Prime95 not using full processor speed on i5 2500k? Extreme3 gen3 owners help!

Discussion in 'CPUs and Overclocking' started by Papa Hogan, Jan 23, 2013.

  1. Papa Hogan

    Papa Hogan Senior member

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    Motherboard: Asrock extreme 3 gen 3

    I'm really having trouble figuring out why the stress tests that I'm trying to do aren't using the full 4.8 ghz. It maxes out at 3.7 ghz even though the multiplier is set at 48x. Is something disabled in bios or what?

    Please heeeeeeelp!

    I just disabled "enhanced halt state c1e" and "cpu c3 state support" as well as "cpu c6 state support". Still it pegs at 3.7 ghz or so. I'm using cpu-z and Intel turbo boost technology monitor to check speed. Should I update the bios? I read that it might help.
     
    #1 Papa Hogan, Jan 23, 2013
    Last edited: Jan 23, 2013
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  3. ShintaiDK

    ShintaiDK Lifer

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  4. computerbuildin

    computerbuildin Senior member

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    Oh, look at that. Yeah do what this guy says ^ :p If you can find the settings for the same wattage settings in my thread try to up those a little bit.
     
  5. MadScientist

    MadScientist Platinum Member

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    #4 MadScientist, Jan 23, 2013
    Last edited: Jan 23, 2013
  6. Papa Hogan

    Papa Hogan Senior member

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    Ok. So when I play battlefield 3, the speed monitors show 4.8ghz. Interesting...
    I downclocked to 4ghz and changed the settings back that you told me to.

    Here are the bios settings that seem related to processor voltage:

    internal pll voltage: disabled
    speedstep: enabled
    turbo boost power limit: auto
    additional turbo voltage: +.102v (won't boot to windows without the boost)
    core current limit: 150 (default)
    cpu core voltage: 1.336v offset mode +.05v
    cpu load line calibration: auto (level 5)
    pch voltage: auto (1.059v)
    cpu pll voltage: auto (1.832v)
    vtt voltage: auto (1.047v)
    vccsa voltage: auto (.925v)
    cpu thermal throttling: disabled

    Which ones should I leave and what should I change? Also, are any of these voltages too high? The last thing I need is a burned up processor.

    Thanks, guys, for your help :biggrin:
     
  7. Vectronic

    Vectronic Senior member

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    internal pll voltage: disabled
    speedstep: enabled
    turbo boost power limit: auto
    additional turbo voltage: +.102v Seriously?
    core current limit: 150 (default) I dunno what you are doing, set to to Auto/Max
    cpu core voltage: 1.336v offset mode +.05v Raise this by that 0.102v (+0.155) from Turbo boost, set Turbo Boost to +0.004
    cpu load line calibration: auto (level 5) Depends on the board, depends on offset, could be changed, *may* help.
    pch voltage: auto (1.059v)
    cpu pll voltage: auto (1.832v) Could be lowered, fine where it is.
    vtt voltage: auto (1.047v)
    vccsa voltage: auto (.925v)
    cpu thermal throttling: disabled Don't disable that,, unless you have some really weird glitch with your motherboard.

    You probably won't be able to duplicate these settings exactly on your board, but here is an example of my settings:[​IMG]

    Other than multiplier and offset, those work anywhere from 1.6GHz to 4.8GHz. (Z77 Ext4, 3570K)
     
    #6 Vectronic, Jan 23, 2013
    Last edited: Jan 23, 2013