MacPro3,1 & PC2-6400F

Discussion in 'Mac Pro' started by afberendsen, Sep 6, 2014.

  1. afberendsen, Sep 6, 2014
    Last edited: Sep 6, 2014

    afberendsen macrumors newbie

    Joined:
    Sep 6, 2014
    #1
    Hi there.
    I have a MacPro3,1 with 16GB of PC2-5300F. Yesterday I received my new memory: 32GB PC2-6400F. For my surprise, the Mac stops at the beginning of the start-up, and the front light keeps flashing in regular intervals. What I know so far:

    1. Flashing light implies bad memory
    2. The new memory modules I have ar all 4GB 4RX8 PC2-6400F-555-11-ZZ (4GB, DDR2, 800, CL5, ECC). Those modules where pulled from a working IBM computer (P/N 43X5284 ; FRU:41Y2845).
    3. No combinations of memory module make it work. I followed the patterns from http://manuals.info.apple.com/MANUALS/0/MA430/en_US/MacPro_Early2008_MemoryDIMM_DIY.pdf
    4. EveryMac and AppleSerialNumberInfo, both shows that my mac is a MacPro3,1 (Early 2008) "Eight core 2.8GHz", which should support by spec DDR2 800MHz.
    5. This is the module details (1st page, 1st row): http://smartmconfig.com/ext/ind/docs/ds/SG5127FB212851UUDL.pdf

    Any ideas?
     
  2. nperei macrumors member

    Joined:
    Jun 27, 2010
    #2
    I suggesting you to test 2 pair(2x4GB) once a time. see if boot normal. that way you know you it good pair. then go next one.
     
  3. afberendsen, Sep 6, 2014
    Last edited: Sep 7, 2014

    afberendsen thread starter macrumors newbie

    Joined:
    Sep 6, 2014
    #3
    That's was first action. Same results. Any more ideas?
     
  4. Spacedust macrumors 6502a

    Joined:
    May 24, 2009
  5. afberendsen, Sep 9, 2014
    Last edited: Sep 10, 2014

    afberendsen thread starter macrumors newbie

    Joined:
    Sep 6, 2014
  6. ChaosControl macrumors newbie

    ChaosControl

    Joined:
    Nov 10, 2016
    Location:
    The states
    #6
    That's good to know
    I suspected that but I was never quite SURE

    I always made sure that people ordering from mac titled sales got 2R just to be safe and everything was always fine
    Still very good to know
    Thank you

    PS: Does that apply to 1 comma 1 and 2 comma 1 and 3 comma one?
     

Share This Page