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Thread: strange multiplier on my new i7 920

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    strange multiplier on my new i7 920

    Hi everyone,

    I just got myself a new rig spurred on with a recent deal from scan where I got the Gigabyte x58a-ud3r, 6gb of corsair ram and an i7 920 cpu.

    I also got myself an asus 5870. Now I started up CPUZ and GPUZ just to check and if you look my multiplier on my processor is all out of wack. Any idea why this is and how to correct it? I am running a fresh install of win 7 prof x64



    Thanks

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    Senior Member kalniel's Avatar
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    Re: strange multiplier on my new i7 920

    Bus speed is 133 and idle multiplier is 12, giving ~1600mhz. What's the problem exactly?

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    Re: strange multiplier on my new i7 920

    Speedstep is enabled which means when the processor is idle it'll be on a lower multiplier. Run some load on the pc and it'll go to 20x multiplier for 2.66ghz or if turbo is enabled then it'll go to 21x multiplier and 2.80ghz.

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    Re: strange multiplier on my new i7 920

    Quote Originally Posted by Ulti View Post
    Speedstep is enabled which means when the processor is idle it'll be on a lower multiplier. Run some load on the pc and it'll go to 20x multiplier for 2.66ghz or if turbo is enabled then it'll go to 21x multiplier and 2.80ghz.
    Beaten to it lol

    Disable Speedstep and it all should be fine...

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    Re: strange multiplier on my new i7 920

    Ahh I understand now.

    Realistically is there anything wrong with speedstep, it must make it more energy efficient? Also is turbo mode enabled within the bios or is it automatic on the i7 920 D0?

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    Re: strange multiplier on my new i7 920

    Nothing wrong with it, sometimes it messes with overclocking so you'd want to turn it off for testing overclocks then turn it back on to save energy, produce less heat etc once you've found a good setting or if you're running stock then you should leave it on. As soon as there's any load on the CPU it'll "speed back up" so yeah.

    Turbo mode is usually enabled by default and is always changed within the BIOS.

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    Senior Member watercooled's Avatar
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    Re: strange multiplier on my new i7 920

    +1 to what Ulti said, just leave it on it saves a fair amount of power. Load the CPU somehow while in CPU-Z and you'll see it go to full clock speed, or slightly higher because of Turbo Boost which sort of overclocks cores if you're not using them all to give better single-threaded performance, for example.

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