No Optical DD in Retina MBP, good decision!

Discussion in 'MacBook Pro' started by PracticalMac, Jun 12, 2012.

  1. PracticalMac, Jun 12, 2012
    Last edited: Jun 12, 2012

    PracticalMac macrumors 68030

    PracticalMac

    Joined:
    Jan 22, 2009
    Location:
    Houston, TX
    #1
    Unlike my threat blasting Apple for not including Ethernet, removing the ODD is a great choice, with one caveat.

    I hardly use a CD or DVD anymore (everything online), far less then I use the Ethernet on my MBP (which is often). Gladly remove it for a more battery (or use the 2ed HDD mounting kit!).


    The one caveat: I would like to see a Thunderbolt eternal optical drive.
    Yes, I know, the USB2 "Super Drive", but that drive is a kludge, needs 1Amp power (0.5 Amp is specification, most USB hubs can't use), must be directly connect (Apple change that?), and USB2 is a bottleneck compared to how fast ODD can be.
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    ODDs offer speeds faster than 36 MB/s? Even those slim ones?
     
  3. PracticalMac thread starter macrumors 68030

    PracticalMac

    Joined:
    Jan 22, 2009
    Location:
    Houston, TX
    #3
    USB bandwidth is shared among all devices on that channel. More devices will reduce the throughput. CD (36 MB/s, 288 Mb/s) should be OK, but Blu-ray disc needs about 54MBps (432 Mb/s) which will likely exceed the streaming capability of USB2

    USB3 works too, but TB is cooler. :cool:
     
  4. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #4
    I think you got your MB and Mb confused. If Blu-Rays would need 54 MB/s (MegaByte per second) one 90 minute film would be close to 300 GB, not even HD editing codecs like ProRes and DNxHD offer such a bit-rate.
     

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