Replacing 320hd 7200rpm with 1tb 5900rpm, will I notice a differnece in speed?

Discussion in 'iMac' started by ixi, Nov 26, 2009.

  1. ixi macrumors newbie

    Joined:
    Jun 7, 2008
    #1
    Like the title says, I have a 2.4ghz 20" iMac and just bought a 1tb seagate hd rated at 5900 rpms. My hd right now is a 320gb at 7200 rpms. Will I see a big difference in speed? Should I just put the new 1tb in a case and use it as an external drive? Thanks for any info.
     
  2. Sun Baked macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #2
    Stick the bigger drive inside...

    The 1-10 sec you might save in a day loading a file with a lot of random access fragments, might not outweigh all the time you spend moving files back and forth in order to manage the cramped internal drive.
     
  3. J&JPolangin macrumors 68030

    Joined:
    Jul 5, 2008
    Location:
    Thule GL @ the TOW
    #3
    I'd partition the 1 TB drive and use it for your main iTunes access and a TM back up for the other partition... that way you don't have to worry about taking your iMac apart and dust under the screen...
     
  4. Warbitrary macrumors regular

    Joined:
    Nov 24, 2009
    Location:
    Montréal, Canada
    #4
    It might run at the same speed or faster, if you don't fill it up too much. Detailed info:
    http://macperformanceguide.com/Storage-WhyYouNeedMoreThanYouNeed.html

    Putting a Time Machine backup on the same drive defeats the very purpose of a backup. If the drive fails, you've lost all your data.
     
  5. jonwd7 macrumors member

    Joined:
    Nov 19, 2009
    #5
    It should still run much faster.

    RPMs: 5900/7200 = 81.9% the RPMs

    Platter density: Now, if you got the 7200.12 1TB model, it fits 1TB onto only TWO platters, for 500GB/platter. I can only speculate about the # of platters in your old hard drive (depending on the age), so I'll give a few cases...

    500/320 (1-platter 320GB drive): 156.25% the density
    500/160 (2-platter 320GB drive): 312.50% the density
    …and so on…

    So at best it may still be nearly 30% faster over sustained speeds. Randoms will of course rely on access times and what not and may not be that much better.
     
  6. justaregularjoe macrumors 6502

    Joined:
    Nov 28, 2008
    #6
    I don't get it. Why can you not just pick up a 7.2k 1TB?
    They definately aren't rare, nor expensive for that matter. WD makes a 2TB Caviar Black.

    :confused:
     
  7. Outrigger macrumors 68000

    Outrigger

    Joined:
    Dec 22, 2008
    #7
    FYI, there is no such thing as a 5900rpm drive, its 5700.
     
  8. Mars478 macrumors 6502a

    Mars478

    Joined:
    Mar 6, 2008
    Location:
    NYC, NY
    #8
    No 5400RPM.
    I upgraded from a 5400RPM 160GB in my MSI Wind running 10.6.2 to a 7200RPM 320GB and the difference was amazing. It's so much faster.
    But it was 10$ more than a 500GB 5400RPM Drive. IT's a choice, speed or space.
     
  9. ftaok macrumors 601

    ftaok

    Joined:
    Jan 23, 2002
    Location:
    East Coast
    #9

    I thought the same thing too when I saw this drive at Newegg last week. I thought it was a typo.

    Apparently, Seagate has a whole bunch of 5900 RPM drives. Here's the LINK - Barracuda LP.
     
  10. J&JPolangin macrumors 68030

    Joined:
    Jul 5, 2008
    Location:
    Thule GL @ the TOW
    #10
    ...also WD is being secretive about the speeds of their "green" drives... they are between 5900 - 7200 RPM and the specs aren't easy to find info beyond that...
     

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