Optibay HDD that doesnt affect battery life

Discussion in 'MacBook Pro' started by matrix808, May 8, 2011.

  1. matrix808 macrumors regular

    Jun 7, 2010
    I was wondering what is the best option HDD to use in my optibay to not see a significant decrease in battery life.

    Currently im running the WD 750 GB 7200 RPM scropio black in my optibay. For the most part im fairly happy with it but ive lost about an hour half of battery life when its installed. I'm not too worried about having a SMS built in since i mainly use my laptop on a desk.
  2. altecXP macrumors 65816

    Aug 3, 2009
    Hitachi has some good low power drives. Also a WesternDigital Blue.
  3. matrix808 thread starter macrumors regular

    Jun 7, 2010
    does the WD blue really consume less power? was on OWC site and when looking at the specs it seems the blue uses more power than the black
  4. calaverasgrande macrumors 65816


    Oct 18, 2010
    Brooklyn, New York.
    I'm going with the seagate momentus 750gb for the optibay drive and next paychek I'm picking up an SSD for the boot drive. I figure either the Vertex 3 or Intel 510. If I get the Intel I wont be able to resist naming the volume "Datsun".
    I am hoping that using the SSD for my boot will save me enough power that having a 2nd HDD wont be a battery killer (or not as bad).
    Either way n worries on my part. My previous laptop had 2-3 hour battery life!
  5. kdoug macrumors 6502a


    Jun 2, 2010
    Iowa City, IA USA
    As a previous poster pointed out. Hitachi have the lowest power requirements of any HD. It's one of the reasons Apple uses them almost exclusively.
  6. matrix808 thread starter macrumors regular

    Jun 7, 2010
    Is there a significant decrease in battery life with a 7200 rpm drive installed over a 5400 rpm?
  7. matrix808 thread starter macrumors regular

    Jun 7, 2010
    What is the main factor that affects battery usage? the scorpio black seems to have the lowest power consumption rated at (.83 watts), or should i be more concerned about the "seek" power?
  8. alust2013 macrumors 601


    Feb 6, 2010
    On the fence
    Not really, but then again, there's not much point having 7200 RPM in the optibay, as anything that needs to be accessed quickly will be on the SSD. I'd go Scorpio blue 750GB (if you need a lot of storage)
  9. dusk007 macrumors 68040


    Dec 5, 2009
    Idle power is the only thing that really matters. As always when it is active the CPU power consumption jumps by so much that the HDD/SDD becomes insignificant anyway. But at idle it matters.
    The Vertex 3 and Intel 510 are both worse in idle power than most decent 2.5" hdds btw. Therefore your won't save anything with a SSD that might help with overall consumption if there is a HDD running too.
    You can rely on the HDD auto spindown which doesn't seem to work for some in the optibays or you go the manual route and use some script to mount/unmount the drive whenever you need it or not. Unmounted the drive should spin down and suck only very minimal power.
    With the HDD off you will be at about the same or a little worse than with only one hdd.
  10. DarkFlame macrumors regular

    Dec 21, 2007
    I'm in this boat and it sucks! I bought a 120gb Vertex 3 SSD and threw the OEM HDD in the optibay. My battery life sucks, I wonder how much spinning down my HDD will help w/ battery life/consumption.
  11. ApplePu macrumors regular

    Apr 3, 2010
    I've got a 120GB Intel 510 Series to install into my 15" MBP 2.2 GHz which should arrive shortly.

    I'm currently asking myself which drive to get for the optibay. I'm having 2 favourites at the moment:

    1. 750GB WD Scorpio Black (good performer)
    2. 750GB Hitachi 5K750 (battery saver)

    What difference in battery life will I see between these two? Is the difference in performance important when using it in the optibay? I'll use it mainly for picture/music/video/documents storage.....
  12. matrix808 thread starter macrumors regular

    Jun 7, 2010
    all i know is under use i seem to have lost about an hour to hour half in battery life with the WD Scorpio Black installed. I havent installed any other HDD yet so I cant verify that the WD is the culprit or the fact that i now have to hard drives in my computer

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