Write speed for Samsung vs Sandisk Microsd card

Discussion in 'Switch - Backup Loaders & Modchips' started by juijui68, Jul 17, 2018.

  1. juijui68
    OP

    juijui68 Member

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    Jun 22, 2018
    United States
    Hi guys,

    I am curious if my microsd card reader is out of date or it's my card has issue?

    I am currently using Samsung Evo Plus 128Gb UHS-I U3 and advertised as up to 90MB/Sec write speed.
    When I am writing .XCI into the microsd card it's only writing at ~20MB/sec and my PC has USB 3.0.

    What is Sandisk A1 .XCI writing speed for you guys? Or this is simply my microsd card reader is out of date?
    Thanks.
     
  2. noahc3

    noahc3 GBAtemp Regular

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    Oct 17, 2015
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    Manitoba
    Just because your PC has USB 3.0 doesn't mean your card reader can take advantage of it. 20MB/s is about USB 2.0 speeds.

    You at least want a USB 3.0 reader, and probably one that is actually advertised with UHS support to achieve advertised speeds.

    Something like this or like this. Make sure to check the reviews.
     
  3. juijui68
    OP

    juijui68 Member

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    Jun 22, 2018
    United States
    Thanks for your reply, could you let me know what is your typical write speed for .XCI? Thanks.
     
  4. noahc3

    noahc3 GBAtemp Regular

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    Oct 17, 2015
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    I get 60MB/s transferring stuff to my 256GB Sandisk Ultra UHS1 card with a generic USB 3.0 reader I grabbed at Princess Auto.
     
  5. zaku

    zaku GBAtemp Regular

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    Jun 26, 2018
    Uganda
    Yeah about 60mb on a usb3.0 reader
     
  6. thaikhoa

    thaikhoa GBAtemp Addict

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    Sep 16, 2008
    Australia
    SS Evo+ / macbook sd slot. I got 85-90MB/s single file and 15-20MB/s small files.
     
  7. zahimi

    zahimi GBAtemp theme maker extraordinarie

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    Nov 5, 2006
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    I have an SD slot in my dell laptop.
    I get 80-90MB/s with my 256GB Samsung evo plus.
    I guess an SD slot is faster then any card reader.
     
  8. subcon959

    subcon959 teh retro

    Member
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    Dec 24, 2008
    Try connecting your card reader to different USB ports and compare the results. Mine seems to be much slower on the front panel ports even though they are supposed to be USB3.0
     
  9. gnilwob

    gnilwob GBAtemp Regular

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    Mar 16, 2008
    Hong Kong
    I can get writing speed of 80MB/s on Samsung and 60MB/s on Sandisk
     
  10. Migoma

    Migoma Advanced Member

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    Mar 12, 2015
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  11. guily6669

    guily6669 GbaTemp is my Drug

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    Jun 3, 2013
    United States
    Doomed Island
    Best is to use a PCI-E port like most laptops have (though some are still under a USB3.0 connection inside). But a good USB3.0 reader will do good too.

    I have a crap USB 2.0 reader and with Sandisk A1 128GB I was getting 18MB\s in the SD port of it and around 20MB\s on the Micro SD port of it, but in my laptop PCI-E it was around 80MB\s, but sadly I already had 3x Sandisk Ultra A1 128GB and they all had problems, now I have a super slow Toshiba crap ;)
     
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