Battery life drop when using 7200RPM drive in MBP

Discussion in 'MacBook Pro' started by gumbyx84, Jan 20, 2009.

  1. gumbyx84 macrumors 6502

    gumbyx84

    Joined:
    Dec 7, 2008
    #1
    Hey all. I am currently looking into getting a new HD for my MBP. One thing I have been questioning is if I should get a 5400 or 7200 RPM drive. I know 7200 RPM can give me a performance boost (small, but noticeable) but I worry about the extra power drain said drive would cause. Has anyone here upgraded to a 7200 RPM drive in a Mid-2008 MBP and, if so, how is your battery life. Currently I am at 98-99% charge level, which lasts about 5 hours with Wifi off and 3-4 with it on.

    Thanks ahead of time for your input.
     
  2. dr. shdw macrumors 6502a

    Joined:
    Aug 27, 2008
    #2
    I get 2 hrs with heavy use..
     
  3. iShater macrumors 604

    iShater

    Joined:
    Aug 13, 2002
    Location:
    Chicagoland
    #3
    I believe barefeats.com has some comparisons of battery life of such drives.

    It depends on the drive:

    link1 read the power section.

    And dig around there.
     
  4. hellchicken macrumors newbie

    Joined:
    Dec 30, 2008
    #4
    I bought my new MBP with a 7200 RPM HD. I don't have it optimized for power savings and I get about 3 hours on it. Hope this helps.
     
  5. tecknical macrumors regular

    Joined:
    Jul 23, 2008
    #5
    it all depends on the hard drive and the power consumption. my 5400 rpm takes 1.8W for read/write and .55 idle

    a 7200RPM WD takes 2.1 for read write and i think .7 for idle, so battery life would be affected
     
  6. kastenbrust macrumors 68030

    kastenbrust

    Joined:
    Dec 26, 2008
    Location:
    North Korea
    #6
    Upgrading from a 5400RPM drive to a 7200RPM drive will actually extend your battery life if you use a good quality brand for the upgrade, i'm not going to explain the science why but if you really want I will.

    In the link iShater wrote above it proves my point.
     

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