iPad What type of NAND flash is in the iPads

Discussion in 'iPad' started by Meister, May 13, 2014.

  1. Meister Suspended

    Meister

    Joined:
    Oct 10, 2013
    #1
    What type of NAND flash is used in the different history versions of the iPad and what is the speed of those?

    I have to apologize for asking this here, but I used google and the forum search and could find no answer.
     
  2. Night Spring macrumors G5

    Night Spring

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    Jul 17, 2008
  3. Meister thread starter Suspended

    Meister

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    Oct 10, 2013
    #3
    Thx! Good idea. I found the type (Samsung K9LCG08U1M 8 GB NAND flash).
    Now is there any info on the read and write speed?
     
  4. Night Spring macrumors G5

    Night Spring

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    #4
    Hmmmm. try anandtech's reviews. They do all sorts of tests, so maybe they have tests on read/write speed.
     
  5. Rodster macrumors 68040

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    May 15, 2007
    #5
    I had asked the same question when I got my iPad 2. The first and second gen iPad's used Samsung NAND almost exclusively and with the iPad 3 Apple began to use Toshiba NAND. Samsung NAND was generally the preferred choice because it typically had more write cycles and was pretty fast. Toshiba now makes really good NAND modules as well.
     
  6. Meister thread starter Suspended

    Meister

    Joined:
    Oct 10, 2013
    #6
    Thx for the input so far!
    I find it hard to believe that there isnt any app like blackmagicspeedtest that would run in ios.

    I can find no speedtest performed by anyone :confused:

    All I could find was for the MT29F2G08A running at 27mbs read and 8mbps write.

    Is the flash storage in the ipad really that slow?
     
  7. Night Spring macrumors G5

    Night Spring

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    #7
    No idea, but just curious, what do you want to do on the iPad that read/write speed matters?
     
  8. Meister thread starter Suspended

    Meister

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    Oct 10, 2013
    #8
    Different reasons. Thinking about getting a new ipad and I am trying to ascertain how potent it will be.
    Also strong curiosity. I am buffeled that noone seems to check the storage speed, while people obsese about ssd speeds.
     
  9. Night Spring macrumors G5

    Night Spring

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    Jul 17, 2008
    #9
    Well, I've owned iPads 1, 2, 3, original mini and the Air, and never once did I feel like I needed the speed of the storage to be faster. It's not like a computer drive, where I'm often transferring gigabytes of files from one disk to another. The most workout I give the iPad storage is when I transfer movies onto the iPad, and then the bottleneck is the USB 2 connection.
     
  10. Meister, May 13, 2014
    Last edited: May 13, 2014

    Meister thread starter Suspended

    Meister

    Joined:
    Oct 10, 2013
    #10
    the ipads only have 256mb, 512mb and 1024mb ram. If swapp is used, fast flash storage should work wonders.
    People are concerned about these things on macbooks. Even folks how only do minor tasks. :rolleyes:

    I really crave a fast ipad, for media work, for multitasking and even word processing with large image files.
    I use my ipads as laptop replacements to a large degree.
    Ipads still seem to lag there.

    I also advice people on their computer usage and needs. It helps to know those things.

    We all think that iPads will eventually replace computers.
     
  11. rui no onna macrumors 601

    rui no onna

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    Oct 25, 2013
    #11
    That's because on modern computers, the bottleneck is the storage subsystem. When it comes to the iPad, the bottleneck is still mostly the CPU. Having said that, I can definitely see why storage speed might be a cause for concern. The lack of storage performance is particularly apparent on the Nexus 7. The Nexus practically slows to a halt when apps are being installed/updated, something I haven't seen on the iPad. Sure, it slows down a smidge but not to the point that you can't even check your email or browse the net.

    Also, don't be so hung up on large block sequential speeds. For OS, it's generally small block random that matters and from my experience with the various iterations of the iPad, the NAND used tends to fit well performance-wise with available processing power.
     
  12. alphaod macrumors Core

    alphaod

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    NYC
    #12
    iOS doesn't support swap files.
     
  13. mangomind macrumors 6502a

    mangomind

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    Mar 15, 2012
    #13
    Yes, the flash storage is that slow. It is much slower than hard drives and SSDs. This is also the reason why iOS has no swap file.
     
  14. sammich macrumors 601

    sammich

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    Sarcasmville.
    #14
    AnandTech's Android phone and tablet reviews these days seem to include a NAND storage benchmark as well. At least for the popular devices.

    And yes, no dynamic paging on iOS.

    When I'm restoring the media onto a restored device it usually flies along at least 20MB/s. At least, that was I remember it to be. These are sequential writes of large blocks so it's pretty easy to sustain on NAND.
     
  15. mangomind macrumors 6502a

    mangomind

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    Mar 15, 2012
    #15
    Yes, the NAND storage used in most phone and tablets has around 15-20 MB/s sequential write speed. Enabling a paging file would be worse than keeping it without one. But SSDs with 300 MB/s sequential write handle swap files well.
     

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