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    Questions about M11X R2 CPU overclocking

    Discussion in 'Alienware M11x' started by kidio007, May 11, 2011.

  1. kidio007

    kidio007 Notebook Consultant

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    Hi!

    I have a m11X R2 i5 and it is overclocked in the bios to about 2.2ghz with turbo boost on. When I launch prime 95 the temperatures don't really go up that much and in RealTemp it says 100% load 1.2Ghz? I turned on Throttlestop and then it said 100% load 1.8ghz. Shouldn't it be 2.2Ghz at all times? So in games like GTA 4 i notice an huge difference between Throttlestop off and on. I can play gta 4 on medium with it off and high when it is on. Is there any way to test if my prosessor is working alright? I did a 32M test in throttlestop and got 60 seconds when I overclocked to 2.2ghz, is that normal?
     
    kidio007, May 11, 2011
    #1
  2. unclewebb

    unclewebb ThrottleStop Author

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    On the Core i5-520UM, the maximum turbo multiplier when both cores are active is 12.0. If you don't run ThrottleStop when your CPU is fully loaded with Prime95, you might not get any turbo boost so you will only be running at the default multiplier which I think is 8.0 for your CPU.

    8.0 x 150.0 MHz = 1.20 GHz
    12.0 x 150.0 MHz = 1.80 GHz

    That's why running ThrottleStop on a UM processor is a good thing. It can boost your full load performance by 50% or greater on some of these CPUs.

    Without overclocking some more in the bios, 1.80 GHz is as high as you can go when both cores are active. It sounds like your CPU is working correctly. The 14.0 multiplier is only available when a single core is in the active state. When running a single threaded app, you might see the average multiplier bounce around between 12.0 and 14.0 but in ThrottleStop you will never see the full 14 multiplier for any length of time because there are hundreds of background threads running in Windows that constantly wake up the second CPU and reduce the maximum multiplier back to 12.0.

    Try reading some of the Supercharge thread for some more examples.

    http://forum.notebookreview.com/alienware-m11x/524257-how-supercharge-m11x-core-i5-i7-um-cpus.html
     
    unclewebb, May 11, 2011
    #2