SATA II vs. SATA III

Discussion in 'MacBook Pro' started by ahdickter, Jun 9, 2012.

  1. ahdickter macrumors 6502

    Joined:
    Jun 12, 2011
    Location:
    Pittsburgh, Pennsylvania
    #1
    Is there any noticeable real-world difference between using an SATA II SSD versus an SATA III SSD? I know that SATA III offers increased throughput but is there will the average user be able to tell the difference?
     
  2. JalenMc macrumors newbie

    Joined:
    Jun 6, 2012
    #2
    Well, SATA II is 3Gb/s, and SATA III is 6Gb/s.


    I'll let you decide.
     
  3. iamthedudeman macrumors 65816

    Joined:
    Jul 7, 2007
    #3
    To answer your question, in %99 percent daily usage, no. Say with Sata 2 you open up a program in two seconds, Sata 3 one second. I have a Apple Sata 2 Toshiba SSD in my Macbook pro, and a OWC SSD Sata 3 in the optibay and cannot tell the difference in daily usage.

    If I run a speed test, yes. But most files and applications use 4k blocks random reads that take seconds to open. Most daily tasks are random reads. Reading random reads takes a second or a few seconds. The difference between the two is nil.
     
  4. PAPO macrumors 6502

    Joined:
    Aug 24, 2009
    Location:
    Australia
    #4
    it depends on the drive, some HDD's still don't saturate SATA II but with a good fast SSD you should see a difference, at least sometimes
     
  5. flatfoot macrumors 65816

    Joined:
    Aug 11, 2009
    #5
    If your MacBook only has a 1.5GBit/s connection, there is no difference because both SATA 2 and SATA 3 SSDs will be throttled.
     
  6. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
    #6
    I post this in every thread:

    You can certainly tell the difference between a regular HDD and a SSD. If you look at benchmarks, you'll see that SATA III SSDs are a lot faster than SATA II SSDs. From day-to-day use, it's unlikely you will be able to tell the difference.
     

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