what happens when you use 1.5V ram?

Discussion in 'Mac mini' started by MacOSXuser, Dec 1, 2012.

  1. macrumors regular

    Joined:
    Nov 1, 2007
    Location:
    Toronto
    #1
    will there be any problems or better stick with 1.35v?
     
  2. macrumors 65816

    dasx

    Joined:
    Jun 18, 2012
    Location:
    Barcelona
    #2
    You mean RAM modules which specify they need 1.5V? I'm using them right now with no problems at all and I know a lot of people in these forums are too.

    Even original Apple sticks have 1.5V written on themselves. (Mine at least)
     
  3. Mr. Retrofire, Dec 2, 2012
    Last edited: Dec 2, 2012

    macrumors 601

    Mr. Retrofire

    Joined:
    Mar 2, 2010
    Location:
    www.emiliana.cl
    #3
    Which machine? If you mean the 2.6 GHz i7 Mac mini (Late 2012), the data sheet for the processor says, that the memory controller supports
    - DDR3 RAM (1.5 V)
    - DDR3L RAM (1.35 V)
    and
    - DDR3-RS RAM (1.5 V, Reduced Standby)
    - DDR3L-RS RAM (1.35 V, Reduced Standby)

    See also:
    http://ark.intel.com/products/64891
     
  4. thread starter macrumors regular

    Joined:
    Nov 1, 2007
    Location:
    Toronto
    #4
    so it will be fine to use RAM that are designed for PC? U know some ram says Mac compatible, some don't.

    Yes it is the latest Mac Mini base model 2.5 i5
     
  5. macrumors member

    Joined:
    Nov 23, 2012
  6. macrumors 603

    philipma1957

    Joined:
    Apr 13, 2010
    #6
    mac compatible meant a lot more on non intel macs from 2005 or so. it is pretty much a label designed so that you get charged a bit more. sandy bridge and ivy bridge cpus from 2011 and 2012 macs are very forgiving with ram for the most part.
     
  7. thread starter macrumors regular

    Joined:
    Nov 1, 2007
    Location:
    Toronto
    #7
    thanks! bought 8GB g.skill ram (2x4gb) here in canada
     
  8. macrumors 6502

    Joined:
    Jun 29, 2007
    #8
    FYI, many of the 2012 minis (if not all) come with 1.5V ram as my mid 2012 mini came with 1.5V ram.
     
  9. macrumors member

    Joined:
    May 20, 2008
  10. macrumors 601

    Mr. Retrofire

    Joined:
    Mar 2, 2010
    Location:
    www.emiliana.cl
    #10
    1600 MHz RAM needs more power. 1.5 V RAM needs more power. So if you want a cool and efficient 2012 Mac mini, use DDR3L (1.35 V) RAM, and if possible 1333 MHz RAM.

    Sandy Bridge Mac minis (2011) do not support DDR3L RAM, AFAIK.
     
  11. macrumors member

    Joined:
    May 20, 2008
    #11
    So is there any performance difference though between the 1.35 or 1.5V ram?
     
  12. zen
    macrumors 65816

    Joined:
    Jun 26, 2003
    #12
    No.
     

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