone else getting?
MaskedMarauder said:
I have been using Pocket Mechanic to check the read/write speed of my Transcend Transflash (MicroSD) card.
I am getting 1.4MB/s Read speed, but the write speed is showing as 0.02MB/s.
That seems very slow, what is anyone else getting?
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Click to collapse
is the memory card formatted for fat 32 ?
It made no difference the read/write speeds were the same FAT16, FAT32, various block sizes etc. about 10 different combinations.
Related
i plan to buy 1 GB SD card,should i but 133x or 150x or enough on 60x? i need advice.thanks
Speed...
It really does not matter
robertussigit said:
i plan to buy 1 GB SD card,should i but 133x or 150x or enough on 60x? i need advice.thanks
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Click to collapse
It doesn't matter, as typical speed is around 200kbytes/s fo read/write. Don't know anybody, who reached much more. Some other PDAa with selected cards can reac even 1MB/s, but it's rare. You should think more about capacity, than speed. Speed is only needed for computer reader point of view - when you trasfer data to/from the card.
ok,
so i bought an 8gb kingston micro sd card, tested it with hw id and got 8mb/s write speed,
partitioned the card using gparted (allign to mib) with a 1gb ext and the remainder as fat32,
used sd card tester on my desire and it says write speed is 3mb/s or under,
so i tried sd speed increase set to 2048kb, atill 3mb/s or less write speed,
any ideas?
He,
I got also a Kingston 8GB Class 10 in my Desire (1GB Ext4 & Rest Fat32).
My speeds just for your ref.: 6.2MB/s writing, 16.4 MB/s reading with 2048kb.
I tried nearly every setting in SD speed increase but could not get over 6.x MB/s
---edit
just saw that we are running the same ROM (same kernel). maybe its ROM related as I also not have full 10MB/s? or its the SD card?
well i reflashed the rom without repartitioning the card and now im getting 6mb/s write speed,
better but still not as good as when i test the cards speed on my pc,
im not that worried about improving read speeds, i was just hoping that the faster write speed would solve some of the video recording lag i am getting,
maybe the cards you guys bought is not genuine but a chineese replica. you know how many fakes ciculate in market.
I have class 4 Sandisk 16gb card and I get 5mb writing speed. 12mb reading...
if a class 10 card has 6mb then I would doubt either the Testing software or the genuineness of the card
jjdoctor said:
maybe the cards you guys bought is not genuine but a chineese replica. you know how many fakes ciculate in market.
I have class 4 Sandisk 16gb card and I get 5mb writing speed. 12mb reading...
if a class 10 card has 6mb then I would doubt either the Testing software or the genuineness of the card
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Click to collapse
but when i do a speedtest from my pc via a card reader i get 8mb/s when i test the same cards speed in my phone i get 6mb/s, where does the 2mb/s go?
Try formating the cards on a pc. Full format/ factory condition. Then insert them on a stock rom phone to test the speeds. It's the only way to check them and be 100% sure.
Sent from my HTC Desire using XDA Premium App
SD speed reports my pny 8gb class 10 as writing at 8mb/s and reading 28 MB/s.
I have a 1gb ext4 partition after a 6.5 gb odd fat32 partition. Currently running leedroid latest R5 HD Rom.
Got it from play.com
Sent from my HTC Desire using Tapatalk
Did you try this tutorial?
I got a Samsung 32 GB Class 10 microsd card today and formatted the it into NTFS in Windows 7, and copied a big file, the speed met the nominal value about 13 MB/s. But I found out later that android does not recognize NTFS format. Therefore I reformatted the card into FAT32 in Galaxy S2. But when I copied the same file into the card under Windows 7, the writing speed decreases to about 5 MB/s. Later I used the app called "SD Card Speed Tester" to test the speed, it told me the card is a Class 6 card!!!
Is there anyone having the same problem? The only solution I can come up with is to format the sd card into ext2 and try again. Can anyone tell me how to do it with the phone, is there an app for that?
Thank you in advance!
I'm sorry to be the one telling you this but you might gotten a fake one...Where did you buy your sd card?
I bought it from a German company. Nevertheless, I just test the card (still with FAT32) with the original SD adapter under Windows 7, the writing speed is about 10MB/s, which is more close to the nominal value. So I think it is the problem between GS2 and the card.
Any idea to format the card with ex2 by GS2?
Sent from my GT-I9100 using XDA App
You should see better performance with NTFS, that is normal. Still, your speeds are unusually low.
xethor said:
You should see better performance with NTFS, that is normal. Still, your speeds are unusually low.
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Click to collapse
Finally, I test the card with adapter under Windows 7 on my laptop using h2testw for NTFS and FAT32 format, both of them have the same performance, about 10 MB/s for writing. And I also inserted the card with FAT32 format in milestone, the writing speed is still about 5 MB/s, I did not test with NTFS format.
The card costs me 30 euro, and it functions normally with adapter, so I don't bother to return it. However, I am warning you guys, do not buy SAMSUNG 32 GB Class10 sd card, it can only achieve around 5 MB/s with FAT32 format.
Derp.
If you can fill the card it's not a fake, the only problem here is your expectations from the i9100's sd card reader.
To the Community:
I use one of these puppies:
http://dx.com/p/sd-to-microsd-transflash-card-converter-module-27001#.UvLz3PldWSo
so I'm in the market for a 128gb SD card.
I've searched but cannot find the theoretical maxima for read / write speeds for the GN10.1-2014 and I don't wanna buy too much card for the hardware.
I'm contemplating the Lexar Pro or the SanDisk Extreme Plus.
Any recommendations?
Thanks in advance everybody...
SanDisk has proven to be reliable and fast SD card. At least for the 64GB model.
Sent from my SM-P605 using Tapatalk
whatllitbenext said:
To the Community:
I use one of these puppies:
http://dx.com/p/sd-to-microsd-transflash-card-converter-module-27001#.UvLz3PldWSo
so I'm in the market for a 128gb SD card.
I've searched but cannot find the theoretical maxima for read / write speeds for the GN10.1-2014 and I don't wanna buy too much card for the hardware.
I'm contemplating the Lexar Pro or the SanDisk Extreme Plus.
Any recommendations?
Thanks in advance everybody...
Click to expand...
Click to collapse
Hello whatllitbenext,
here are benchmark results for the internal flash memory. Taken from http://www.notebookcheck.com/Test-Samsung-Galaxy-Note-10-1-2014-Edition-Tablet.105624.0.html
AndroBench 3
Sequential Read 256KB
103.96 MB/s
Sequential Write 256KB
22.35 MB/s
Random Read 4KB
15.97 MB/s
Random Write 4KB
2.09 MB/s
best regards
Getrid …
Getrid said:
Hello whatllitbenext,
here are benchmark results for the internal flash memory. Taken from http://www.notebookcheck.com/Test-Samsung-Galaxy-Note-10-1-2014-Edition-Tablet.105624.0.html
AndroBench 3
Sequential Read 256KB
103.96 MB/s
Sequential Write 256KB
22.35 MB/s
Random Read 4KB
15.97 MB/s
Random Write 4KB
2.09 MB/s
best regards
Getrid …
Click to expand...
Click to collapse
Thanks Getrid.
What about to the external SD card? Is a 90mb/sec. read, 45 mb/sec. write SD card overkill?
whatllitbenext said:
Thanks Getrid.
What about to the external SD card? Is a 90mb/sec. read, 45 mb/sec. write SD card overkill?
Click to expand...
Click to collapse
Depends on how you want to use your tablet. If mainly for (HD) video recording/watching movies a fast card with high sequential r/w stats would be my first choice.
On the other hand, my experience from using my HTC HD2 with multiple OS booting from SD tells me, that sequential r/w speed doesn't matter when dealing with a lot of smaller data sizes, like from apps. In that case decent random r/w stats, (random) access time and also IOPS/sec come largely into effect - that is a class 10 card won't pay off and you should better watch out for a, for example, class 4 or 6 card from Sandisk.
You may also have a look at this very interesting thread:
http://forum.xda-developers.com/showthread.php?t=1947560
Kindest regards
Getrid …
Is there a large speed differance between internal and SD memory ... loading programs and data ?
Yes, huge. View attachment 4698499
Sent from my SM-T830 using Tapatalk
I have similar speeds, for the internal card.
With a 400gb SanDisk Ultra UHS-I card "up to 100MB/s" read SPEED I have a write speed that's slower, ~ 15 MB/s. Read was 80MB/s. I guess getting 80 MB/s is "up to 100MB/s"
For the fun of it, I tried my USB-C memory stick and got 73MB/s read and 15 MB/s write.
I have video on my external card, and have not had any read issues.
drjoe1 said:
I have similar speeds, for the internal card.
With a 400gb SanDisk Ultra UHS-I card "up to 100MB/s" read SPEED I have a write speed that's slower, ~ 15 MB/s. Read was 80MB/s. I guess getting 80 MB/s is "up to 100MB/s"
For the fun of it, I tried my USB-C memory stick and got 73MB/s read and 15 MB/s write.
I have video on my external card, and have not had any read issues.
Click to expand...
Click to collapse
Yea, my external microsd card is of the same lineage as yours, I bought the 200g a1 UHS-1 card and on my PC I was getting 87mbs and 40 something mbs read/write using Crystaldiskmark which is consistent with what I'm getting using the Android benchmark app. You're write speed should be higher than that. I just had an issue with an old "Ultra" card and the write sped dropped to under 10mbs. I logged onto Sandisk and they agreed that it was bad and are sending me a new one. If I were you I would use Crystaldiskmark v6 and run some tests on your PC and screen capture the results. If you continue to get write speeds like that I'd create a ticked on the Sandisk site and see if they will replace it.
Thanks for the suggestion. SanDisk is good about warranties. I had a USB Dual Micro 128gb stick they replaced when it fell apart. Recently it faulted write protect only, and they offered to replace it again, but I can't wipe it because it is read only, and it has tax return data on the stick. It's only $35ish bucks, so I'm not sure I'll send it for replacement. I was thinking later this year of upgrading from 400gb to 512gb, I may wait until then.
so If I want to get serious about running linux on the s4 I probably should upgrade to a 256gb
model
The higher-speed reads are from a "cached read" which says more about the cache speed than the internal flash speed. In Android parlance, the "Internal SD Card" is the storage partition of the internal flash, which is slower, because it's reading the flash speed, not the cache speed. The physical SD card will be listed as "External SD Card", you would need to read that, not cached, to see how they compare. There are many microSD cards available with higher speeds than the internal storage in the screenshot, so if the SD card reader on the phone can keep up with them, external SD cards may be faster at sequential reads and writes.
It isn't shown in the screenshot, but random reads and writes mater more under some use cases. The SD card will likely have much lower random read and write speed, because of the extra latency in the SD card interface.
In the screen capture, the card I have circled as the Sandisk Ultra is in fact a physical card inserted in the Tab, why on that particular benchmark is says "internal" is unknown. The Sandisk card, while not the fastest isn't bad on read for an SD card as it reads close to 100mbs when tested on my PC but is nowhere near as fast as the real internal memory, cached or not.