Which uses more power? DVD or HD?

Discussion in 'MacBook Pro' started by Monobas, Mar 18, 2009.

  1. Monobas macrumors newbie

    Joined:
    Dec 11, 2008
    Location:
    Brighton, UK
    #1
    On a late 2007 MacBook Pro 17"

    Does it take more battery power to watch a movie as a DVD disk or as a ripped disk image played direct from the HD?

    My instinct tells me the DVD will be more power hungry but I don't trust my instincts on this kind of thing! :D

    Thanks

    Monobas
     
  2. Sneakz macrumors 65816

    Sneakz

    Joined:
    Jul 17, 2008
    Location:
    Toronto, Ontario, Canada
    #2
    DVD uses more power
     
  3. GoCubsGo macrumors Nehalem

    GoCubsGo

    Joined:
    Feb 19, 2005
    #3
    Your instincts are correct. It takes more power to run the optical drive during an entire movie than it does to read from the standard hard drive. I say standard because people will upgrade their drives to something faster whereby they directly effect their battery life. Even still, a faster drive will most likely use less battery power than an optical drive. If I am wrong then I am wrong. ;)
     
  4. felt. macrumors 6502a

    Joined:
    Mar 13, 2008
    Location:
    Canada
  5. Salavat23 macrumors 6502

    Joined:
    Feb 7, 2008
    #5
    I would assume that the DVD uses less power.

    It does not need to spin as fast, and the disk is lighter compared to the magnetic disk in the HD, so less power is needed to rotate it.
     
  6. RKpro macrumors 6502

    Joined:
    Oct 27, 2008
    #6
    Optical drives use a shitton of energy, and they're louder and they vibrate. And also, even when you watch DVDs, the hard drive is still consuming some energy anyway.
     
  7. pyromaniaque macrumors 6502

    Joined:
    Nov 16, 2008
    Location:
    Well..Ask your mother.
    #7
    Plus, it takes more power to have optical on , because no matter what your HD WILL BE ON. so thats two things sucking up power
     

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