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Under volt CPU from bios on EVGA Z68 SLi motherboard?

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kram36
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2018/08/24 17:58:01 (permalink)
I've been trying everything, but I can not figure out how to under volt the CPU Vcore from the bios. When I try to set the voltage lower then what it shows as auto, it tells me the value is invalid. I can set the memory voltage lower just fine, but not the CPU. Auto voltage is much higher then it needs to be.
 
I have EleetTune and can lower the CPU voltage from the desktop, but I would rather set it and forget it in the bios instead of having to use EleetTune every time I boot or reboot the system.
 
I'm using a i5-3470T CPU.
 
Thanks!
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    kram36
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    Re: Under volt CPU from bios on EVGA Z68 SLi motherboard? 2018/08/24 19:45:16 (permalink)
    Forgot to say. I can raise the CPU voltage just fine. Then when I press the - key and the voltage starts to go down, but soon as it hits the same voltage showing as auto voltage, the voltage stops going down and it changes from the voltage number to auto. I can't figure out how to under volt the CPU.
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    bob16314
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    Re: Under volt CPU from bios on EVGA Z68 SLi motherboard? 2018/08/24 20:11:42 (permalink)
    Set CPU Vcore Control to [Manual]..Use your keyboard to type in the CPU Vcore (mV) value..That don't work, huh?
     
    Make sure you have the latest BIOS (R22) from the EVGA Download Center installed for your mobo too..There's been lots of bug fixes and enhancements.
     
    If you have VDroop set to [Without VDroop], that will make the VCore increase under load.

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    kram36
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    Re: Under volt CPU from bios on EVGA Z68 SLi motherboard? 2018/08/24 20:53:52 (permalink)
    bob16314
    Set CPU Vcore Control to [Manual]..Use your keyboard to type in the CPU Vcore (mV) value..That don't work, huh?

    Make sure you have the latest BIOS (R22) from the EVGA Download Center installed for your mobo too..There's been lots of bug fixes and enhancements.

    If you have VDroop set to [Without VDroop], that will make the VCore increase under load.

    There is no option to set the voltage to manual. Only option is to move to the VCore voltage line and adjust the voltage where I can type in the voltage I want. Problem is when I select a voltage lower then the already displayed auto voltage, it tells me that the value is invalid. I can type in a voltage higher then the displayed auto voltage and it will except the voltage. I can then use the - key to lower the voltage, but soon as the voltage hits the same voltage as the displayed auto voltage, the numbers go away and changes back to auto, it won't go lower.
     
    While on the voltage line, the information area in the bios says I can go as low as 0.900V and as high as 2.200V since my pcb is 1.1, but it will not let me enter a voltage lower then what the displayed auto voltage says, which is 1.142V. I have stress tested at the desktop using EleetTuner setting the voltage to 1.000 volts, which makes a big difference in the CPU temperature and the system is rock solid.
     
    I have bios R22 installed.
     

    post edited by kram36 - 2018/08/24 21:06:49
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