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    Can't get to 166MHz FSB on m11xR2

    Discussion in 'Alienware M11x' started by oewolf, Feb 8, 2011.

  1. oewolf

    oewolf Newbie

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    Hi guys,

    I bought a m11xR2 5 months ago, but it was until now that I'm reading about the FSB OC possibilities.

    The problem is, if I crank it up to 166MHz, after saving and exiting, my machine will power off for a brief time then restart and if I go into the BIOS it will show the OC == disabled!

    I tried with 164 and 162, no good, it would just reset back to disabled. Then I tried 160 and that value wasn't reseted, but I get a BSOD in Win7.

    Do you know what am I doing wrong?
     
    oewolf, Feb 8, 2011
    #1
  2. slickie88

    slickie88 Master of Puppets

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    You're not doing anything wrong. You simply need to keep lowering and testing until you find what setting your particular CPU will be stable at. Every CPU is going to be different.
     
    slickie88, Feb 8, 2011
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  3. oewolf

    oewolf Newbie

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    Oh, for a moment I thought it might be broken, heh, glad there is a sane explanation for it. :)

    Anyone here with a good FSB value for a Core i7 U640? (that's my m11xR2 CPU model)
     
    oewolf, Feb 8, 2011
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  4. slickie88

    slickie88 Master of Puppets

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    You're going to need to see what your CPU is stable at. Drop it to 158 and stress the knickers off it. If it BSODs, resets the fsb or locks up then drop it again. Rinse and repeat until you're stable.
     
    slickie88, Feb 8, 2011
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  5. oewolf

    oewolf Newbie

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    oewolf, Feb 8, 2011
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  6. slickie88

    slickie88 Master of Puppets

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    Get a stable OC first. Leave it that way for a few days. Game, run Prime95 for hours on end, be sure that you're stable. Then start enjoying ThrottleStop for games and other CPU intensive applications.
     
    slickie88, Feb 8, 2011
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  7. oewolf

    oewolf Newbie

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    Will do, thank you very much! :)
     
    oewolf, Feb 8, 2011
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  8. darkdomino

    darkdomino Notebook Deity

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    I must be lucky, my laptop runs perfectly with 166 mhz (but gets very hot) and I've had no problems.

    however...

    if I install the 266.58 drivers, and then try to overclock to 166 mhz... windows 7 won't even boot. It'll bluescreen at startup until you set the speed back to normal in the BIOS.
     
    darkdomino, Feb 8, 2011
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  9. tonkatrain

    tonkatrain Notebook Consultant

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    Without throttlestop the cpu will not hit it's max turbo frequency when you run prime95 on it. I would reccomend also testing with prime when you have throttlestop setup and idealy let it run overnight to see if it has any errors.
     
    tonkatrain, Feb 8, 2011
    #9