HDD Write Speed

Discussion in 'MacBook Pro' started by saberahul, Aug 7, 2012.

  1. saberahul macrumors 68040

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    #1
    For the i7 in my signature, what is the hdd write speed? I am wondering if I should buy the thunderbolt cable for faster transfers between my 2 macs but if the write speed is no where as close to 1.25GBps, then I see no point in buying it. Can someone clear this for me?
     
  2. simsaladimbamba

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    #2
    80 to 100 MB/s. A Gigabit Ethernet (Cat 5e, Cat 6) cable will suffice for fast transfer between those two.

    You can use the following applications to benchmark the speed of your HDDs:
     
  3. geoffreak macrumors 68020

    geoffreak

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    Feb 8, 2008
    #3
    HDDs get no more than about 70MB/s read and about 50MB/s write from what I've seen (especially the ones Apple puts in their laptops). At those speeds, you can't even max out USB 2.0, let alone Thunderbolt.
     
  4. simsaladimbamba

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    #4
    2.5" S-ATA HDDs spinning at 5.400 RPM can easily reach 70 to 80 MB/s read AND write speeds. 2.5" S-ATA HDDs spinning at 7.200 TPM can reach up to 100 MB/s.
    USB 2.0 will peak at 37 to 38 MB/s, Firewire 800 will get you 60 to 70 MB/s.

    PS: I have several 2.5" S-ATA HDDs, one even is a 7.200 RPM one (Momentus 7200.4), and I have tested them via e-SATA to get those numbers.

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  5. geoffreak macrumors 68020

    geoffreak

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    Feb 8, 2008
    #5
    I suppose the USB comparison was a bit of an exaggeration, but the point still stands that Thunderbolt is overkill.
     
  6. simsaladimbamba

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    #6
    That I agree with, thus my recommendation for Gigabit Ethernet.
     
  7. saberahul thread starter macrumors 68040

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