How to identify engineering sample CPUs

Discussion in 'Mac Pro' started by flehman, Mar 25, 2015.

  1. flehman macrumors regular

    flehman

    Joined:
    Feb 21, 2015
    #1
    I have read in various threads to watch out for engineering samples of CPUs because they may draw more power, generate more heat, and/or perform less reliably. Can anyone advise as to markings or abbreviations that I should look for on a CPU that would identify it as an engineering sample so that I can avoid them?

    To be specific, I am looking at a X5690 or W3690 for a single-processor Mac Pro 5,1.

    Also, is there any qualitative difference between the X and the W processor other than support for dual CPU functionality? Nearly everything I have read so far indicates they are equal, but I ran across one benchmark someplace that suggested the W3690 might have been a little faster and that gave me pause.
     
  2. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #2
  3. Pressure macrumors 68040

    Pressure

    Joined:
    May 30, 2006
    Location:
    Denmark
    #3
    For starters it says so on the chip markings.

    That would be a very strong indicator ;)
     
  4. flehman thread starter macrumors regular

    flehman

    Joined:
    Feb 21, 2015
    #4
    Well OK then - I had no idea that the engineering sample markings were THAT obvious. I guess I don't have much to worry about. Thank you!
     

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