2009 Mac Mini SATA speed Puzzle

Discussion in 'Mac mini' started by Richard8655, Feb 11, 2017.

  1. Richard8655, Feb 11, 2017
    Last edited: Feb 11, 2017

    Richard8655 macrumors 6502

    Joined:
    Mar 11, 2009
    Location:
    Chicago suburbs
    #1
    Before recently deciding to upgrade my early 2009 Mac Mini with an SSD, I noticed the original HD was only negotiating data transfer speed at 1.5Gbps even though this Mini is capable of 3Gbps.

    How could the original equipment be running at SATA I level on a SATA II machine? Can the HD deteriorate over the years? Or latest El Capitan update? Or maybe it always was that way (I had never checked before).
     
  2. phairphan macrumors 6502a

    phairphan

    Joined:
    Sep 21, 2005
    Location:
    Reject Beach
    #2
    I recall this being a well-known issue with the chipset on this machine. It's possible to negotiate at SATA II, but you will only get it with a very limited set of hardware. As for the original HD, it probably didn't matter if it negotiated at I or II. I don't believe a 2.5", 5400 RPM drive from 2009 could saturate a SATA I bus.
     
  3. Richard8655, Feb 11, 2017
    Last edited: Feb 11, 2017

    Richard8655 thread starter macrumors 6502

    Joined:
    Mar 11, 2009
    Location:
    Chicago suburbs
    #3
    Thanks. I think I read on this forum someone with a 2009 also complained about this issue. I hope my new SSD that's on its way will run at SATA II on this machine (after all these years).
     
  4. Maxx Power macrumors 6502a

    Maxx Power

    Joined:
    Apr 29, 2003
    #4
    Also check the SATA specifications of your particular HDD. HDDs circa late 2000s had either firmware or jumper options to set them to SATA I speeds for compatibility. I have seen this option used many times. In the case of the Mac, I am not sure what it may have been used for, if it was indeed used.
     
  5. Richard8655 thread starter macrumors 6502

    Joined:
    Mar 11, 2009
    Location:
    Chicago suburbs
    #5
    I read your comments on another thread and agree the Cricial M500 is probably the safest bet with MCP79 and 2009 Minis. I was going to try Kingston UV400 but not sure of guaranteed compatibility.
     

Share This Page