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Processor Revision

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  • Processor Revision

    We have a server (a cluster member) which often has STOP 7F/08 errors, and I got the honour of investigating. It turns out that two of it's processors are "Stepping 4" and two are "Stepping 7" - and a warning in the Event Log specifies that this will cause instability.

    Is the "Stepping" number upgradeable in Software (a hot-flash or something) or will I need to have the processors at Stepping 4 replaced?

    Thanks in advance.

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  • #2
    Re: Processor Revision

    AFAIK stepping refers to the actual design of the chip.
    The first version of a new microprocessor product is the A-0 core step. Later, as improvements are made to the product for functional fixes or manufacturing improvements, the core stepping number is incremented. Generally speaking, minor changes result in an increased number (i.e. A-3 to A-4), while more complex changes result in the letter being changed (i.e. A-3 to B-0). Note that a B-0 core stepping is more recent than an A-4 core stepping.

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    • #3
      Re: Processor Revision

      JeremyW is correct. Hate to say it but if all don't match, you can get obscure problems. Not saying your stop issue is related to stepping but you may want to try pulling 2 CPU's and running w/ 2 at the same stepping to confirm that is the issue.


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