Kayak XA-s Upgrade

Discussion in 'HP' started by Rainer Krey, Nov 12, 2003.

  1. Rainer Krey

    Rainer Krey Guest

    I recently bought a cheap Kayak XA-s with a single PII/300MHz CPU. Now I'm
    wondering how far I can upgrade the cpu. Can the mainboard use cpus with
    more than 500 MHz? And is the VRM installed on the board suitable for other
    processors (e.g. a P3/500 Katmai) or do I need to replace the installed VRM?
    Is there anything special about upgrading to a second cpu? The hp service
    manual says that the 2nd cpu needs to be of same type, with same cache and
    speed as the 1st - is this enough or is there a need to install two exactly
    identical cpus?

    Thanks in advance for your answers

    Rainer Krey
    Rainer Krey, Nov 12, 2003
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  2. The max listed in the pdf-manual is 450MHz,
    but partsurfer has a 600MHz Model as well (D7992N)
    Check your VRM, the PII Klamath CPUs (233-333) use 2.8V like the PPro,
    (This can be done by any VRM)
    the later Deschutes and Katmai need less Voltage, but more current.
    This means you will need a VRM according to intel 8.2 specs.
    (search google for intel_vrm_spec-8.2.pdf)
    Looking for two of these myself and they seem to be hard to find.
    Check http://partsurfer.hp.com for 0950-2837
    Its the origianal HP part #for the Delta 05S2020A
    Best is to use two CPUs of exact same hardware revision,
    but usually it works with same type and model.

    Gereon Wenzel, Nov 13, 2003
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  3. Rainer Krey

    Ben Myers Guest

    Intel recommends matched steppings for multi-processor configurations: "same
    frequency speed, cache size, and runs the same system bus speed." Processors
    having different steppings can have minor timing variations in microcode,
    leading to system lockups and other hard-to-diagnose failures.

    Quoted from the Intel web site...

    "How to Match Processor Steppings

    The easiest way to match steppings is to compare the 5-character test
    specification numbers on the top of Pentium II Xeon processors. The number
    starts with an "S" and is followed by 4 characters (for example, "SL2RH"). "

    .... Ben Myers
    Ben Myers, Nov 13, 2003
  4. Rainer Krey

    Ben Myers Guest

    The Intel test specification number is often called the sSpec.

    Altho the quoted reference talks about Xeon processors, Intel uses the sSpec
    across all of its processors, beginning a long time ago with the Socket 5
    Pentium processors... Ben Myers
    Ben Myers, Nov 13, 2003
  5. Rainer Krey

    Rainer Krey Guest

    The 950-2837 is exactly the VRM that is currently installed. So I need only
    one more VRM. I'll have a look at ebay (Yesterday there were 7 suitable
    modules, but they are all gone now...)

    Thank You for your Answer

    Rainer Krey, Nov 13, 2003
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