3DS SD compatibility chart for CFW

Discussion in '3DS - Flashcards & Custom Firmwares' started by taggart6, Jun 5, 2016.

  1. taggart6
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    taggart6 GBAtemp Fan

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    I've noticed that my sandisk 64gb class 10 sd card is 20x slower then my PNY 64gb class 10 card in my n3ds with a9lh running Luma3ds on sysnand

    Reformatting and sector repairs did nothing to resolve this. My guess is that some sd cards muct be inherently more 3ds friendly

    Is that any online resource showing compatibility information? If not, would people care to post there personal experiences?
     
  2. Rasa39

    Rasa39 GBAtemp Regular

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    Nintendo recommend you use SanDisk SD cards. I was tempted to buy one but you'll always be limited by Nintendo's servers and install methods for stuff like downloading games etc.
    Having not used a Sandisk card I'm surprised to here yours is running slow.

    I don't think there's any kind of compatibility guide, but people have reported (in several threads) that buying a higher quality/more expensive card didn't really give them that noticeable a difference in performance. (the mSD reader is probably only 2.0)

    Do you lag on the home menu and stuff, or is it just slow downloads and transfer speeds? I have a Qumox 64GB mSD, which works great considering it's price and how unfamiliar the brand is. Installing my games from the eshop or from cia still runs very slowly, but I noticed that when I use my ticket.db and download from the homebrew freeshop I get much higher speeds.

    Also this may be a given but did you format each card with the same cluster size and on a full format? Not sure if that would do anything for you though, but there's no harm checking.
     
  3. taggart6
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    taggart6 GBAtemp Fan

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    No lag int eh operations, but writes to the sandiisk card are horrible. no idea whats going on unless its physically damaged some how
     
  4. Ericjwg

    Ericjwg Good

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    3ds has a really limited i/o speed on the sd slot
     
  5. taggart6
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    taggart6 GBAtemp Fan

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    Nahh, this is even for writes using my PC's internal sd reader. I get 50mb on most other class 10 chips.
     
  6. Lilith Valentine

    Lilith Valentine GBATemp's Wolfdog™ I drool on my knife

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    Between insane and insecure
    Did you try reformatting with emunand9? Mine was running slow and using that actually sped it up.
     
  7. Ericjwg

    Ericjwg Good

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    what????? you got 50megabytes/s writing speed on c10 card???:ninja:
     
  8. GamerDudeK

    GamerDudeK GBAtemp Regular

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    I use a 32gb class 10 Sandisk one and it works extremely well in my N3DSXL.
    I also get around 65mb/s when writing to it using my pc
     
  9. Ericjwg

    Ericjwg Good

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    waht???????? which card reader you're using???????
     
  10. mokmoki

    mokmoki Advanced Member

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    i have one Sandisk Ultra 64gb mSD card that has slow writes as well. but my other Sandisk cards write quicker. i'm thinking i just pulled a bad one from the bunch. so i just ordered a Samsung Evo+ and put NDS roms on my slow Sandisk. (64gb is way too overkill though for DS roms).
     
  11. GamerDudeK

    GamerDudeK GBAtemp Regular

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    @Ericjwg
    An Anker USB 3.0 SD/Micro SD card reader
     
  12. Ericjwg

    Ericjwg Good

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    looking this one on amazon right now:D, thanks!!!!

    — Posts automatically merged - Please don't double post! —

    the 15.99 one?
    Warning: Spoilers inside!
     
  13. taggart6
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    taggart6 GBAtemp Fan

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    Ahh no...on the read. The write was at 5 to 11 most of the time bit I've gotten 20 as well. It's an internal sd reader but into my work laptop.
     
    Last edited by taggart6, Jun 6, 2016
  14. Sonic Angel Knight

    Sonic Angel Knight GBAtemp Guru

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  15. hunter010709

    hunter010709 Advanced Member

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    Megabyte (MB) and a Megabit (Mb). Mb being 1/8 of MB, so 1MB takes 8 seconds if the speed 1mb/s.
    [​IMG]

    From memory the class of an 03ds sd slot is 4, n3ds sd slot is 10 (no uhs). That is your limit on the 3ds device regardless of the sd being higher, however copying files from a pc to the card i.e large cia's will be faster if the pc has the capability.
     
    Last edited by hunter010709, Jun 6, 2016
  16. trinhno

    trinhno GBAtemp Regular

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    Class 10 SD cards by standard only need to sustain 10MBytes/s writes.
    SanDisk Ultra 48MB/s, their lowest class 10 cards usually have ~15MBytes/s writes. I have a golden sample with ~40MB/s writes, but that's hard to come by.

    More expensive cards, even Sandisk ones will have better speeds. It'll help you with installation and a bit of boot speed.