Single CPU Chip in Mac Pro 1.1

Discussion in 'Mac Pro' started by silentsage, Apr 21, 2009.

  1. silentsage macrumors member

    Joined:
    May 13, 2008
    #1
    I have a mac pro 1,1 (2006 model). Does anyone know if it is possible to run his machine using a single CPU chip instead of a two? The new LGA 771 quad core chips (e.g., 5420) have more performance in a single chip that the dual 5150s in this machine. It's pretty expensive to buy two 5450s to maintain the dual-CPU chip configuration, but a single chip upgrade would make sense.

    Most non-Apple dual processor motherboards will run with only a single CPU. I'm curious is anyone has tried this with a Mac Pro.

    Thanks.
     
  2. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #2
    I think it may run with one CPU, but I don't know if that CPU will fit in the socket ...
     
  3. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #3
    I remember talk of this ages ago and yes you can run it on a single LGA771 processor.

    I can't confirm my memory of this though.
     
  4. bozz2006 macrumors 68030

    bozz2006

    Joined:
    Aug 24, 2007
    Location:
    Minnesota
    #4
    the only chips that are compatible with the mac pro classic are 51XX and 53XX. Woodcrest and Clovertown, I think.
     
  5. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #5
    This is correct. You can't use 45 nm Penryn derived Xeons in the Mac Pro 2006.
     

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