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any problem running 300MHz UltraSparc-II at 320MHz?

Discussion in 'Sun Hardware' started by Juhan Leemet, Jun 25, 2004.

  1. Juhan Leemet

    Juhan Leemet Guest

    I've got a couple of those weird Tadpole CycleQUADs. They want to run the
    nominally 300MHz UltraSparc-II CPUs (with 2MB cache) at 320MHz instead of
    the 296MHz that I normally see in my Sun Ultra2 chassis. I'm not sure why
    this happens, but it must be something to do with the way UPA and/or CPU
    clock frequencies are generated by mobo and/or CPU module. Does anyone
    know if it is dangerous to run those 300MHz CPUs "overclocked" by 6%?
    Doesn't seem that extreme, and I don't think the 300MHz CPUs are that
    stressed (they don't have the "smokestacks" like the 450MHz CPUs!)?

    p.s. Is the weird clocking why my 450MHz CPU doesn't want to work? It
    seems to stop in mid-sentence when trying to (re)load some PLL clock?
     
    Juhan Leemet, Jun 25, 2004
    #1
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