Mac Pro 2009 CPU upgrade: W or X

Discussion in 'Mac Pro' started by ShawnF, Aug 22, 2014.

  1. ShawnF macrumors regular

    Joined:
    May 10, 2014
    #1
    Hi all

    Just a simple question. I have a Mac Pro 2009 2.66GHZ Quad. I plan to upgrade to a hexacore and I have flashed the desktop to 5.1 in preparation for the purchase. I was planning to get the Xeon W3680 But now I am seeing multiple threads about how the W Xeons like the W3680 and W3690 can only run with RAM in 3 banks instead of 4.

    I am using my system primarily for Final Cut Pro X and Lightroom. And I have all 4 RAM banks filled (20GB - 8+8+2+2) with ECC RAM running at 1066MHz. I'd like to keep it this way.

    So quick and straight answer - which hexacore CPU should I go for?

    Thanks!
     
  2. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #2
    Unless you need anything more than 56G of RAM, otherwise, the W36xx will be fine. You can install 3x16 + 1x8 (total 56G RAM) with the W36xx. However, if you need 4x16G (total 64G RAM), then only the X56xx can do.
     
  3. ShawnF thread starter macrumors regular

    Joined:
    May 10, 2014
    #3
    Thanks! Good to know. Is that the only advantage of the X56xx Xeon CPUs? Any other advantage of the W Xeon variants?

    Also 3.33GHz is W3680 for the W series. Which X56xx CPU has a similar clock speed and is compatible on a 5.1 flashed Mac Pro?
     
  4. ShawnF thread starter macrumors regular

    Joined:
    May 10, 2014
    #4
  5. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #5
    X5680 has the same speed as the W3680.

    X5675 can run in single CPU config.
     
  6. ShawnF thread starter macrumors regular

    Joined:
    May 10, 2014
    #6
    Ah! Thanks!
     

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