Battery life drop when using 7200RPM drive in MBP

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

  1. gumbyx84 macrumors 6502


    Dec 7, 2008
    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

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


    Aug 13, 2002
    I believe 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

    Dec 30, 2008
    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

    Jul 23, 2008
    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


    Dec 26, 2008
    North Korea
    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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