Is 2133Mhz DDR3 or DDR4?

Discussion in 'MacBook Pro' started by Antairez, Nov 10, 2016.

  1. Antairez, Nov 10, 2016
    Last edited: Nov 10, 2016

    Antairez macrumors regular

    Antairez

    Joined:
    Mar 17, 2015
    #1
    Getting mixed information on Apple.com / Notebookcheck.com

    upload_2016-11-11_14-27-56.png

    upload_2016-11-11_14-28-18.png
     
  2. leman macrumors 604

    Joined:
    Oct 14, 2008
    #2
    Its LPDDR3. Why mixed information? The Apple website is very clear.
     
  3. pojo1806 macrumors 68000

    Joined:
    Feb 6, 2013
    Location:
    United Kingdom
    #3
    This ^ the Apple website is correct, why would you need to check on a different website?
     
  4. Wildkraut macrumors 6502

    Joined:
    Nov 8, 2015
    Location:
    Germany
    #4
    The one is LPDDR3 the other DDR4, there is no LPDDR4, yet.
    LP=low power

    The CPU itself supports both, but Apple isn't using DDR4 be cause it consumes more energy.
     
  5. Macintosh IIcx macrumors 6502

    Macintosh IIcx

    Joined:
    Jul 3, 2014
    Location:
    Denmark
    #5
    The Apple website is clear, however the OP touch on something interesting. The Intel CPU's do not officially support LPDDR3 at 2133 Mhz speed, but Apple use that speed anyway.

    Even on the i7 CPU's in the 15", Intel only rate LPDDR3 support at 1866 MHz (but DDR4 at 2133 Mhz).

    So we get ram speed boost on the new MBP's. The speed jump BTW is 33% as we go from 1600 Mhz to 2133 Mhz. I'll take that! :cool:
     
  6. leman macrumors 604

    Joined:
    Oct 14, 2008
    #6
    There is LPDDR4, its just that the Intel CPUs don't support it yet

    True
     
  7. Antairez thread starter macrumors regular

    Antairez

    Joined:
    Mar 17, 2015
    #7
    Since its not officially supported by Intel, are we really getting that number or is it just Apple making numbers up? Will the CPU be fully taking advantages from 2133Mhz RAM?
     
  8. Macintosh IIcx macrumors 6502

    Macintosh IIcx

    Joined:
    Jul 3, 2014
    Location:
    Denmark
    #8
    The ram will work at 2133Mhz, no problem at long as the LPDDR3 is rated at 2133Mhz. It is a fairly novel thing to run the Ram at higher speeds, the overclocking community is doing this all the time, and Apple is in full control over the hardware and bios, so no worry. Just enjoy! :cool:
     
  9. leman macrumors 604

    Joined:
    Oct 14, 2008
    #9
    Benchmarks will show. I can't imagine Apple lying about it. Why would they? And I am sure that they have sufficiently tested this configuration to make sure it works and is stable. I expect slightly higher random access speed and same bandwidths compared to the DDR4 laptops.
     

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