Does a GPU take power from the PSU when overclocking?

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Oxicoi

Oxicoi

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Feb 7, 2017
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I have a GTX 970 4GB and for my overclocks to apply, I have to apply more voltage. My question is, does the GTX 970 or any GPU pull power from the motherboard or the GPU? To help better simple this, I have 2 4-pins in my GTX 970.
 
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Some power phases on the card are powered by the motherboard connector and some from the PCI-E connectors (one 6-pin and one 8-pin I think for the GTX 970, although this can vary between models as well).
Overclocking will draw more power on all phases I expect, so more from both the motherboard connector and the PCI-E power connectors.
Hopefully the manufacturer has designed the card to not exceed the limits on the slot, but reviews show that even some of the reference cards can exceed this.
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Dugimodo

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Sep 22, 2011
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It will draw some power through the motherboard and some through the 4/6 pin connectors. It should limit the draw through the motherboard to safe limits in theory but I can't guarantee it. All the power comes from the PSU ultimately though, just some of it passes through the motherboard on the way.
 
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VincentP

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Oct 18, 2013
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Some power phases on the card are powered by the motherboard connector and some from the PCI-E connectors (one 6-pin and one 8-pin I think for the GTX 970, although this can vary between models as well).
Overclocking will draw more power on all phases I expect, so more from both the motherboard connector and the PCI-E power connectors.
Hopefully the manufacturer has designed the card to not exceed the limits on the slot, but reviews show that even some of the reference cards can exceed this.
 
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