64gb microsdxc card coming for SGPGeneral


  1. Ceramic7

    Ceramic7 Member

    I recently ordered the card for $80 and when it arrives, planned to format it to FAT32 so I can use it in my SGP 5.0. After I ordered it, I see that the price for the card on Amazon has gone down alot since I last checked. Now, I'm not sure if I should just return the card and then wait for a few months to see if the price goes down even more.

    The photo of the card has a "I" next to the sdxc. Does anyone know what this means? I heard that in the future, sdxc cards will be made differently and with more pins. When that happens, the cards will not work in slots made for sdhc cards even with formatting to FAT32.

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  2. marcelf

    marcelf Well-Known Member

    found this

    With new SD cards coming out regularly and new features being added, there's got to be a way to keep track of what's what. It's especially important once your card is out of the packaging. It's frustrating to look at a pair of cards and try to figure out which one's got the nice high transfer speeds.
    Two new symbols have been introduced by the SD association to clear up the confusion.
    Cards with an Ultra High Speed (UHS) rate of transfer will be marked with the USH-I symbol, which is simply a capital I located on the right side of the card next to the letters HC or XC. This symbol designates the card as capable of transfer rates of up to 104MB a second.
    The other symbol, which designates Speed Class 1, marks cards that are intended for real time high definition video recording. The marker for this is a number 1 inside of a U, also on the right side of the card, but next to the letters SD.

    marcel

    [​IMG]
    Ceramic7 likes this.
  3. Ceramic7

    Ceramic7 Member

    Thanks for the explanation, marcel.

    So does this mean that the Sandisk card is made following the SD Associations spec 4.0 and not 3.0?


    From Wiki:

    "SDHC host devices will accept SDXC cards that follow Version 3.0, since the interface is identical,[3] but the following issues may affect usability:

    *SDXC cards are pre-formatted with Microsoft's proprietary and patented exFAT file system, which the host device might not support. Since Microsoft does not publish the specifications of exFAT and its use requires a non-free license, many alternative or older operating systems do not support exFAT for technical or legal reasons. The use of exFAT on some SDXC cards may render SDXC unsuitable as a universal exchange medium, as an SDXC card that uses exFAT would not be usable in all host devices. Since the FAT32 file system supports volumes up to the SDXC's maximum theoretical capacity of 2 TB as well, a user could reformat an SDXC card to use FAT32 for greater portability between computers (see below). FAT32-formatted SDXC cards can be used in a host device built for SDHC if the host device can handle 64GB and larger volumes.

    *SDHC host devices will not test the new capability bits defined for SDXC 4.0 cards. It will therefore not be able to use the new features of SDXC, such as transfer speeds above UHS104 (104MB/s)."


    The meaning that I'm getting from the last paragraph is that the Sandisk card I ordered is a SDXC 4.0 and, so, I will not be able to use it in a sdhc card slot. Is that right?
  4. marcelf

    marcelf Well-Known Member

    as far as I'm aware, the galaxy player will only work with cards up to 32GB, or SDHC cards (which it quotes on it's website). I'm not sure SDXC will work in the device.
    I know that SD and SDHC cards have the same contacts, but SDHC cards don't work in an SD card reader.
    I'm pretty certain that SDXC will have the same problem in SDHC devices.
    I know that from cameras (which I sell) the camera must be enabled to read SDXC cards. You can format it to any format you want, but it's the device you use it in that still has to be able to read it. If it's beyond the capacity of the device it will not register, show card error, or show no card in device.

    Let us know if it works though!

    marcel
  5. Sideman

    Sideman Well-Known Member

    I read up on these on the xda forum. They WILL work in most android devices, but when inserted they will give an error message saying they are not compatible. They just need to be formatted with FAT32.

    So, insert the new card into your SGP, select reformat (FAT32 only). Once done, your SGP will recognize the full 64gbs (actually slightly less due to allocation table created). Tests confirmed that the entire formatted card IS readable and writable.

    Here's a link to the xda forum...
    [REVIEW & VIDEO] 64GB micro SDXC cards - working in SGSII, HTC Sensation, SGSI - xda-developers
    Ceramic7 likes this.
  6. Ceramic7

    Ceramic7 Member



    My card came yesterday and I can confirm that it works in the SGP 5.0. :) Thanks for the info, Sideman. Storage space reads as 59.46gb.

    I connected my SGP to my Win XP computer and it can read the 64gb card just fine. The card acts like a SDHC one as far as I can tell. I've only put in a handful of albums and videos and moved an app from the device storage to the card so far. Transfering from a PC seems slow with the card in the SGP. I'm going to try loading the card with my card reader (not made to read SDXC cards). That should work also since a poster in another forum confirmed that it'll work in non-SDXC card readers.
  7. Sideman

    Sideman Well-Known Member

    That's good to hear, Ceramic7. I plan to buy one as soon as I can save up a little coin. My 32gb card is fine for now. It's still got plenty of room.

    The xc cards run at about class 6 speeds in our current android devices, but if the design specs are implemented in the device it runs blazing fast...I forget the speed rating at the moment, but it's scary fast! :D
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