Is new Superdrive USB3 ?

Discussion in 'Mac Accessories' started by Gator Bob, Jun 12, 2012.

  1. Gator Bob macrumors regular

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    Aug 3, 2011
    #1
    Is the apple store Superdrive "for the MacBook pro Retina display" USB3 ... or is it the same old USB 2 superdrive?
     
  2. webstarcool, Jun 13, 2012
    Last edited: Jun 13, 2012

    webstarcool macrumors member

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    #2
    This is a good question. I have been wondering this myself. The USB SuperDrive appears in the list of new products in the online store, so I would suppose it has been upgraded. There is just not any information out there on this.

    What I do know is that the old USB SuperDrive (with USB 2.0) had the product number MC684ZM/A while the new one listed in the Online store has MD564ZM/A. Makes me think that the product is new and therefore supports USB 3.
     
  3. DTphonehome macrumors 68000

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    #3
    The only change I'm aware of is the ability to write DVD audio (DVDA). I haven't heard anything about USB 3.
     
  4. dukebound85 macrumors P6

    dukebound85

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    #4
    It is my understanding that odd cant saturate a usb 2 connection. Could be wrong though
     
  5. marzer macrumors 65816

    marzer

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    #5
    Would be unnecessary. The fastest DVD/CD drives on the market operate at maybe one third of USB 2 theoretical bandwidth of 480Mbps. An 8x Superdrive is at best maybe 80-90Mbps transfer rate.
     
  6. swordfish5736 macrumors 68000

    swordfish5736

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    #6
    i noticed this as well and was wondering if it was showing in the new to the store list because they updated to USB 3 or if it just showed up because they added the retina macbook pro to the list of supported devices
     
  7. anti-microsoft macrumors 68000

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    Edinburgh, Scotland
    #7
    Since it supports the Mac Mini, it's probably USB 2.
     
  8. swordfish5736, Jun 13, 2012
    Last edited: Jun 13, 2012

    swordfish5736 macrumors 68000

    swordfish5736

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    #8
    arent usb 3 devices backwards compatible with usb 2?
     
  9. amarcus macrumors 6502

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    London, UK
    #9
    Yes. I wonder if the new superdrive removes the Mac only restriction - can anyone test this?

    Adam
     
  10. swordfish5736 macrumors 68000

    swordfish5736

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    #10
    The old one(if this one is any different) didn't even work with some macs, since it required the higher powered USB port no?
     
  11. Smartie macrumors regular

    Smartie

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    Apr 25, 2012
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    Stockholm, Sweden
    #11
    Isn't the risk that the only update is the name? Previously it was called MacBook Air SuperDrive, now it is called USB SuperDrive because of RMBP being launched without ODD? This is my guess

    EDIT: read that it also now supports DVD audio.
     
  12. Mr. Retrofire macrumors 601

    Mr. Retrofire

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    #12
    Correct.

    The maximum read speed of many CD readers is 52x, which means 176.400 Byte/s * 52. 176.400 Byte/s is equal to 44.100 sample/s * 2 Byte/sample * 2 channels.

    176.400 Byte * 52 = 9.172.800 Byte

    9.172.800 Byte / (1024 * 1024) = 8.74 MByte/s
    or roughly
    9.172.800 Byte * 8 = 73.382.400 Bit/s = 73.38 MBit/s

    If we assume we can use 240 MBit/s of the 480 MBit/s USB 2.0 bandwith, we can connect
    240.000.000 Bit/s / 73.382.400 Bit/s = 3 USB 2.0 SuperDrives
    to one USB 2.0 port, before we reach a practical limit.

    Not? ;)
     

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