2009 mac pro 8 core upgrade to 12 kernel panic

Discussion in 'Mac Pro' started by jfcates, May 7, 2018.

  1. jfcates macrumors newbie

    jfcates

    Joined:
    Dec 6, 2005
    Location:
    Maryland, USA
    #1
    2009 firmware updated to 2010. Delided w3670 xeons to upgraded 8 core to 12 core. Each new cpu will boot up in cpu A with fast fan, but when either one installed in cpu A and B I get a kernel panic.

    kernelPanic.jpg

    Suggestions please.
     
  2. Naimfan Suspended

    Naimfan

    Joined:
    Jan 15, 2003
    #2
    I may be wrong, but you need "X" Xeons for paired use. "W" processors will not work.

    So you need a pair of X5680 or X5690s to work (or 5650, etc).
     
  3. jfcates thread starter macrumors newbie

    jfcates

    Joined:
    Dec 6, 2005
    Location:
    Maryland, USA
    #3
    OMG :( I hope your are wrong, but if you're right = what a BIG dumb mistake. Can anyone else "chime" in on this please?
     
  4. skizzo macrumors regular

    Joined:
    Apr 11, 2018
    #4
    Ouch because I have never done a delid process but sounds like a bit of a pain in the arse! Yea you delid on CPUs that cannot run in a dual CPU system. So that work was in vain. Unfortunately this looks like an important detail you missed. Give this thread a real good look over on the whole topic. You need two CPUs that have "Dual Xeon" capability. W3670 is just "Xeon" so only works in a single CPU system

    https://forums.macrumors.com/threads/mac-pro-cpu-compatibility-list.1954766/
     
  5. h9826790 macrumors G4

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #5
    You are definitely using the wrong CPU
     
  6. abdyfranco macrumors regular

    abdyfranco

    Joined:
    Dec 4, 2017
    #6
    "W" CPUs do not work on dual CPU systems, you need "X" type CPUs.
     
  7. jfcates thread starter macrumors newbie

    jfcates

    Joined:
    Dec 6, 2005
    Location:
    Maryland, USA
    #7
    Ok! :( Thanks to all who responded. I guess I'll try to sell them on Craigslist; don't know if there's a market for these delided. Worth a shot anyway. At least I know I can delid without a problem, but what an expensive "testing method." I put the the originals back in and booted without issue.
     
  8. flowrider macrumors 603

    flowrider

    Joined:
    Nov 23, 2012
    #8
    I wrote and posted this over 4 years ago:

    Lou
     

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