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Thread: TDP nVidia GeForce GTX 670

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    Default TDP nVidia GeForce GTX 670

    Hi

    Please help me understand TDP.

    Thermal design power....right? Wikipedia says it refers to the maximum amount of power the cooling system in a computer is required to dissipate.

    For the GTX 670 it is 170W. Does this mean that under full / maximum load the most power it will use is 170W?

    Using GPU-Z idle TDP% is 9.5% and even during Dishonored the maximum it reached was 35%. Does this mean the card is not under full load and is it only using 35% of 170W?

    Max readings during Dishonored:
    TDP% = 35%
    GPU load = 92%
    Temp = 48C
    Fan speed = 32% / 1290RPM

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    Default Re: TDP nVidia GeForce GTX 670

    Quote Originally Posted by petrivanzyl View Post
    Hi

    Please help me understand TDP.

    Thermal design power....right? Wikipedia says it refers to the maximum amount of power the cooling system in a computer is required to dissipate.

    For the GTX 670 it is 170W. Does this mean that under full / maximum load the most power it will use is 170W?

    Using GPU-Z idle TDP% is 9.5% and even during Dishonored the maximum it reached was 35%. Does this mean the card is not under full load and is it only using 35% of 170W?

    Max readings during Dishonored:
    TDP% = 35%
    GPU load = 92%
    Temp = 48C
    Fan speed = 32% / 1290RPM
    Yes

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    Default Re: TDP nVidia GeForce GTX 670

    that very much. i need just a power suply about 450 W. with this score i have to pay less for my very good graphic card.

    How is with other people here in pure oc. what power suply do you have. i know more facts. for a geforce 580 is the min. 600W

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    Default Re: TDP nVidia GeForce GTX 670

    Quote Originally Posted by petrivanzyl View Post
    Hi

    Please help me understand TDP.

    Thermal design power....right? Wikipedia says it refers to the maximum amount of power the cooling system in a computer is required to dissipate.

    For the GTX 670 it is 170W. Does this mean that under full / maximum load the most power it will use is 170W?

    Using GPU-Z idle TDP% is 9.5% and even during Dishonored the maximum it reached was 35%. Does this mean the card is not under full load and is it only using 35% of 170W?

    Max readings during Dishonored:
    TDP% = 35%
    GPU load = 92%
    Temp = 48C
    Fan speed = 32% / 1290RPM
    So, if you got those readings from a monitoring software, you can almost disregard them entirely. Typically, you need some kind of external Wattage measuring device to know actual TDP. The thing about GTX products though is they are really good at staying at or under the rated TDPs. Usually overclocking is the only thing that takes it higher.

    I doubt Dishonored will tax your GPU too hard so those settings seem normal. The thing about those readings is that it's not the GPU load alone that determines TDP, since the memory load will also contribute to it, the VRMs, Fans to a minor extent, etc.

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