5400RPM vs 7200RPM over FireWire 800

Discussion in 'Mac Accessories' started by ignas2526, Sep 22, 2010.

  1. ignas2526 macrumors newbie

    Joined:
    Sep 22, 2010
    #1
    Do 5400RPM HD allows maximum speed over FireWire 800, or 7200RPM HD will be faster?
    Basically 7200RPM makes difference in speed if you using FireWire 800 or not?
     
  2. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #2
    2.5" S-ATA HDDS with 5400RPM can deliver up to 75-80 MB/s, 2.5" S-ATA HDDS with 7200RPM can get up to 95-105 MB/s, Firewire 800 can get up to 75MB/s, but stays more around 65MB/s, thus my conclusion, that a 5400RPM HDD will be okay with FW800.

    Or are you talking about 3.5" HDDs?

    Btw, the bigger the HDD capacity on small HDDs, the faster they are, as a 320GB 2.5" HDD with 5400RPM isn't as dense as a 500GB or 750GB 2.5" HDD with 5400RPM.
     
  3. mpe macrumors regular

    Joined:
    Sep 3, 2010
    #3
    The primary advantage of faster spinning HDD is lower head seek time thanks to lower rotational latency. Therefore for certain workloads (accessing small files) it makes sense to use the faster disk even on slower interface. The interface speed may limit the maximum sustained speed (like when transferring large files from and to disk of its bufferr).
     
  4. ignas2526 thread starter macrumors newbie

    Joined:
    Sep 22, 2010
    #4
    So this means what in most cases there will be no difference in transfer speed between 7200RPM and 5400RPM via FireWire800...
     

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